Brassicaceae GH: 00992618 Arabidopsis lyrata (Linnaeus) O'Kane & Al-Shehbaz USA: Michigan along Route 2, west of St. Ignace F. W. Pennell 20414 1937-6-8
Campanulaceae GH: 01796895 Downingia elegans (Douglas ex Lindley) Torrey USA: Idaho St. Maries F. W. Pennell 20962 1937-7-18
Ericaceae GH: 01683638 Pterospora andromedea Nuttall USA: Montana [data not captured] F. W. Pennell 21329 1937-8-28
Orobanchaceae GH: 02033535 Castilleja angustifolia (Nuttall) G. Don USA: Idaho (4700 f. alt.), 2 mi. south of Baker F. W. Pennell 20588 1937-6-27
GH: 02033579 Castilleja applegatei Fernald USA: Idaho 7400-7700 f. alt., Smith Mountain, near of B... F. W. Pennell 20804 1937-6-9
GH: 02033828 Castilleja ardifera J. F. Macbride & Payson USA: Idaho 6000 f. alt., 3 mi. n. w. of Ketchum F. W. Pennell 20653 1937-7-1
GH: 02033827 Castilleja ardifera J. F. Macbride & Payson USA: Idaho land near Wood R., 5700-5800 f. alt. F. W. Pennell 20642 1937-7-1
GH: 01876041 Castilleja buffumii A. Nelson USA: Wyoming Shell Creek, Big Horn Mountains F. W. Pennell 20468 1937-6-16
GH: 01876250 Castilleja chromosa A. Nelson USA: Wyoming 36 miles above Cody, along Shoshone River, w... F. W. Pennell 20480 1937-6-16
GH: 00056134 Castilleja glandulifera Pennell USA: Oregon Anthony, Anthony Lake, Elkhorn Mountains, sa... F. W. Pennell 21138 1937-8-1
GH: 00056135 Castilleja glandulifera Pennell USA: Oregon Anthony, Anthony Lake, Elkhorn Mountains, sa... F. W. Pennell 21138 1937-7-31
GH: 00056136 Castilleja glandulifera Pennell USA: Oregon Anthony Peak, Anthony Lake, Elkhorn Mountain... F. W. Pennell 21138 1937-7-31
GH: 01876997 Castilleja hispida Bentham USA: Montana e. of Clinton F. W. Pennell 20547 1937-6-24
GH: 01876996 Castilleja hispida Bentham USA: Montana e. of Clinton F. W. Pennell 20547 1937-6-24
GH: 01876995 Castilleja hispida Bentham USA: Montana East Fork of Bitterroot River, above Darby F. W. Pennell 20575 1937-6-26
GH: 01876986 Castilleja hispida Bentham USA: Idaho 2600-3100 f. alt., 6-8 mi. w. of Weippe F. W. Pennell 20934 1937-7-16
GH: 01876984 Castilleja hispida Bentham USA: Idaho 5200-5400 f. alt., below Frenchy Saddle, sou... F. W. Pennell 20796 1937-7-9
GH: 00056142 Castilleja hispida acuta Pennell USA: Oregon Above Adams Creek, Wallowa Mountains, open s... F. W. Pennell 21074 1937-7-28
GH: 01877396 Castilleja lauta A. Nelson USA: Oregon [data not captured] F. W. Pennell 21104 1937-7-28
GH: 01877395 Castilleja lauta A. Nelson USA: Montana e. of Logan Pass, Glacier National Park F. W. Pennell 21301 1937-8-25
GH: 01877662 Castilleja linariaefolia Bentham USA: Wyoming 33 mi. above Cody, along Shoshone River, wes... F. W. Pennell 20479 1937-6-16
GH: 01877738 Castilleja lutea A. Heller USA: Montana just west of summit of McDonald Pass, Contin... F. W. Pennell 20526 1937-6-23
GH: 01877737 Castilleja lutea A. Heller USA: Idaho 7000-7100 ft. alt., Alturas Lake, Sawt tooth... F. W. Pennell 20663 1937-7-2
GH: 01877736 Castilleja lutea A. Heller USA: Idaho 6600 f. alt., below Redfish Lake, Sawtooth R... F. W. Pennell 20680 1937-7-3
GH: 01877735 Castilleja lutea A. Heller USA: Idaho 6500 f. alt., along Tennessee Creek in Bear ... F. W. Pennell 20689 1937-7-3
GH: 01877734 Castilleja lutea A. Heller USA: Idaho 5800-5900 f. alt., along Deadwood River, Pay... F. W. Pennell 20714 1937-7-3
GH: 01878089 Castilleja miniata Douglas ex Hooker USA: Idaho 3 mi. n. w. of Ketchum F. W. Pennell 20649 1937-7-1
GH: 01878088 Castilleja miniata Douglas ex Hooker USA: Idaho Land near Wood R., F. W. Pennell 20643 1937-7-1
GH: 01878087 Castilleja miniata Douglas ex Hooker USA: Idaho Edge of aspen & pine grove F. W. Pennell 20967 1937-7-19
GH: 01878100 Castilleja miniata Douglas ex Hooker USA: Idaho 6000 f. alt., 3 miles n.w. of Ketchum F. W. Pennell 20654 1937-7-1
GH: 01878099 Castilleja miniata Douglas ex Hooker USA: Idaho Elk City F. W. Pennell 20857 1937-7-12
GH: 01878097 Castilleja miniata Douglas ex Hooker USA: Idaho Hill, above Martin F. W. Pennell 20627 1937-6-29
GH: 01878096 Castilleja miniata Douglas ex Hooker USA: Idaho Slope of Smith Mountain, north of Bear F. W. Pennell 20799a 1937-7-9
GH: 01878093 Castilleja miniata Douglas ex Hooker USA: Idaho South of Smith Mounatain, north of Bear F. W. Pennell 20796 1937-7-19
GH: 01878127 Castilleja miniata Douglas ex Hooker USA: Idaho East of Plummer F. W. Pennell 20973 1937-7-19
GH: 01878173 Castilleja miniata Douglas ex Hooker USA: Montana Logan Pass, Glacier National Park F. W. Pennell 21291 1937-8-25
GH: 01878172 Castilleja miniata Douglas ex Hooker USA: Montana north of Lake St. Marys, Mission Range F. W. Pennell 21326 1937-8-27
GH: 01878171 Castilleja miniata Douglas ex Hooker USA: Montana Lake St. Marys, Mission Range F. W. Pennell 21324 1937-8-27
GH: 01878389 Castilleja multisecta A. Nelson USA: Idaho Head of Woods R. F. W. Pennell 20659 1937-7-1
GH: 01878475 Castilleja pallescens (A. Gray) Greenman USA: Montana 8 mi. up Rattlesnake Canyon, n. of Missoula F. W. Pennell [data not captured] 20562 1937-6-24
GH: 01878585 Castilleja parviflora Bongard USA: Montana trail toward Trout L; n-w. of Lake McDonald,... F. W. Pennell 21316 1937-8-26
GH: 01878584 Castilleja parviflora Bongard USA: Idaho North Fork of Salmon River, above Gibbonsvil... F. W. Pennell 20587 1937-6
GH: 01878654 Castilleja pecten Rydberg USA: Montana east of Monida F. W. Pennell 20601 1937-6-28
GH: 01878652 Castilleja pecten Rydberg USA: Montana s. e. of Sawyer, along Bear Creek, Beaverhea... F. W. Pennell 20606 1937-6-28
GH: 01878935 Castilleja rhexifolia Rydberg USA: Idaho North Fork of Salmon River, above Gibbonvill... F. W. Pennell 20586 1937
GH: 01878934 Castilleja rhexifolia Rydberg USA: Idaho Bovill F. W. Pennell 20957 1937-7-18
GH: 01878941 Castilleja rhexifolia Rydberg USA: Montana Mt. Sentinel, about Missoula F. W. Pennell [no additional data] 20554 1937-6-24
GH: 01878869 Castilleja roseana Eastwood USA: Idaho Below Black Lake south Seven Devils Mountain... F. W. Pennell 20817 1937-7-9
GH: 01878996 Castilleja rubra (Drobow) Rebristaya USA: Montana McDonald Peak, Mission Range F. W. Pennell 21341 1937-8-28
GH: 01878994 Castilleja rubra (Drobow) Rebristaya USA: Idaho ascent from Placer creek, Cuddy Mountain, we... F. W. Pennell 20789 1937-7
GH: 01879170 Castilleja septentrionalis Lindley USA: Montana Avon F. W. Pennell 20532 1937-6-23
GH: 01879168 Castilleja septentrionalis Lindley USA: Montana Avon F. W. Pennell 20533 1937-6-23
GH: 01879629 Castilleja sp. Linnaeus USA: Montana Logan Pass, Glacier National Park F. W. Pennell 21302 1937-8-25
GH: 01879628 Castilleja sp. Linnaeus USA: Montana w. of Logan Pass, Glacier National Park F. W. Pennell 21298 1937-8-25
GH: 01879615 Castilleja sp. Linnaeus USA: Montana trail toward Trout L.; n. w. of Lake McDonal... F. W. Pennell 21319 1937-8-26
GH: 01879639 Castilleja sp. Linnaeus USA: Idaho Alturas Lake, Sawtooth Range F. W. Pennell 20673a 1937-7-2
GH: 01879638 Castilleja sp. Linnaeus USA: Idaho Alturas Lake, Sawtooth Range F. W. Pennell 20673 1937-7-2
GH: 01879695 Castilleja sp. Linnaeus USA: Idaho Cuddy Mountain, west of Council F. W. Pennell 20784 1937-7
GH: 01880023 Castilleja sp. Linnaeus USA: Idaho Ascent from Placer Creek Cuddy Mountain, wes... F. W. Pennell 20790 1937-7
GH: 01879443 Castilleja trifida Willdenow ex Melchior USA: Montana trail toward Trout L.; n.w. of Lake McDonald... F. W. Pennell 21318 1937-8-26
GH: 01880092 Cordylanthus ramosus Nuttall ex Bentham USA: Idaho Winsper F. W. Pennell 20615 1937-6-29
GH: 02080060 Pedicularis canadensis Linnaeus USA: Michigan 12 miles west of Manistique F. W. Pennell 20422 1937-6-8
Plantaginaceae GH: 00466415 Besseya rubra (Douglas ex Hooker) Rydberg USA: Montana Mt. Sentinel, above Missoula F. W. Pennell [data not captured] 20550 1937-6-24
GH: 01998258 Chionophila tweedyi (W. M. Canby & J. N. Rose) L. F. Henderson USA: Idaho [data not captured] F. W. Pennell 10724 1937-7-4
GH: 01998734 Collinsia parviflora Lindley USA: Idaho [data not captured] F. W. Pennell 20800 1937-7-9
GH: 01998728 Collinsia parviflora Lindley USA: Idaho [data not captured] F. W. Pennell 20875 1937-7-12
GH: 01998727 Collinsia parviflora Lindley USA: Idaho [data not captured] F. W. Pennell 20583 1937-6-26
GH: 01998725 Collinsia parviflora Lindley USA: Idaho [data not captured] F. W. Pennell 10644 1937-7-1
GH: 01998724 Collinsia parviflora Lindley USA: Idaho [data not captured] F. W. Pennell 20667 1937-7-2
GH: 01998766 Collinsia parviflora Lindley USA: Montana [data not captured] F. W. Pennell 20610 1937-6-28
GH: 01998764 Collinsia parviflora Lindley USA: Montana [data not captured] F. W. Pennell 20571 1937-6-26
GH: 02001884 Penstemon albertinus Greene USA: Montana [data not captured] F. W. Pennell 21292 1937-8-25
GH: 02001879 Penstemon albertinus Greene USA: Montana [data not captured] F. W. Pennell 20570 1937-6-26
GH: 02001894 Penstemon albertinus Greene USA: Montana [data not captured] F. W. Pennell 20577 1937-6-26
GH: 02001966 Penstemon albidus Nuttall USA: North Dakota [data not captured] F. W. Pennell 20440 1937-6-12
GH: 02001965 Penstemon albidus Nuttall USA: North Dakota [data not captured] F. W. Pennell 20451 1937-6-14
GH: 02001987 Penstemon albidus Nuttall USA: South Dakota about 10 mi. w. of Spearfish F. W. Pennell 21377 1937-9-7
GH: 02002149 Penstemon angustifolius Nuttall ex Pursh USA: North Dakota [data not captured] F. W. Pennell 20446 1937-6-12
GH: 02002217 Penstemon aridus Rydberg USA: Montana [data not captured] F. W. Pennell 20591 1937-6-28
GH: 02002216 Penstemon aridus Rydberg USA: Montana [data not captured] F. W. Pennell 20592 1937-6-28
GH: 02002302 Penstemon attenuatus Douglas ex Lindley USA: Idaho [data not captured] F. W. Pennell 20859 1937-7-12
GH: 02002301 Penstemon attenuatus Douglas ex Lindley USA: Idaho [data not captured] F. W. Pennell 20853 1937-7-12
GH: 02002300 Penstemon attenuatus Douglas ex Lindley USA: Idaho [data not captured] F. W. Pennell 20927 1937-7-16
GH: 02002335 Penstemon attenuatus Douglas ex Lindley USA: Oregon [data not captured] F. W. Pennell 21134 1937-7-31
GH: 00091145 Penstemon attenuatus hyacinthinus Pennell USA: Idaho Beargrass Mountain Ridge, east of Beargrass ... F. W. Pennell 20879 1937-7-12
GH: 02002366 Penstemon attenuatus hyacinthinus Pennell USA: Idaho [data not captured] F. W. Pennell 10975 1937-7-19
GH: 02002368 Penstemon attenuatus hyacinthinus Pennell USA: Idaho [data not captured] F. W. Pennell 20871 1937-7-12
GH: 02002385 Penstemon attenuatus pseudoprocerus (Rydberg) Cronquist USA: Idaho [data not captured] F. W. Pennell 20694 1937-7-3
GH: 02002382 Penstemon attenuatus pseudoprocerus (Rydberg) Cronquist USA: Idaho [data not captured] F. W. Pennell 20652 1937-7-1
GH: 00091194 Penstemon caelestinus Pennell USA: Montana 9 miles northeast of Garrison, along little ... F. W. Pennell 20536 1937-6-23
GH: 02002946 Penstemon caelestinus Pennell USA: Montana [data not captured] F. W. Pennell 20546 1937-6-24
GH: 02118174 Penstemon caryi Pennell USA: Wyoming Shell Creek, Big Horn Mountains F. W. Pennell 20476 1937-6-16
GH: 02118446 Penstemon confertus Douglas ex Lindley USA: Idaho [data not captured] F. W. Pennell 20860 1937-7-12
GH: 02118466 Penstemon confertus Douglas ex Lindley USA: Montana [data not captured] F. W. Pennell 21313 1937-8-25
GH: 02118465 Penstemon confertus Douglas ex Lindley USA: Montana [data not captured] F. W. Pennell 21317 1937-8-26
GH: 02118645 Penstemon cyaneus Pennell USA: Idaho [data not captured] F. W. Pennell 20635 1937-6-30
GH: 02118644 Penstemon cyaneus Pennell USA: Idaho [data not captured] F. W. Pennell 20641 1937-7-1
GH: 02118643 Penstemon cyaneus Pennell USA: Idaho [data not captured] F. W. Pennell 20650 1937-7-1
GH: 02118654 Penstemon cyaneus Pennell USA: Idaho [data not captured] F. W. Pennell 20625 1937-6-29
GH: 02118657 Penstemon cyaneus Pennell USA: Idaho [data not captured] F. W. Pennell 20632 1937-6-30
GH: 02118769 Penstemon davidsonii menziesii (D. D. Keck) Cronquist USA: Washington [data not captured] F. W. Pennell 21163 1937-8-3
GH: 02118828 Penstemon deustus Douglas USA: Idaho [data not captured] F. W. Pennell 20622 1937-6-29
GH: 02118957 Penstemon deustus variabilis (Suksdorf) Cronquist USA: Oregon [data not captured] F. W. Pennell 21027 1937-7-25
GH: 02119159 Penstemon diphyllus Rydberg USA: Idaho [data not captured] F. W. Pennell 20842 1937-7-11
GH: 02119158 Penstemon diphyllus Rydberg USA: Idaho [data not captured] F. W. Pennell 20881 1937-7-12
GH: 02119168 Penstemon diphyllus Rydberg USA: Montana [data not captured] F. W. Pennell 21354 1937-8-30
GH: 02119167 Penstemon diphyllus Rydberg USA: Montana [data not captured] F. W. Pennell 21350 1937-8-29
GH: 02119320 Penstemon ellipticus Coulter & Fisher USA: Montana [data not captured] F. W. Pennell 21328 1937-8-27
GH: 02119319 Penstemon ellipticus Coulter & Fisher USA: Montana [data not captured] F. W. Pennell 21305 1937-8-25
GH: 02119332 Penstemon ellipticus Coulter & Fisher USA: Montana [data not captured] F. W. Pennell 21331 1937-8-28
GH: 02119363 Penstemon eriantherus Pursh USA: Montana [data not captured] F. W. Pennell 20530 1937-6-23
GH: 02119362 Penstemon eriantherus Pursh USA: Montana [data not captured] F. W. Pennell 20528 1937-6-23
GH: 02119375 Penstemon eriantherus Pursh USA: South Dakota upper slope of Bad Land Rim, 8 miles south o... F. W. Pennell 21379 1937-9-7
GH: 02119385 Penstemon eriantherus Pursh USA: Wyoming Spotted Horse F. W. Pennell 21370 1937-9-5
GH: 02119548 Penstemon fruticosus (Pursh) Greene USA: Idaho [data not captured] F. W. Pennell 20765 1937-7-5
GH: 02119578 Penstemon fruticosus (Pursh) Greene USA: Oregon [data not captured] F. W. Pennell 21113 1937-7-28
GH: 02119592 Penstemon fruticosus (Pursh) Greene USA: Washington [data not captured] F. W. Pennell 21174 1937-8-4
GH: 02119626 Penstemon fruticosus douglasii (Hooker) C. K. Schneider USA: Oregon [data not captured] F. W. Pennell 21100 1937-7-28
GH: 02119625 Penstemon fruticosus douglasii (Hooker) C. K. Schneider USA: Oregon [data not captured] F. W. Pennell 21037 1937-7-26
GH: 02119623 Penstemon fruticosus douglasii (Hooker) C. K. Schneider USA: Montana [data not captured] F. W. Pennell 20578 1937-6-26
GH: 02119621 Penstemon fruticosus douglasii (Hooker) C. K. Schneider USA: Idaho [data not captured] F. W. Pennell 20637 1937-7-1
GH: 02119664 Penstemon fruticosus serratus (D. D. Keck) Cronquist USA: Idaho [data not captured] F. W. Pennell 20819 1937-7-9
GH: 02119654 Penstemon fruticosus serratus (D. D. Keck) Cronquist USA: Idaho [data not captured] F. W. Pennell 20805 1937-7-9
GH: 02119763 Penstemon glaber Pursh USA: South Dakota upper slope of Bad Land Rim, 8 mile south of... F. W. Pennell 21378 1937-9-7
GH: 02119780 Penstemon glaber Pursh USA: Wyoming along Shell Creek, Big Horn Mountains F. W. Pennell 20466 1937-6-16
GH: 02119791 Penstemon glaber Pursh USA: Wyoming 10 mi. n.w. of Gillette F. W. Pennell 21372 1937-9-5
GH: 02120389 Penstemon humilis Nuttall ex A. Gray USA: Idaho [data not captured] F. W. Pennell 20658 1937-7-1
GH: 02120424 Penstemon humilis Nuttall ex A. Gray USA: Idaho [data not captured] F. W. Pennell 20701 1937-7-3
GH: 02120423 Penstemon humilis Nuttall ex A. Gray USA: Idaho [data not captured] F. W. Pennell 20707 1937-7-3
GH: 02120422 Penstemon humilis Nuttall ex A. Gray USA: Idaho [data not captured] F. W. Pennell 20640 1937-7-1
GH: 02121012 Penstemon lyallii (A. Gray) A. Gray USA: Montana [data not captured] F. W. Pennell 21290 1937-8-25
GH: 02121006 Penstemon lyallii (A. Gray) A. Gray USA: Montana [data not captured] F. W. Pennell 21327 1937-8-27
GH: 02121207 Penstemon nitidus Douglas ex Bentham USA: Montana [data not captured] F. W. Pennell 20462 1937-6-15
GH: 02121196 Penstemon nitidus Douglas ex Bentham USA: Montana [data not captured] F. W. Pennell 21352 1937-8-29
GH: 02121212 Penstemon nitidus Douglas ex Bentham USA: Wyoming Shell Creek, Big Horn Mountains F. W. Pennell 20477 1937-6-16
GH: 02121291 Penstemon oreocharis Greene USA: Idaho [data not captured] F. W. Pennell 20791 1937-7-9
GH: 02121313 Penstemon oreocharis Greene USA: Idaho [data not captured] F. W. Pennell 20735 1937-7-4
GH: 02121359 Penstemon ovatus Douglas ex Hooker USA: Montana [data not captured] F. W. Pennell 20576 1937-6-26
GH: 02121356 Penstemon ovatus Douglas ex Hooker USA: Idaho [data not captured] F. W. Pennell 20793 1937-7-9
GH: 02121355 Penstemon ovatus Douglas ex Hooker USA: Idaho [data not captured] F. W. Pennell 20734 1937-7-4
GH: 02121353 Penstemon ovatus Douglas ex Hooker USA: Idaho [data not captured] F. W. Pennell 20878 1937-7-12
GH: 02121328 Penstemon ovatus Douglas ex Hooker USA: Idaho [data not captured] F. W. Pennell 20832 1937-7-10
GH: 02121360 Penstemon ovatus Douglas ex Hooker USA: Oregon [data not captured] F. W. Pennell 21042 1937-7-26
GH: 02121374 Penstemon ovatus pinetorum Piper & Beattie USA: Montana [data not captured] F. W. Pennell 21288 1937-8-23
GH: 02121373 Penstemon ovatus pinetorum Piper & Beattie USA: Montana [data not captured] F. W. Pennell 20545 1937-6-24
GH: 02121371 Penstemon ovatus pinetorum Piper & Beattie USA: Idaho [data not captured] F. W. Pennell 20585 1937-6-26
GH: 02121369 Penstemon ovatus pinetorum Piper & Beattie USA: Idaho [data not captured] F. W. Pennell 20835 1937-7-11
GH: 02121608 Penstemon payettensis A. Nelson & J. F. Macbride USA: Oregon [data not captured] F. W. Pennell 21084 1937-7-28
GH: 02121620 Penstemon payettensis A. Nelson & J. F. Macbride USA: Idaho [data not captured] F. W. Pennell 20702 1937-7-3
GH: 02121619 Penstemon payettensis A. Nelson & J. F. Macbride USA: Idaho [data not captured] F. W. Pennell 20686 1937-7-3
GH: 02121618 Penstemon payettensis A. Nelson & J. F. Macbride USA: Idaho [data not captured] F. W. Pennell 20687 1937-7-3
GH: 02121770 Penstemon procerus Douglas ex Graham USA: Idaho [data not captured] F. W. Pennell 20955 1937-7-18
GH: 02121799 Penstemon procerus Douglas ex Graham USA: Montana [data not captured] F. W. Pennell 20531 1937-6-23
GH: 02121964 Penstemon procerus tolmiei (Hooker) Cronquist USA: Washington [data not captured] F. W. Pennell 21162 1937-8-3
GH: 02121978 Penstemon pruinosus Douglas USA: Washington [data not captured] F. W. Pennell 21273 1937-8-20
GH: 02122131 Penstemon richardsonii Douglas ex Lindley USA: Washington [data not captured] F. W. Pennell 21148 1937-8-2
GH: 02122381 Penstemon rydbergii varians (A. Nelson) Cronquist USA: Oregon [data not captured] F. W. Pennell 21048 1937-7-26
GH: 02122380 Penstemon rydbergii varians (A. Nelson) Cronquist USA: Oregon [data not captured] F. W. Pennell 21101 1937-7-28
GH: 02122379 Penstemon rydbergii varians (A. Nelson) Cronquist USA: Oregon [data not captured] F. W. Pennell 21043 1937-7-26
GH: 02122378 Penstemon rydbergii varians (A. Nelson) Cronquist USA: Idaho [data not captured] F. W. Pennell 20691 1937-7-3
GH: 02122377 Penstemon rydbergii varians (A. Nelson) Cronquist USA: Idaho [data not captured] F. W. Pennell 20785 1937-7-8
GH: 02122376 Penstemon rydbergii varians (A. Nelson) Cronquist USA: Idaho [data not captured] F. W. Pennell 20811 1937-7-9
GH: 02122515 Penstemon serrulatus Menzies ex Smith USA: Washington [data not captured] F. W. Pennell 21177 1937-8-4
GH: 01801625 Penstemon sp. USA: Idaho [data not captured] F. W. Pennell 20697 1937-7-3
GH: 01801643 Penstemon sp. USA: Montana [data not captured] F. W. Pennell 20593 1937-6-28
GH: 00091405 Penstemon spatulatus Pennell USA: Oregon Around and below Ice Lake, head of Adams Cre... F. W. Pennell 21091 1937-7-28
GH: 02122571 Penstemon spatulatus Pennell USA: Oregon [data not captured] F. W. Pennell 21068 1937-7-26
GH: 01801010 Penstemon triphyllus Douglas USA: Idaho [data not captured] F. W. Pennell 20828 1937-7-10
GH: 01801008 Penstemon triphyllus Douglas USA: Idaho [data not captured] F. W. Pennell 20942 1937-7-16
GH: 01801006 Penstemon triphyllus Douglas USA: Idaho [data not captured] F. W. Pennell 20827 1937-7-10
GH: 01801018 Penstemon triphyllus Douglas USA: Washington [data not captured] F. W. Pennell 21022 1937-7-25
GH: 01801178 Penstemon venustus Douglas USA: Idaho [data not captured] F. W. Pennell 20831 1937-7-10
GH: 01801211 Penstemon venustus Douglas USA: Oregon [data not captured] F. W. Pennell 21032 1937-7-26
GH: 01801210 Penstemon venustus Douglas USA: Oregon [data not captured] F. W. Pennell 21088 1937-7-28
GH: 01801393 Penstemon watsonii A. Gray USA: Idaho [data not captured] F. W. Pennell 20539 1937-7-1
GH: 01801392 Penstemon watsonii A. Gray USA: Idaho [data not captured] F. W. Pennell 20638 1937-7-1
GH: 01804534 Synthyris missurica (Rafinesque) Pennell USA: Idaho [data not captured] F. W. Pennell 20808 1937-7-9
GH: 01804549 Synthyris missurica major (Hooker) Pennell USA: Idaho [data not captured] F. W. Pennell 20941 1937-7-16
GH: 01804548 Synthyris missurica major (Hooker) Pennell USA: Idaho [data not captured] F. W. Pennell 20945 1937-7-17
GH: 01804578 Synthyris platycarpa Gail & Pennell USA: Idaho [data not captured] F. W. Pennell 20873 1937-7-12
GH: 01804960 Veronica americana Schweinitz ex Bentham USA: Idaho [data not captured] F. W. Pennell 20863 1937-7-12
GH: 01804953 Veronica americana Schweinitz ex Bentham USA: Idaho [data not captured] F. W. Pennell 10648 1937-7-1
GH: 01804985 Veronica americana Schweinitz ex Bentham USA: Montana [data not captured] F. W. Pennell 20566 1937-6-26
GH: 01805668 Veronica cusickii A. Gray USA: Washington [data not captured] F. W. Pennell 21171 1937-8-3
GH: 01805640 Veronica cusickii A. Gray USA: Oregon [data not captured] F. W. Pennell 21098 1937-7-28
GH: 01811156 Veronica peregrina xalapensis (Kunth) Pennell USA: Idaho [data not captured] F. W. Pennell 20928 1937-7-16
GH: 01811187 Veronica peregrina xalapensis (Kunth) Pennell USA: Montana [data not captured] F. W. Pennell 21286 1937-8-22
GH: 01811548 Veronica scutellata Linnaeus USA: Montana [data not captured] F. W. Pennell 21287 1937-8-22
GH: 01811940 Veronica serpyllifolia humifusa (Dickson) Syme USA: Montana [data not captured] F. W. Pennell 20524 1937-6-23
GH: 01812462 Veronica wormskjoldii Roemer & Schultes USA: Oregon [data not captured] F. W. Pennell 21097 1937-7-28
GH: 01812461 Veronica wormskjoldii Roemer & Schultes USA: Oregon [data not captured] F. W. Pennell 21129 1937-7-31
Polemoniaceae GH: 01092400 Collomia linearis Nuttall USA: Idaho Rim of Snake River Canyon, south of Zaza F. W. Pennell 21004 1937-7-21
GH: 01571908 Phlox douglasii Hooker USA: Oregon [data not captured] F. W. Pennell 21093 1937-7-28
Scrophulariaceae GH: 01840746 Diplacus nanus (Hooker & Arnott) G. L. Nesom USA: Idaho Creaters of the Moon F. W. Pennell 20631 1937-6-30
GH: 01840754 Diplacus nanus (Hooker & Arnott) G. L. Nesom USA: Idaho Near Deadwood River, Payette National Forest F. W. Pennell 20706 1937-7-3
GH: 01841792 Erythranthe guttata (de Candolle) G. L. Nesom USA: Idaho Alturas Lake F. W. Pennell 20661 1937-7-2
GH: 01841768 Erythranthe guttata (de Candolle) G. L. Nesom USA: Idaho North of New Meadows F. W. Pennell 20826 1937-7-10
Solanaceae GH: 00273256 Hyoscyamus niger Linnaeus USA: Montana North of Drummond F. W. Pennell 21353 1937-8-29
