Asteraceae GH: 02141888 Anisocoma acaulis Torrey & A. Gray USA: California [data not captured] H. L. Mason 3034 1926-4-27
GH: 00414782 Chaenactis glabriuscula orcuttiana (Greene) H. M. Hall USA: California Five miles south of Laguna H. L. Mason 2914 1926-4-25
GH: 00387065 Corethrogyne filaginifolia (Hooker & Arnott) Nuttall USA: California Niles Canyon H. L. Mason 3252 1926-5-26
GH: 01833380 Hypochaeris glabra Linnaeus USA: California San Francisco: [data not captured] H. L. Mason 2874a 1926-4-18
GH: 01834774 Lactuca sativa Linnaeus USA: California [data not captured] H. L. Mason 3642 1926-10-12
GH: 01835042 Lactuca tatarica (Linnaeus) C. A. Meyer USA: Montana [data not captured] H. L. Mason 3509 1926-7-11
GH: 01835544 Malacothrix clevelandii A. Gray USA: California [data not captured] H. L. Mason 3171 1926-5-1
GH: 01835642 Malacothrix glabrata (A. Gray ex D. C. Eaton) A. Gray USA: California [data not captured] H. L. Mason 3006 1926-4-26
GH: 01835777 Malacothrix sonchoides (Nuttall) Torrey & A. Gray USA: California [data not captured] H. L. Mason 3072 1926-4-27
GH: 02593059 Microseris linearifolia (de Candolle) Schultz Bipontinus USA: California Rancho Repose, Cedar Mountain, Mount Hamilto... H. L. Mason 2824 1926-4-11
Boraginaceae GH: 02027768 Hackelia patens (Nuttall) I. M. Johnston USA: Wyoming Crescent Hill, Yellowstone National Park. H. L. Mason 3470 1926-6-29
GH: 01872846 Myosotis alpestris asiatica Vestergren ex Hultén USA: Wyoming Summit of Mount Washburn, Yellowstone Nation... H. L. Mason 3406 1926-6-26
GH: 01872847 Myosotis alpestris asiatica Vestergren ex Hultén USA: Wyoming Crescent Hill, Yellowstone National Park H. L. Mason 3466 1926-6-29
GH: 00420229 Plagiobothrys strictus (Greene) I. M. Johnston USA: California Calistoga: [No Additional Data] H. L. Mason 2745 1926-3-20
Brassicaceae GH: 01181550 Boechera breweri (S. Watson) Al-Shehbaz USA: California Summit of Mt. Diablo H. L. Mason 2706 1926-3-7
Crassulaceae GH: 01871832 Crassula connata A. Berger USA: California Corte Madera Ridge H. L. Mason 1926-3-6
GH: 01987415 Dudleya cymosa paniculata (Jepson) K. M. Nakai USA: California Niles Canyon H. L. Mason 3251 1926-6-26
GH: 00376752 Rhodiola integrifolia Rafinesque USA: California Hill slope back of Emerald Bay, above falls H. L. Mason 3313a 1926-5-30
GH: 00376752 Sedum rosea integrifolium (Rafinesque) Hultén USA: California Hill slope back of Emerald Bay, above falls H. L. Mason 3313a 1926-5-30
Cupressaceae A: 00356121 Cupressus sargentii Jepson USA: California Cedar Mountain, near summit H. L. Mason 1926-4-16
GH: 02107597 Xanthocyparis nootkatensis (D. Don) Farjon & D. K. Harder USA: Washington Mt. Rainier: [data not captured] H. L. Mason 3605 1926-7-31
Ericaceae GH: 00350134 Arctostaphylos canescens Eastwood USA: California near summit of Mountain. Toll House Canyon, ... H. L. Mason 2612 1926-1-2
GH: 00350135 Arctostaphylos canescens Eastwood USA: California West Peak, Mount Tamalpais H. L. Mason 2670 1926-2-28
GH: 00362035 Arctostaphylos pringlei drupacea Parry USA: California Palomar Mountain H. L. Mason 3165 1926-5-1
GH: 01117717 Arctostaphylos stanfordiana Parry USA: California Toll House Canyon, Mount St. Helena H. L. Mason 2611 1926-1-2
GH: 01536607 Arctostaphylos uva-ursi (Linnaeus) Sprengel USA: Wyoming Near Tower Falls, Yellowstone National Park H. L. Mason 3430 1926-6-27
GH: 00245841 Arctostaphylos virgata Eastwood USA: California Near the summit of road from Inverness to Po... H. L. Mason 2650 1926-2-21
GH: 01719176 Moneses sp. USA: Wyoming Mouth of Elk Creek, northwest of Tower Halls... H. L. Mason 3473 1926-7-2
Fabaceae GH: 01963144 Acmispon argophyllus (A. Gray) Brouillet USA: California Aguanga Valley H. L. Mason 3189 1926-5-2
GH: 02047398 Astragalus coccineus Brand USA: California Rock Creek, Mojave Desert slope of San Gabri... H. L. Mason 3044 1926-4-27
GH: 02047867 Astragalus didymocarpus Hooker & Arnott USA: California four miles west of Saugus H. L. Mason 2963 1926-4-26
GH: 02135328 Rupertia physodes (Douglas ex Hooker) J. W. Grimes USA: California [data not captured] H. L. Mason 3241 1926-5-26
GH: 02619525 Trifolium depauperatum Desvaux USA: California [data not captured] H. L. Mason 2758 1926-3-21
GH: 02342918 Trifolium gracilentum Torrey & A. Gray USA: California [data not captured] H. L. Mason 2951 1926-4-26
GH: 02289213 Trifolium willdenovii Sprengel USA: California [data not captured] H. L. Mason 3103 1926-4-28
GH: 02347358 Vicia sativa Linnaeus USA: California [data not captured] H. L. Mason 2750 1926-3-20
Frullaniaceae FH: 00498050 Frullania bolanderi Austin USA: California [data not captured] H. L. Mason 2613 1926-1-2
FH: 00498080 Frullania bolanderi Austin USA: California [data not captured] H. L. Mason 2600 1926-1-2
Gentianaceae GH: 00400106 Centaurium venustum (A. Gray) B. L. Robinson USA: California Pala Grade, Temescal Canyon H. L. Mason 3126 1926-4-30
GH: 00400106 Zeltnera venusta (A. Gray) G. Mansion USA: California Pala Grade, Temescal Canyon H. L. Mason 3126 1926-4-30
Krameriaceae GH: 00347702 Krameria canescens A. Gray USA: California Box S Spring, H. L. Mason 3083 1926-4-28
GH: 00347702 Krameria grayi Rose & Painter USA: California Box S Spring, H. L. Mason 3083 1926-4-28
Lamiaceae GH: 00400807 Pogogyne serpylloides (Torrey) A. Gray USA: California Arroyo Mocho, 6 miles south of Livermore, Mo... H. L. Mason 2803 1926-4-10
A: 00401598 Salazaria mexicana Torrey USA: California Vincent to Palmdale H. L. Mason 2981 1926-4-26
Lepidoziaceae FH: 00500045 Lepidozia reptans (Linnaeus) Dumortier USA: California [data not captured] H. L. Mason 3391 1926-6-6
Liliaceae GH: 00357385 Erythronium helenae Applegate USA: California East side of Mount St. Helena, Toll House Ca... H. L. Mason 2734 1926-3-14
Linaceae GH: 02053339 Linum lewisii Pursh USA: Wyoming Crescent Hill, Yellowstone National Park H. L. Mason 3469 1926-6-29
Plantaginaceae GH: 00365654 Keckiella antirrhinoides (Bentham) Straw USA: California Pala Grade H. L. Mason 3142 1926-4-30
GH: 02118790 Penstemon deustus Douglas USA: California [data not captured] H. L. Mason 3310 1926-5-30
GH: 02121755 Penstemon procerus Douglas ex Graham USA: California [data not captured] H. L. Mason 1085 1926-6-19
GH: 02122055 Penstemon radicosus A. Nelson USA: Wyoming Crescent Hill, Yellowstone National Park. H. L. Mason 3438 1926-6-29
Polygalaceae GH: 00347765 Polygala cornuta Kellogg USA: California Donner Pass Road near Alta H. L. Mason 3288 1926-5-29
Polygonaceae GH: 00369838 Chorizanthe cuspidata S. Watson USA: California sand dunes near San Francisco H. L. Mason 2871 1926-4-18
GH: 01717816 Chorizanthe staticoides Bentham USA: California Five miles below Laguna H. L. Mason 2913 1926-4-25
GH: 01986924 Eriogonum pusillum Torrey & A. Gray USA: California [data not captured] H. L. Mason 3012 1926-4-26
Portulacaceae GH: 01858650 Claytonia gypsophiloides Fischer & C. A. Meyer USA: California Mount St. Helena H. L. Mason 2716 1926-3-14
Pucciniaceae FH: 00873028 Cumminsiella sanguinea (Peck) Arthur USA: Oregon Blue Mountains H. L. Mason 1926-7
FH: 00950014 Puccinia crandallii Pammel & H. H. Hume USA: Wyoming Camp Roosevelt, Yellowstone Park H. L. Mason 1926
Rhamnaceae GH: 00349712 Ceanothus lemmonii Parry USA: California Rattlesnake Creek five miles south of Grass ... H. L. Mason 3284 1926-5-29
GH: 00425078 Ceanothus parvifolius (S. Watson) Trelease USA: California 1 mile west of Calaveras Grove H. L. Mason 3343 1926-5-31
Ricciaceae FH: 00510570 Ricciocarpos natans (Linnaeus) Corda USA: California [data not captured] H. L. Mason 2598 1926-1-1
Rosaceae GH: 01587712 Cercocarpus montanus glaber (S. Watson) F. L. Martin USA: California Palomar Mountain H. L. Mason 3157 1926-5-1
GH: 01608181 Dasiphora fruticosa (Linnaeus) Rydberg USA: Wyoming Crescent Hill, Yellowstone National Park H. L. Mason 3456 1926-6-29
GH: 01609028 Geum aleppicum strictum Fernald USA: Wyoming Camp Roosevelt. Yellowstone National Park H. L. Mason 3498 1926-7-10
GH: 01610554 Geum triflorum ciliatum (Pursh) Fassett USA: Wyoming Crescent Hill, Yellowstone National Park H. L. Mason 3432 1926-6-29
GH: 01590503 Physocarpus malvaceus (Greene) Kuntze USA: Wyoming Crescent Hill, Yellowstone National Park H. L. Mason 3447 1926-6-29
GH: 01566937 Potentilla biennis Greene USA: Wyoming Camp Roosevelt H. L. Mason 4399 1926-7-10
GH: 01556283 Potentilla sp. USA: Wyoming Crescent Hill, Yellowstone National Park H. L. Mason 3437 1926-6-29
GH: 00346243 Rubus spectabilis Pursh USA: California Inverness H. L. Mason 2644 1926-2-21
Saxifragaceae GH: 00381186 Micranthes nidifica (Greene) Small USA: California Hills above Emerald Bay, Lake Tahoe H. L. Mason 3306 1926-5-30
GH: 00380089 Ribes cereum Douglas USA: California Kit Carson Pass road H. L. Mason 3324 1926-5-30
GH: 00380490 Ribes menziesii leptosmum (Coville) Jepson USA: California Point Reyes H. L. Mason 2661 1926-2-21
GH: 00380635 Ribes nevadense Kellogg USA: California Sour-dough Spring, Palomar Mountain H. L. Mason 3164 1926-5-1
GH: 00380721 Ribes quercetorum Greene USA: California Arroyo Mocho Canyon H. L. Mason 2821 1926-4-10
GH: 00381136 Saxifraga californica Greene USA: California Mt. Diablo H. L. Mason 2702 1926-3-7
GH: 00381186 Saxifraga nidifica Greene USA: California Hills above Emerald Bay, Lake Tahoe H. L. Mason 3306 1926-5-30
Scrophulariaceae GH: 00367220 Diplacus puniceus Nuttall USA: California Pala grade, Temecula to Pala, Temecula Canyo... H. L. Mason 3119 1926-4-30
GH: 00367220 Mimulus aurantiacus puniceus (Nuttall) D. M. Thompson USA: California Pala grade, Temecula to Pala, Temecula Canyo... H. L. Mason 3119 1926-4-30
Solanaceae GH: 00244864 Solanum Linnaeus USA: California 5 miles above Auburn H. L. Mason 3269 1926-5-28
GH: 00244864 Solanum parishii A. Heller USA: California 5 miles above Auburn H. L. Mason 3269 1926-5-28
GH: 00244864 Solanum umbelliferum Eschscholtz USA: California 5 miles above Auburn H. L. Mason 3269 1926-5-28
Styracaceae GH: 00384818 Styrax redivivus (Torrey) L. C. Wheeler USA: California San Luis Rey River, four miles below Henshaw... H. L. Mason 3138 1926-4-30
Vitaceae GH: 00381668 Vitis californica Bentham USA: California Lake Eleanor H. L. Mason 2138 1926-6-29
