Asteraceae GH: 01924858 Ageratina occidentalis (Hooker) R. M. King & H. Robinson USA: California West side of Lake Tahoe above Emerald Bay, f... H. L. Mason 5464 1929-10-4
GH: 00414802 Blennosperma nanum (Hooker) S. F. Blake USA: California Wooded hills just south of Nortonville H. L. Mason 5045 1929-3-15
GH: 00414802 Blennosperma sp. USA: California Wooded hills just south of Nortonville H. L. Mason 5045 1929-3-15
GH: 02142525 Crepis capillaris (Linnaeus) Wallroth USA: California [data not captured] H. L. Mason 5398 1929-8-24
GH: 01835898 Microseris douglasii (de Candolle) Schultz Bipontinus USA: California [data not captured] H. L. Mason 5142 1929-3-31
Bignoniaceae GH: 02054930 Chilopsis linearis arcuata (Fosberg) Henrickson USA: Arizona north of Tuscon H. L. Mason 5372 1929-6-7
GH: 02054931 Chilopsis linearis arcuata (Fosberg) Henrickson USA: Arizona Kirkland Creek, twenty-five miles south of P... H. L. Mason 5384 1929-6-7
Caesalpiniaceae GH: 01676189 Cercis canadensis Linnaeus USA: California Middle Tule River, 3 mi. above Springville H. L. Mason 5078 1929-3-23
Celastraceae A: 01854120 Canotia holacantha Torrey USA: Arizona 23 miles northeast of Kingman H. L. Mason 5364 1929-6-2
GH: 00378519 Paxistima myrsinites (Pursh) Rafinesque USA: California hills along Shasta Creek Canyon H. L. Mason 5329 1929-5-18
Crassulaceae GH: 01871801 Crassula aquatica (Linnaeus) Schönland USA: California Herbarium of the University of California H. L. Mason 5196 1929-4-7
GH: 01991218 Sedella pumila Britton & Rose USA: California three miles above Valley Spring H. L. Mason 5200 1929-4-7
Ericaceae GH: 01536530 Arctostaphylos uva-ursi (Linnaeus) Sprengel USA: Oregon just south of Reedsport H. L. Mason 5289 1929-5-11
Fabaceae GH: 01967034 Acmispon strigosus (Nuttall) Brouillet USA: California Middle Tule River, three miles above Springv... H. L. Mason 5074 1929-3-23
GH: 01967159 Acmispon subpinnatus (Lagasca) D. D. Sokoloff USA: California Mt. Diablo H. L. Mason 5124 1929-3-29
GH: 02044619 Astragalus gambellianus E. Sheldon USA: California hills back of Madera H. L. Mason 5098 1929-3-23
GH: 02129769 Medicago lupulina Linnaeus USA: Washington [data not captured] H. L. Mason 5311 1929-5-15
GH: 02342247 Trifolium bifidum decipiens Greene USA: California [data not captured] H. L. Mason 5205 1929-4-25
GH: 02619544 Trifolium depauperatum amplectens (Torr. & A. Gray) Rattan USA: California [data not captured] H. L. Mason 5169 1929-4-7
GH: 02342797 Trifolium dichotomum Hooker & Arnott USA: California [data not captured] H. L. Mason 5228 1929-4-29
GH: 02620665 Trifolium fucatum Lindley USA: California [data not captured] H. L. Mason 5143 1929-3-31
GH: 02464295 Trifolium oliganthum Steudel USA: California about ten miles above Oakdale, Sierra foothi... H. L. Mason 5179 1929-4-7
GH: 02464277 Trifolium oliganthum Steudel USA: California Marsh Creek Road; two miles above Clayton H. L. Mason 5131 1929-3-29
GH: 02343746 Trifolium olivaceum griseum Jepson USA: California [data not captured] H. L. Mason 5181 1929-4-7
GH: 02289257 Trifolium willdenovii Sprengel USA: California [data not captured] H. L. Mason 5206 1929-4-25
Frankeniaceae GH: 00376220 Frankenia salina (Molina) I. M. Johnston USA: California 2-1/3 miles north of Cambria H. L. Mason 5503 1929-10-13
Gelidiaceae FH: 00909908 Gelidium cartilagineum (Linnaeus) Gaillon USA: California Cambria, CA H. L. Mason 1929-10-12
Geraniaceae GH: 00363408 California macrophylla (Hooker & Arnott) Aldasoro, C. Navarro, P. Vargas, L. Sáez & Aedo USA: California Briones Road to Antioch H. L. Mason 5209 1929-4-25
GH: 00363409 California macrophylla (Hooker & Arnott) Aldasoro, C. Navarro, P. Vargas, L. Sáez & Aedo USA: California Marsh Creek Road, about five miles from Bren... H. L. Mason 5060 1929-3-15
GH: 00363408 Erodium macrophyllum Hooker & Arnott USA: California Briones Road to Antioch H. L. Mason 5209 1929-4-25
GH: 00363409 Erodium macrophyllum Hooker & Arnott USA: California Marsh Creek Road, about five miles from Bren... H. L. Mason 5060 1929-3-15
Hippocastanaceae GH: 00381755 Aesculus californica (Spach) Nuttall USA: California Tehachapi Mountains, Tejon Pass, 30 miles fr... H. L. Mason 5358 1929-6-2
Hippuridaceae GH: 02000529 Hippuris vulgaris Linnaeus USA: Washington [data not captured] H. L. Mason 5316 1929-5-15
Lamiaceae GH: 00400938 Salvia sonomensis Greene USA: California between Kelseyville and Lower Lake H. L. Mason 5252 1929-4-29
Mimosaceae GH: 01680514 Acacia constricta Bentham USA: Arizona north of Tucson H. L. Mason 5374 1929-6-7
GH: 01680019 Mimosa aculeaticarpa biuncifera (Bentham) Barneby USA: Arizona fourteen miles north of Tucson H. L. Mason 5371 1929-6-7
Oleaceae GH: 01850333 Fraxinus velutina Torrey USA: Arizona North of Prescott H. L. Mason 5389 1929-6-7
Plantaginaceae GH: 00466666 Callitriche heterophylla Pursh USA: California Eighteen miles east of Madera, junction of Y... H. L. Mason 5111 1929-3-24
GH: 00466875 Callitriche marginata Torrey USA: California [data not captured] H. L. Mason 5171 1929-4-7
GH: 02120631 Penstemon laetus A. Gray USA: California [data not captured] H. L. Mason 3271 1929-5-28
GH: 01804656 Tonella collinsioides Nuttall ex A. Gray USA: Oregon [data not captured] H. L. Mason 5322 1929-5-18
GH: 01804647 Tonella collinsioides Nuttall ex A. Gray USA: California [data not captured] H. L. Mason 5255 1929-4-29
Polygonaceae GH: 01717887 Chorizanthe xantii S. Watson USA: California Tejon Pass, 30 miles from Bakersfield, Tehac... H. L. Mason 5354 1929-6-2
GH: 01986361 Eriogonum nudum pubiflorum Bentham USA: California [data not captured] H. L. Mason 5433 1929-9-21
GH: 02043997 Eriogonum vimineum Douglas ex Bentham USA: California [data not captured] H. L. Mason 5434 1929-9-21
Rhamnaceae GH: 00425227 Ceanothus rigidus Nuttall USA: California Big Sur Road, 20 miles south of Carmel H. L. Mason 5027 1929-3-2
GH: 00378340 Rhamnus crocea ilicifolia (Kellogg) C. B. Wolf USA: California Morro Creek drainage, 8.4 miles west of Atas... H. L. Mason 5493 1929-10-12
GH: 00378340 Rhamnus crocea ilicifolia (Kellogg) Greene USA: California Morro Creek drainage, 8.4 miles west of Atas... H. L. Mason 5493 1929-10-12
Rosaceae GH: 01587693 Cercocarpus montanus glaber (S. Watson) F. L. Martin USA: California Tehachapi Mountains, Tejon Pass thirty miles... H. L. Mason 5359 1929-6-2
Rutaceae GH: 01584305 Ptelea trifoliata angustifolia (Bentham) V. L. Bailey USA: Arizona Kirkland Creek, twenty-five miles southwest ... H. L. Mason 5383 1929-6-7
Saxifragaceae GH: 00363352 Chrysosplenium glechomifolium Nuttall ex Torrey & A. Gray USA: California Ten miles south of Crescent City H. L. Mason 5286 1929-5-10
GH: 00380896 Ribes speciosum Pursh USA: California Twenty-five miles up Carmel River on the Jam... H. L. Mason 5018 1929-3-1
GH: 00381167 Saxifraga mertensiana Bongard USA: California Five miles west of Laytonville H. L. Mason 5268 1929-5-9
