Apiaceae GH: 00424340 Perideridia pringlei (J. M. Coulter & Rose) A. Nelson & J. F. Macbride USA: California North slope of Liebre Mts. along road to Col... F. W. Peirson 1922-6-3
Asteraceae GH: 00386962 Baccharis emoryi A. Gray USA: California roadside at Clearwater F. W. Peirson 5228 1924-10-19
GH: 00386962 Baccharis salicina Torrey & A. Gray USA: California roadside at Clearwater F. W. Peirson 5228 1924-10-19
GH: 00386566 Brickellia microphylla (Nuttall) A. Gray USA: California Head of Eaton Canyon F. W. Peirson 2599 1921-10-22
GH: 00386573 Brickellia microphylla (Nuttall) A. Gray USA: California Lytle Creek Canyon, San Bernardino Mts. F. W. Peirson 2279 1920-9-15
GH: 02216428 Chrysothamnus vaseyi (A. Gray) Greene USA: Colorado 15 miles southwest of Walden F. W. Peirson 12592 1938-8-19
GH: 00417892 Hazardia squarrosa grindelioides (de Candolle) W. D. Clark USA: California Los Angeles: Sister Elsie Peak, San Gabriel ... F. W. Peirson 1918-9-15
GH: 00404058 Heterotheca oregona rudis (Greene) J. C. Semple USA: California Stephens Grove State Park F. W. Peirson 13111 1941-7-29
GH: 00443060 Malacothrix similis W. S. Davis & P. H. Raven USA: California Hueneme F. W. Peirson 5772 1925-5-19
Boraginaceae GH: 00424871 Cryptantha glomeriflora Greene USA: California Rock Creek Lake Basin, near Heart Lake Meado... F. W. Peirson 1935-7-16
GH: 00424872 Cryptantha glomeriflora Greene USA: California Rock Creek Lake Basin, about Heart Lake Mead... F. W. Peirson 1934-7-29
GH: 00404007 Cryptantha humilis (Greene) Payson USA: California Virginia Lakes Basin, on low Artemesia hills... F. W. Peirson 11184 1934-7-11
GH: 00404012 Cryptantha humilis (Greene) Payson USA: California Summit region south of Ebbets Pass F. W. Peirson 11599 1935-7-27
GH: 00404013 Cryptantha humilis (Greene) Payson USA: California Green Lake Valley, Bishop Creek Region F. W. Peirson 8508 1929-7-20
GH: 00404014 Cryptantha humilis (Greene) Payson USA: California Rock Creek Lake Basin, glacial ridge east of... F. W. Peirson 9153 1930-8-9
GH: 00404007 Oreocarya humilis (A. Gray) Greene USA: California Virginia Lakes Basin, on low Artemesia hills... F. W. Peirson 11184 1934-7-11
GH: 00404012 Oreocarya humilis (A. Gray) Greene USA: California Summit region south of Ebbets Pass F. W. Peirson 11599 1935-7-27
GH: 00404013 Oreocarya humilis (A. Gray) Greene USA: California Green Lake Valley, Bishop Creek Region F. W. Peirson 8508 1929-7-20
GH: 00404014 Oreocarya nubigena Greene USA: California Rock Creek Lake Basin, glacial ridge east of... F. W. Peirson 9153 1930-8-9
GH: 00420237 Tiquilia canescens pulchella (I. M. Johnston) A. T. Richardson USA: California 4-S Pass eastern Imperial Co. F. W. Peirson 1935-4-16
Brassicaceae GH: 00378812 Arabis lyallii Watson USA: California east side Ruby stream below Ruby Lake, Rock ... F. W. Peirson 12973 1940-8-2
GH: 00378821 Arabis parishii S. Watson USA: California Sugarloaf, San Bernardino Mts. F. W. Peirson 3101 1922-6-23
GH: 00932894 Boechera inyoensis (Rollins) Al-Shehbaz USA: California Rock Creek Lake Basin F. W. Peirson 12974 1940-8-1
GH: 00378812 Boechera lyallii (S. Watson) Dorn USA: California east side Ruby stream below Ruby Lake, Rock ... F. W. Peirson 12973 1940-8-2
GH: 00378821 Boechera parishii (S. Watson) Al-Shehbaz USA: California Sugarloaf, San Bernardino Mts. F. W. Peirson 3101 1922-6-23
GH: 00944421 Boechera sp. USA: California [data not captured] F. W. Peirson 12597 1940-8-6
GH: 00019258 Lesquerella bernardina Munz USA: California on north bank, east end of Bear Lake, San Be... F. W. Peirson 4600 1924-5-16
GH: 00019258 Lesquerella kingii bernardina (Munz) Munz USA: California on north bank, east end of Bear Lake, San Be... F. W. Peirson 4600 1924-5-16
GH: 00019258 Physaria kingii bernardina (Munz) O'Kane & Al-Shehbaz USA: California on north bank, east end of Bear Lake, San Be... F. W. Peirson 4600 1924-5-16
Campanulaceae GH: 00033217 Githopsis diffusa diffusa USA: Forks of San Gabriel River F. W. Peirson 5780 1925-4-23
GH: 00033217 Githopsis gilioides Ewan USA: Forks of San Gabriel River F. W. Peirson 5780 1925-4-23
Cyperaceae GH: 02316991 Carex brevipes W. Boott ex B. D. Jackson USA: California [data not captured] F. W. Peirson 11721 1935-7-29
GH: 02316991 Carex deflexa boottii L. H. Bailey USA: California [data not captured] F. W. Peirson 11721 1935-7-29
GH: 00268312 Carex fracta Mackenzie USA: California Hermit Valley, 7800 ft. F. W. Peirson 11713 1935-7-26
GH: 02370329 Carex hoodii Boott USA: California [data not captured] F. W. Peirson 11710 1935-7-24
GH: 01774376 Carex rostrata Stokes USA: California [data not captured] F. W. Peirson 11718 1935-7-28
GH: 00268312 Carex specifica L. H. Bailey USA: California Hermit Valley, 7800 ft. F. W. Peirson 11713 1935-7-26
GH: 00424181 Scirpus clementis M. E. Jones USA: California Rocky Creek Lake Basin, Shores of Chickenfoo... F. W. Peirson 1937-8-3
GH: 00424186 Scirpus clementis M. E. Jones USA: California Heart Lake Meadow, Rock Creek Lake Basin F. W. Peirson 11300 1934-7-27
Fabaceae GH: 01963923 Acmispon procumbens (Greene) Brouillet USA: California South Fork of Seymour Creek, Mount Pinos reg... F. W. Peirson 1923-6-11
GH: 01963938 Acmispon procumbens (Greene) Brouillet USA: California Pinon Ridge, Rock Creek, San Gabriel Mountai... F. W. Peirson 1919-6-15
GH: 01963975 Acmispon rigidus (Bentham) Brouillet USA: California Andreas Canyon F. W. Peirson 1922-4-9
GH: 01967237 Acmispon wrightii (A. Gray) Brouillet USA: Arizona Two miles west of Williams F. W. Peirson 12482 1938-8-3
GH: 02343327 Trifolium longipes atrorubens (Greene) J. M. Gillett USA: California [data not captured] F. W. Peirson 563 1924-7-5
Gentianaceae GH: 00402410 Eustoma exaltatum (Linnaeus) Grisebach USA: California 1000-Palm Canyon F. W. Peirson 5419 1924-12-30
Onagraceae GH: 00367623 Camissonia cheiranthifolia suffruticosa (S. Watson) Raven USA: California 5 miles south of Laguna F. W. Peirson 4670 1925-5-2
GH: 00367767 Epilobium canum (Greene) P. H. Raven USA: California West Fork San Gabriel River F. W. Peirson 280 1918-10-21
GH: 00367769 Epilobium canum (Greene) P. H. Raven USA: California Foot of Echo Mt. trail. San Gabriel Mts. F. W. Peirson 279 1918-10-15
Orchidaceae AMES: 00082682 Habenaria leuccostachys virida Jepson USA: California San Antonio Cañon, San Gabriel Mountains F. W. Peirson 12
Orobanchaceae GH: 02081437 Orthocarpus purpureo-albus A. Gray ex S. Watson USA: Colorado Laplata Mountains, 24 miles west of Durango,... F. W. Peirson 12503 1938-8-8
Plantaginaceae GH: 01046060 Antirrhinum coulterianum Bentham USA: California Foothills east of Rubio Canon F. W. Peirson 188
GH: 02122579 Penstemon speciosus Douglas USA: California [data not captured] F. W. Peirson 3193 1922
Polygonaceae A: 00364338 Eriogonum microthecum alpinum Reveal USA: California Sonora Pass region F. W. Peirson 11647 1935-8-4
GH: 01966960 Eriogonum thomasii Torrey USA: California [data not captured] F. W. Peirson 7171 1927-4-12
Rhamnaceae GH: 00349645 Ceanothus integerrimus Hooker & Arnott USA: California Toll Road, Mt. Wilson, San Gabriel Range F. W. Peirson 111 1918-5-26
GH: 00349659 Ceanothus integerrimus Hooker & Arnott USA: California Tujunga Canyon, San Gabriel Mts. F. W. Peirson 2138 1920-5-16
GH: 00349859 Ceanothus oliganthus Nuttall USA: California Toll Road, Mt. Wilson F. W. Peirson 113 1918-7-30
GH: 00425043 Ceanothus papillosus Torrey & A. Gray USA: California Holy Jim Canyon, Santa Ana Mts F. W. Peirson 3492 1923-5-6
Rosaceae GH: 00345390 Adenostoma fasciculatum Hooker & Arnott USA: California Mt. Wilson Toll Road. F. W. Peirson 78 1918-6-1
GH: 00345029 Holodiscus microphyllus Rydberg USA: California Near Summit "Baldy", Mt. San Antonio. F. W. Peirson 76 1918-8-17
GH: 00345629 Horkelia cuneata puberula (Greene) Keck USA: California Borders of Eaton Canyon, about 1/4 mile belo... F. W. Peirson 362 1919-4-5
GH: 00346576 Prunus ilicifolia (Nuttall ex Hooker & Arnott) D. N. F. Dietrich USA: California Arroyo Seco, San Gabriel Mts. F. W. Peirson 83 1918-5-21
GH: 00346744 Prunus virginiana demissa (Nuttall) Torrey USA: California Rock Creek, San Gabriel Mts. F. W. Peirson 82 1918-7-17
GH: 00345961 Rosa californica Chamisso & Schlechtendal USA: California San Antonio Canyon, San Gabriel Mts. F. W. Peirson 84 1918-7-9
GH: 00346175 Rubus leucodermis Douglas ex Torrey & A. Gray USA: California South Fork Rock Creek. San Gabriel Mts. F. W. Peirson 494 1919-6-16
GH: 00346175 Rubus leucodermis bernardinus (Greene) Jepson USA: California South Fork Rock Creek. San Gabriel Mts. F. W. Peirson 494 1919-6-16
GH: 00346200 Rubus parviflorus Nuttall USA: California At crossing of Little Rock on Chilao-Islip T... F. W. Peirson 1958 1921-6-17
Rubiaceae GH: 02359252 Galium boreale Linnaeus USA: Colorado Public Camp on the Colorado River, Rocky Mou... F. W. Peirson 12544 1938-8-12
Salicaceae A: 00382989 Salix hindsiana Bentham USA: California San Antonio Cañon, San Gabriel Mts. F. W. Peirson 14 1918-7-9
A: 00382989 Salix sessilifolia leucodendroides (Rowlee) C. K. Schneider USA: California San Antonio Cañon, San Gabriel Mts. F. W. Peirson 14 1918-7-9
Saxifragaceae GH: 00363701 Boykinia elata (Nuttall) Greene USA: California Redwood Creek, at Notreys Landing F. W. Peirson 1923-6-27
GH: 00363701 Boykinia occidentalis Torrey & A. Gray USA: California Redwood Creek, at Notreys Landing F. W. Peirson 1923-6-27
GH: 00363354 Heuchera elegans Abrams USA: California Ontario Ridge, near Ontario Peak F. W. Peirson 68 1918-7-7
