Amaranthaceae GH: 01928943 Amaranthus caudatus Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 2087 1940-9-3
ECON: 01929073 Amaranthus hybridus Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 14480 1939-9-23
GH: 01929167 Amaranthus hypochondriacus Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 2354 1941-8-11
GH: 01929168 Amaranthus hypochondriacus Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 2355 1941-8-11
Anacardiaceae ECON: 01869733 Dodonaea viscosa Jacquin USA: Maryland Greenhouse of the U. S. Plant Introd. Garden... W. H. Cowgill 822 1938-7-1
Aristolochiaceae ECON: 01681631 Aristolochia elegans Masters USA: Maryland [data not captured] W. H. Cowgill 1713 1939-9-9
Asteraceae GH: 02172028 Arctotis fastuosa Jacquin USA: Maryland [data not captured] W. H. Cowgill 890 1938-7-18
ECON: 00988266 Artemisia glauca Pallas ex Willdenow USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1542 1939-6-24
GH: 02217904 Aster tataricus Linnaeus f. USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 954 1938-8-15
GH: 02172003 Calendula gracilis de Candolle USA: Maryland [data not captured] W. H. Cowgill 2291 1941-6-18
GH: 02172335 Centaurea depressa M. Bieberstein USA: Maryland [data not captured] W. H. Cowgill 844 1938-7-6
ECON: 02172369 Centaurea jacea Linnaeus USA: Maryland [data not captured] W. H. Cowgill 1724 1939-9-25
GH: 02172409 Centaurea moschata Linnaeus USA: Maryland [data not captured] W. H. Cowgill 893 1938-8-18
ECON: 02172736 Centaurea sp. USA: Maryland [data not captured] W. H. Cowgill 1047 1938-9-8
GH: 02172734 Centaurea sp. USA: Maryland [data not captured] W. H. Cowgill 901 1938-7-26
GH: 02172733 Centaurea sp. USA: Maryland [data not captured] W. H. Cowgill 900 1938-7-26
GH: 02142214 Cichorium intybus Linnaeus USA: Maryland [data not captured] W. H. Cowgill 2367 1941-9-2
GH: 02587109 Galatella sedifolia (Linnaeus) Greuter USA: Maryland [data not captured] W. H. Cowgill 955 1938-8-15
GH: 02022263 Plectocephalus rothrockii (Greenman) D. J. N. Hind USA: Maryland [data not captured] W. H. Cowgill 912 1938-7-27
Betulaceae ECON: 02194946 Betula papyrifera Marshall USA: Maryland [data not captured] W. H. Cowgill 298 1937-8-19
Boraginaceae ECON: 01957643 Cerinthe aspera Roth USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1733 1939-9-25
ECON: 02026324 Cynoglossum wallichii G. Don USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 621 1938-5-23
ECON: 02026349 Echium plantagineum Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1734 1939-9-25
ECON: 01873182 Myosotis sylvatica Hoffmann USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 567 1938-5-4
GH: 02144290 Trigonocaryum involucratum (Steven) Medwedew USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 841 1938-7-6
GH: 02144291 Trigonocaryum involucratum (Steven) Medwedew USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 842 1938-7-6
Brassicaceae ECON: 01549569 Lepidium sativum Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 749 1938-6-14
Campanulaceae GH: 01798179 Jasione perennis (Linnaeus f.) Lamarck USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 744 1938-6-10
ECON: 01799530 Platycodon grandiflorus (Jacquin) A. de Candolle USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1718 1939-9-23
Caprifoliaceae ECON: 02040715 Leycesteria formosa Wallich USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1099 1938-9-22
ECON: 02037004 Lonicera periclymenum Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1008 1938-8-30
ECON: 02185945 Viburnum macrocephalum Fortune USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 156 1937-6-2
Caryophyllaceae ECON: 01742132 Atocion armeria (Linnaeus) Rafinesque USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 656 1938-5-27
GH: 01744334 Dianthus balbisii Seringe USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 854 1938-7-6
GH: 01744393 Dianthus pelviformis Heuffel USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1396 1939-5-23
GH: 01744394 Dianthus sp. USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 830 1938-7-1
GH: 01744507 Gypsophila sp. USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 582 1938-5-18
GH: 01715158 Petrorhagia saxifraga (Linnaeus) Link USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1088 1938-9-16
GH: 01751913 Silene chaetodonta Boissier USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 531 1938-4-6
ECON: 01752275 Silene gallica Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 633 1938-5-26
GH: 01752646 Silene latifolia alba (Miller) Greuter & Burdet USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 740 1938-6-10
GH: 01752649 Silene latifolia alba (Miller) Greuter & Burdet USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 750 1938-6-14
ECON: 01752650 Silene latifolia alba (Miller) Greuter & Burdet USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 632 1938-5-26
GH: 01624262 Velezia rigida Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1978 1940-6-14
Celastraceae ECON: 01854970 Euonymus maackii Ruprecht USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 123 1937-5-26
ECON: 01855062 Euonymus sp. USA: Maryland Plant Introduction Garden, Glenn Dale W. H. Cowgill 380 1937-11-23
Convolvulaceae ECON: 02042013 Ipomoea hederacea Jacquin USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1023 1938-9-2
ECON: 02042535 Ipomoea purpurea (Linnaeus) Roth USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1025 1938-9-2
Crassulaceae GH: 01871869 Crassula corymbulosa Link USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1126 1938-9-30
GH: 01987744 Kalanchoe ceratophylla Haworth USA: Maryland Glenn Dale W. H. Cowgill 395 1937-12-8
ECON: 01987748 Kalanchoe crenata (Andrews) Haworth USA: Maryland Plant Introduction Garden, Glenn Dale W. H. Cowgill 411 1938-1-13
ECON: 01987749 Kalanchoe crenata (Andrews) Haworth USA: Maryland Plant Introduction Garden, Glenn Dale W. H. Cowgill 393 1937-12-8
GH: 01987764 Kalanchoe fedtschenkoi Raym.-Hamet & H. Perrier USA: Maryland Plant Introduction Garden, Glenn Dale W. H. Cowgill 410 1938-1-13
GH: 01987768 Kalanchoe marmorata Baker USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1201 1938-12-20
ECON: 01987770 Kalanchoe peltata Baillon USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1251 1939-3-15
ECON: 01987783 Kalanchoe velutina Welwitsch ex Oliver USA: Maryland Plant Introduction Garden, Glenn Dale W. H. Cowgill 422 1938-1-26
ECON: 01987785 Kalanchoe waldheimii Raym.-Hamet & H. Perrier USA: Maryland Plant Introduction Garden, Glenn Dale W. H. Cowgill 451 1938-2-23
Cucurbitaceae ECON: 01544441 Melothria pendula Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1722 1939-9-23
ECON: 01544547 Momordica charantia Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1026 1938-9-2
GH: 00269874 Thladiantha dubia Bunge USA: Maryland Glenn Dale Indroduction Garden W. H. Cowgill 727 1938-6-8
Fabaceae ECON: 01935054 Amorpha fruticosa Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1109 1938-9-23
ECON: 01959524 Genista tinctoria Linnaeus USA: Maryland Glenn Dale Introduction Garden, Maryland. W. H. Cowgill 197 1937-6-17
ECON: 02148195 Indigofera gerardiana Graham ex Baker USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1714 1939-9-9
Hydrangeaceae ECON: 01750664 Deutzia crenata Siebold & Zucc. USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 589 1938-5-20
ECON: 01750672 Deutzia crenata magnifica Lemoine USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 587 1938-5-20
ECON: 01750673 Deutzia crenata magnifica Lemoine USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 678 1938-5-31
ECON: 01750674 Deutzia crenata magnifica Lemoine USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 609 1938-5-23
ECON: 01750675 Deutzia crenata magnifica Lemoine USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 614 1938-5-23
ECON: 01750665 Deutzia discolor Hemsley USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 610 1938-5-23
ECON: 01750670 Deutzia longifolia Franchet USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 602 1938-5-23
ECON: 01750671 Deutzia longifolia Franchet USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 680 1938-5-31
ECON: 01750704 Deutzia scabra Thunberg USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 605 1938-5-23
ECON: 01750707 Deutzia scabra Thunberg USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 605 1938-5-23
ECON: 01750681 Deutzia setchuenensis Franchet USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 595 1938-5-20
ECON: 01750687 Deutzia sp. USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 608 1938-5-23
ECON: 01750690 Deutzia sp. USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 593 1938-5-20
ECON: 01750693 Deutzia sp. USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 681 1938-5-31
ECON: 01750694 Deutzia sp. USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 594 1938-5-20
ECON: 01750683 Deutzia vilmorinae Lemoine & Bois ex M. Vilm. & Bois USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 591 1938-5-20
ECON: 01750684 Deutzia vilmorinae Lemoine & Bois ex M. Vilm. & Bois USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 604 1938-5-23
ECON: 01737576 Philadelphus cymosus Rehder USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 682 1938-6-1
ECON: 01992735 Philadelphus delavayi L. Henry USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 701 1938-6-1
ECON: 01737604 Philadelphus incanus Koehne USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 694 1938-5-31
ECON: 01992812 Philadelphus incanus Koehne USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 694 1938-5-31
ECON: 01738014 Philadelphus schrenkii Ruprecht USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 692 1938-5-31
ECON: 01737632 Philadelphus sp. USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 699 1938-6-1
ECON: 01738057 Philadelphus sp. USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 631 1938-5-25
ECON: 01738059 Philadelphus sp. USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 78150 1938-6-1
ECON: 01738060 Philadelphus sp. USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 687 1938-5-31
ECON: 01738061 Philadelphus sp. USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 626 1938-5-25
ECON: 01738062 Philadelphus sp. USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 684 1938-5-31
ECON: 01738063 Philadelphus sp. USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 696 1938-6-1
ECON: 01738064 Philadelphus sp. USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 630 1938-5-25
ECON: 01738053 Philadelphus virginalis Rehder USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 628 1938-5-25
Iridaceae ECON: 01700938 Gladiolus callistus Bolus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 539 1938-4-14
ECON: 01700947 Gladiolus psittacinus Hooker USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1004 1938-8-26
GH: 02517563 Gladiolus sp. USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1208 1939-1-18
ECON: 01700948 Gladiolus tristis Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 645 1938-5-26
GH: 01748295 Iris dichotoma Pallas USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 2011 1940-7-2
GH: 00962629 Iris graminea Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1912 1940-5-24
GH: 00962265 Iris kaempferi Siebold ex Lemaire USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1996 1940-6-22
GH: 00962833 Iris sibirica Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1900 1940-5-20
GH: 00962843 Iris sintenisii Janka USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1933 1940-6-4
GH: 02517715 Ixia polystachya Linnaeus South Africa: Seed presented by National Botanic Garden, K... W. H. Cowgill 556 1938-4-25
GH: 02517716 Ixia polystachya Linnaeus USA: Maryland cultivated; Glenn Dale Introduction Garden; ... W. H. Cowgill 555 1938-4-24
GH: 02517816 Melasphaerula ramosa (Linnaeus) Klatt USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 473 1938-3-9
ECON: 01749569 Sisyrinchium iridifolium Kunth USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 573 1938-5-18
ECON: 01750525 Tritonia crocosmiiflora G. Nicholson USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1010 1938-8-30
Lamiaceae ECON: 01555028 Agastache rupestris (Greene) Standley USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1046 1938-9-8
GH: 01554042 Coleus fredericii (Briquet) G. Taylor USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1219 1939-2-6
ECON: 01553689 Lallemantia peltata (Linnaeus) Fischer & C. A. Meyer USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 634 1938-5-26
ECON: 01552079 Lepechinia floribunda USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1095 1938-9-22
GH: 01551192 Melissa officinalis Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 924 1938-8-2
ECON: 01600198 Mentha pulegium Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1104 1938-9-23
ECON: 01599800 Nepeta erecta (Royle ex Bentham) Bentham USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1006 1938-8-30
GH: 01599803 Nepeta melissifolia Lamarck USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 2000 1940-6-24
GH: 01599829 Ocimum basilicum anisatum Bentham USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 2363 1941-9-2
GH: 01599833 Ocimum basilicum glabratum Bentham USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 2365 1941-9-2
GH: 01599834 Ocimum basilicum majus Bentham USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 2364 1941-9-2
GH: 01599845 Ocimum gratissimum Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1039 1938-9-2
ECON: 01599856 Ocimum micranthum Willdenow USA: Texas Brownsville: Cult. at Glenn Dale Introd, Gar... W. H. Cowgill 112676 1937-1-7
ECON: 01599857 Ocimum micranthum Willdenow USA: Maryland Glenn Dale Introd. Garden W. H. Cowgill 1937-1-7
ECON: 01696045 Salvia earlei Wooton & Standley USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1097 1938-9-22
GH: 01696803 Salvia moorcroftiana Wallich ex Bentham USA: Maryland [data not captured] W. H. Cowgill 741 1938-6-10
GH: 01696804 Salvia napifolia Jacquin USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 850 1938-7-6
GH: 01696805 Salvia sclarea Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 742 1938-6-10
GH: 01696815 Salvia sp. USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 861 1938-7-6
GH: 01696816 Salvia sp. USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 849 1930-7-6
GH: 01696808 Salvia sylvestris Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 815 1938-6-29
GH: 01696809 Salvia verticillata Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 816 1938-6-29
GH: 01696810 Salvia verticillata Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 821 1938-6-29
GH: 01697636 Satureja hortensis Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 2285 1941-6-18
Linaceae ECON: 01968923 Linum flavum Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 561 1938-5-4
ECON: 01968976 Linum gallicum Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1732 1939-9-25
Malvaceae ECON: 02202795 Hibiscus coulteri Harvey ex A. Gray USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1098 1938-9-22
ECON: 02201640 Malva aegyptia Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 661 1938-5-27
GH: 02201777 Malva neglecta Wallroth USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 2072 1940-8-12
GH: 02201888 Malva sylvestris Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1949 1940-6-8
GH: 02201887 Malva sylvestris Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 843 1938-7-6
GH: 02201675 Malva verticillata Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 807 1938-6-23
GH: 02201905 Malva verticillata Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1558 1939-7-5
ECON: 02201883 Malva verticillata Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 659 1938-5-27
GH: 02201882 Malva verticillata Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 810 1938-6-23
GH: 02201881 Malva verticillata Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 917 1938-7-29
ECON: 02200662 Sida rhombifolia Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1740 1939-9-25
Onagraceae GH: 01644226 Oenothera glazioviana Micheli USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 2319 1941-7-21
Papaveraceae GH: 01857148 Glaucium flavum Crantz USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 919 1938-8-2
GH: 01248124 Glaucium flavum Crantz USA: Maryland Glenn Dale Introduction Garden, Maryland. W. H. Cowgill 928 1938-8-8
GH: 01246537 Glaucium flavum Crantz USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 2874 1938-7-18
GH: 01857525 Papaver rhoeas Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 793 1938-6-21
GH: 01857526 Papaver rhoeas Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 789 1938-6-21
GH: 01857527 Papaver rhoeas Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 794 1938-6-21
GH: 01857529 Papaver rhoeas Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 792 1938-6-21
Phytolaccaceae ECON: 01681271 Phytolacca americana Linnaeus USA: Maryland [data not captured] W. H. Cowgill 1113 1938-9-23
ECON: 01681387 Phytolacca bogotensis Kunth USA: Maryland [data not captured] W. H. Cowgill 1110 1938-9-23
Pinaceae ECON: 00396034 Abies veitchii Lindley USA: Maryland P.I. 39987 Glenn Dale Introduction Garden W. H. Cowgill 1232 1939-2-1
ECON: 00397218 Picea maximowiczii Master USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1231 1939-2-1
ECON: 00399916 Pinus tabulaeformis Carr USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1223 1939-1-19
Plantaginaceae GH: 01999258 Digitalis lutea Linnaeus USA: Maryland [data not captured] W. H. Cowgill 104960 1938-6-1
GH: 01815477 Digitalis lutea Linnaeus USA: Maryland [data not captured] W. H. Cowgill 751 1938-6-14
ECON: 02001047 Linaria sp. USA: Maryland [data not captured] W. H. Cowgill 1102 1938-9-23
Plumbaginaceae ECON: 01927384 Plumbago europaea Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1040 1938-9-2
Polygonaceae GH: 02365078 Fagopyrum esculentum Moench USA: Maryland [data not captured] W. H. Cowgill 2415 1941-10-17
Primulaceae ECON: 01918238 Lysimachia clethroides Duby USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 283 1937-8-16
GH: 01918369 Lysimachia foemina (Miller) U. Manns & Anderberg USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 947 1938-8-12
Ranunculaceae ECON: 01709938 Aquilegia sp. USA: Maryland Bell Introduction Garden W. H. Cowgill 85 1937-5-19
ECON: 01659230 Delphinium leroyi Franchet ex Huth USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1005 1938-8-30
Rosaceae ECON: 01756224 Cotoneaster adpressus Bois USA: Maryland Glenn Dale Introd. Garden W. H. Cowgill 102 1937-5-20
ECON: 01756226 Cotoneaster adpressus Bois USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 316 1937-8-19
ECON: 01756234 Cotoneaster apiculatus Rehder & E. H. Wilson USA: Maryland Glenn Dale Introd. Garden W. H. Cowgill 91 1937-5-21
ECON: 01756246 Cotoneaster conspicuus Comber ex Marquand USA: Maryland Glenn Dale Introd. Garden W. H. Cowgill 93 1937-5-21
ECON: 01756260 Cotoneaster divaricatus Rehder & E. H. Wilson USA: Maryland Cult. at Glenn Dale Introduction Garden W. H. Cowgill 337 1938-10-9
ECON: 01756261 Cotoneaster farreri G. Klotz USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 308 1937-8-19
ECON: 01756283 Cotoneaster hebephylla Diels USA: Maryland Glenn Dale Introd. Garden W. H. Cowgill 98 1937-5-21
ECON: 01756300 Cotoneaster hupehensis Rehder & E. H. Wilson USA: Maryland [data not captured] W. H. Cowgill 162 1937-5-19
ECON: 01756310 Cotoneaster lindleyi Steudel USA: Maryland Glenn Dale Introd. Garden W. H. Cowgill 100 1937-5-20
ECON: 01756319 Cotoneaster multiflora Bunge USA: Maryland at Glenn Dale Introduction Garden W. H. Cowgill 339 1937-10-9
ECON: 01756322 Cotoneaster nitens Rehder & E. H. Wilson USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 305 1937-8-14
ECON: 01756339 Cotoneaster racemiflorus K. Koch USA: Maryland Glenn Dale Introd. Garden W. H. Cowgill 101 1937-5-21
ECON: 01756346 Cotoneaster rubens W. W. Smith USA: Maryland Glenn Dale Introd. Garden W. H. Cowgill 104 1937-5-21
ECON: 01756349 Cotoneaster salicifolius Franchet USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 158 1937-6-2
ECON: 01756352 Cotoneaster simonsii Baker USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 159 1937-6-2
ECON: 01756365 Cotoneaster tomentosus (Aiton) Lindley USA: Maryland Glenn Dale Introd. Garden W. H. Cowgill 105 1937-5-21
ECON: 01756371 Cotoneaster zabelii C. K. Schneider USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 302 1937-8-19
ECON: 01756372 Cotoneaster zabelii C. K. Schneider USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 108 1937-5-21
ECON: 01606354 Fragaria vesca Linnaeus USA: Maryland Plant Introduction Garden, Glenn Dale W. H. Cowgill 362 1937-10-14
GH: 01556257 Potentilla fulgens Wallich USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 2053 1940-7-24
GH: 01556258 Potentilla fulgens Wallich USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 2054 1940-7-24
GH: 01556259 Potentilla fulgens Wallich USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 2322 1941-7-21
ECON: 01603495 Rubus caesius Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 664 1938-5-27
ECON: 01603496 Rubus caesius Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 664 1938-5-27
ECON: 01604253 Rubus discolor Weihe & Nees USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1703 1939-9-8
ECON: 01604745 Rubus fraxinifolius Poiret USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 667 1938-5-31
ECON: 01604918 Rubus hedycarpus Focke USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 666 1938-5-31
ECON: 01604919 Rubus hedycarpus Focke USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 666 1938-5-31
ECON: 01703125 Rubus tephrodes Hance USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1704 1939-9-8
ECON: 01589906 Spiraea pubescens Turczaninow USA: Maryland Bell Introduction Garden W. H. Cowgill 57 1937-5-5
Scrophulariaceae ECON: 02040389 Verbascum sp. USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 565 1938-5-4
ECON: 02040390 Verbascum sp. USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 565 1938-5-4
GH: 02040257 Verbascum speciosum Schrader USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 737 1938-6-10
Solanaceae GH: 01541582 Physalis peruviana Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 915 1938-7-29
ECON: 01543101 Solanum americanum Miller USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1072 1938-9-14
ECON: 01542181 Solanum arcanum Peralta USA: Maryland U. S. Plant Introduction Garden, Glenn Dale W. H. Cowgill 984 1938-8-23
ECON: 01543100 Solanum arequipense Bitter USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1073. 1938-9-14
ECON: 01543028 Solanum lycopersicum Linnaeus USA: Maryland U.S. Plant Introduction Garden, Glenn Dale W. H. Cowgill 970 1938-8-19
ECON: 01543029 Solanum lycopersicum Linnaeus USA: Maryland U.S. Plant Introduction Garden, Glenn Dale W. H. Cowgill 997 1938-8-25
ECON: 01543030 Solanum lycopersicum Linnaeus USA: Maryland U. S. Plant Introduction Garden, Glenn Dale,... W. H. Cowgill 1001 1938-8-26
ECON: 01543031 Solanum lycopersicum Linnaeus USA: Maryland U. S. Plant Introduction Garden, Glenn Dale W. H. Cowgill 1059 1938-9-13
GH: 01543032 Solanum lycopersicum Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1643 1943-8-15
GH: 01543033 Solanum lycopersicum Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1686 1939-8-24
GH: 01543034 Solanum lycopersicum Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1657 1939-8-17
GH: 01543679 [None] USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1080 1938-9-15
GH: [None] USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1080 1938-9-15
Verbenaceae ECON: 01955392 Verbena officinalis Linnaeus USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 1730 1939-9-25
ECON: 01955607 Verbena rigida Sprengel USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 568 1938-5-16
Violaceae ECON: 02146262 Viola cucullata Aiton USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 535 1938-4-6
ECON: 02147832 Viola munbyana Boiss. & Reut. USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 533 1938-4-6
ECON: 02208122 Viola palmensis (Webb & Berthelot) Sauer USA: Maryland Glenn Dale Introduction Garden W. H. Cowgill 652 1938-5-26
