Aceraceae A: 01870876 Acer glabrum Torrey USA: Nevada higher slopes of Cave Creek Canyon, two mile... H. L. Mason 4812 1928-5-26
GH: 01870886 Acer glabrum Torrey USA: Nevada higher slopes of Cave Creek Canyon, two mile... H. L. Mason 4812 1928-5-26
Asteraceae GH: 02141646 Agoseris heterophylla cryptopleura (Nuttall) Greene USA: California [data not captured] H. L. Mason 4503 1928-5-4
GH: 00386520 Brickellia californica (Torrey & A. Gray) A. Gray USA: California Carmel River, 10 miles above Carmel Mission H. L. Mason 4988 1928-10-3
GH: 00387173 Corethrogyne californica de Candolle USA: California Hunter's Point H. L. Mason 4365 1928-4-25
GH: 00387173 Corethrogyne filaginifolia californica (de Candolle) Saroyan USA: California Hunter's Point H. L. Mason 4365 1928-4-25
GH: 02142327 Crepis acuminata Nuttall USA: Nevada [data not captured] H. L. Mason 4821 1928-5-27
GH: 02142637 Crepis modocensis Greene USA: Nevada [data not captured] H. L. Mason 4752 1928-5-25
GH: 00387415 Ericameria ericoides (Lessing) Nuttall ex Jepson USA: California Ten miles up Carmel River H. L. Mason 4993a 1928-10-3
GH: 01831097 Hedypnois cretica (Linnaeus) Dumont Courset USA: California [data not captured] H. L. Mason 4333 1928-4-13
GH: 01835613 Malacothrix floccifera (de Candolle) S. F. Blake USA: California [data not captured] H. L. Mason 4906 1928-7-14
GH: 00443003 Malacothrix saxatilis arachnoidea (E. A. McGregor) E. W. Williams USA: California Carmel River, four miles above Carmel Missio... H. L. Mason 4986 1928-10-3
GH: 00427768 Senecio flaccidus douglasii (de Candolle) B. L. Turner & T. M. Barkley USA: California Along Carmel River, ten miles east of Carmel... H. L. Mason 4991 1928-10-3
Boraginaceae GH: 01957164 Amsinckia tessellata A. Gray USA: Nevada Emmigrant Pass, Tuscarora Mountains H. L. Mason 4625 1928-5-18
GH: 01957165 Amsinckia tessellata A. Gray USA: Nevada about Big Spring near Cave Creek Post Office... H. L. Mason 4750 1928-5-24
GH: 00420039 Cryptantha holoptera (A. Gray) J. F. Macbride USA: California Hidden Springs Canyon, Coachella Mts. H. L. Mason 4232 1928-3-10
GH: 00420039 Johnstonella holoptera (A. Gray) Hasenstab & M.G. Simpson USA: California Hidden Springs Canyon, Coachella Mts. H. L. Mason 4232 1928-3-10
Brassicaceae GH: 00378695 Arabis blepharophylla Hooker & Arnott USA: California Inverness Ridge, Pt. Reyes H. L. Mason 4157 1928-2-18
Caesalpiniaceae GH: 01676186 Cercis canadensis Linnaeus USA: California Dugars H. L. Mason 4498 1928-5-4
Convolvulaceae GH: 00872743 Dichondra donelliana Tharp & M. C. Johnston USA: California San Bruno Mountains H. L. Mason 4156 1928-2-22
GH: 00872743 Dichondra repens J. R. Forster & G. Forster USA: California San Bruno Mountains H. L. Mason 4156 1928-2-22
Crassulaceae GH: 01987388 Dudleya cespitosa (Haworth) Britton & Rose USA: California Jenner H. L. Mason 4882 1928-7-10
GH: 00376753 Rhodiola integrifolia Rafinesque USA: California Tioga Mines H. L. Mason 4875 1928-7-5
GH: 01991219 Sedella pumila Britton & Rose USA: California Greene Valley, four miles north of Shingle S... H. L. Mason 4506 1928-5-4
GH: 00376753 Sedum rosea integrifolium (Rafinesque) Hultén USA: California Tioga Mines H. L. Mason 4875 1928-7-5
Ericaceae GH: 00350624 Arctostaphylos andersonii imbricata (Eastwood) J. E. Adams ex McMinn USA: California San Bruno Mountain H. L. Mason 4164 1928-2-22
GH: 00350161 Arctostaphylos columbiana Piper USA: California Fort Ross H. L. Mason 4290 1928-4-8
GH: 00350624 Arctostaphylos imbricata Eastwood USA: California San Bruno Mountain H. L. Mason 4164 1928-2-22
GH: 00350713 Arctostaphylos myrtifolia Parry USA: California One mile south of Ione H. L. Mason 4468 1928-5-3
GH: 00350826 Arctostaphylos nummularia A. Gray USA: California Fort Bragg H. L. Mason 4998 1928-10-21
GH: 00362400 Arctostaphylos viscida Parry USA: California one mile south of Ione H. L. Mason 4466 1928-5-3
GH: 00362608 Cassiope mertensiana californica Piper USA: California Tioga Mines H. L. Mason 4877 1928-7-5
GH: 00362789 Phyllodoce breweri (A. Gray) A. Heller USA: California Tioga Mines H. L. Mason 4876 1928-7-5
GH: 00362991 Rhododendron columbianum (Piper) Harmaja USA: California Mesa one mile east of mouth of Noyo River H. L. Mason 1928-8-25
GH: 00363055 Rhododendron macrophyllum D. Don ex Don USA: California Fort Ross to Willits H. L. Mason 4896 1928-7-11
Fabaceae GH: 01963418 Acmispon grandiflorus (Bentham) Brouillet USA: California Hastings Creek near Pilot Hill H. L. Mason 4531 1928-5-4
GH: 01963725 Acmispon micranthus (Torr. & A. Gray) Brouillet USA: California Sycamore Canyon, south slope Mt. Diablo H. L. Mason 4428 1928-4-29
GH: 01963977 Acmispon rigidus (Bentham) Brouillet USA: California Desert flats near Indio H. L. Mason 4240 1928-3-11
GH: 02064491 Astragalus atratus S. Watson USA: Nevada Overland Pass, south end of Ruby Range H. L. Mason 4825 1928-5-27
GH: 02049492 Astragalus newberryi A. Gray USA: Nevada near Cave Creek Post Office, Ruby Valley H. L. Mason 4691 1928-5-22
GH: 02049493 Astragalus newberryi A. Gray USA: Nevada near Cave Creek Post Office, Ruby Valley H. L. Mason 4693 1928-5-22
GH: 00366514 Hosackia gracilis Bentham USA: California Fort Ross H. L. Mason 4281 1928-4-8
GH: 00366505 Hosackia gracilis Bentham USA: California north of San Rafael H. L. Mason 4308 1928-4-13
GH: 00366505 Lotus formosissimus Greene USA: California north of San Rafael H. L. Mason 4308 1928-4-13
GH: 00366514 Lotus formosissimus Greene USA: California Fort Ross H. L. Mason 4281 1928-4-8
GH: 02131809 Pediomelum californicum (S. Watson) Rydberg USA: California [data not captured] H. L. Mason 4573 1928-5-6
GH: 02137885 Trifolium albopurpureum Torrey & A. Gray USA: California [data not captured] H. L. Mason 4303 1928-4-13
GH: 02137884 Trifolium albopurpureum Torrey & A. Gray USA: California [data not captured] H. L. Mason 4500 1928-5-4
GH: 02137875 Trifolium albopurpureum Torrey & A. Gray USA: California [data not captured] H. L. Mason 4437 1928-4-29
GH: 02619432 Trifolium barbigerum Torrey USA: California [data not captured] H. L. Mason 4502 1928-5-4
GH: 02342248 Trifolium bifidum decipiens Greene USA: California [data not captured] H. L. Mason 4511 1928-5-4
GH: 02342246 Trifolium bifidum decipiens Greene USA: California [data not captured] H. L. Mason 4348 1928-4-15
GH: 02342559 Trifolium ciliolatum Bentham USA: California [data not captured] H. L. Mason 4352 1928-4-15
GH: 02619524 Trifolium depauperatum Desvaux USA: California [data not captured] H. L. Mason 4336 1928-4-13
GH: 02619578 Trifolium depauperatum truncatum (Greene) J. S. Martin ex Isely USA: California [data not captured] H. L. Mason 4367 1928-4-25
GH: 02619624 Trifolium depauperatum truncatum (Greene) J. S. Martin ex Isely USA: California [data not captured] H. L. Mason 4335 1928-4-13
GH: 02619545 Trifolium depauperatum amplectens (Torr. & A. Gray) Rattan USA: California [data not captured] H. L. Mason 4376 1928-4-25
GH: 02342796 Trifolium dichotomum Hooker & Arnott USA: California [data not captured] H. L. Mason 4569 1928-5-6
GH: 02620653 Trifolium fucatum Lindley USA: California [data not captured] H. L. Mason 4371 1928-4-25
GH: 02343490 Trifolium macraei Hooker & Arnott USA: California [data not captured] H. L. Mason 4369 1928-4-25
GH: 02343604 Trifolium microcephalum Pursh USA: California [data not captured] H. L. Mason 4340 1928-4-13
GH: 02620726 Trifolium microdon Hooker & Arnott USA: California [data not captured] H. L. Mason 4406 1928-4-28
GH: 02620728 Trifolium microdon Hooker & Arnott USA: California [data not captured] H. L. Mason 4306 1928-4-13
GH: 02464279 Trifolium oliganthum Steudel USA: California Cedar Mountain H. L. Mason 4560 1928-5-6
GH: 02498827 Trifolium variegatum Nuttall USA: California meadow north of San Rafael H. L. Mason 4311 1928-4-13
GH: 02498852 Trifolium variegatum Nuttall USA: California Swift ranch near Latrobe H. L. Mason 4492 1928-5-4
GH: 02498856 Trifolium variegatum Nuttall USA: California Tiburon Peninsula H. L. Mason 4393 1928-4-28
GH: 02289214 Trifolium willdenovii Sprengel USA: California [data not captured] H. L. Mason 4307 1928-4-13
Frankeniaceae GH: 00376201 Frankenia salina (Molina) I. M. Johnston USA: California San Joaquin Delta near Holt H. L. Mason 4967 1928-9-30
Frullaniaceae FH: 00498193 Frullania franciscana M. Howe USA: California [data not captured] H. L. Mason 4990 1928-10-20
Gentianaceae GH: 00400175 Centaurium muehlenbergii (Grisebach) W. Wight USA: California East fork of Eel River near Garberville H. L. Mason 4903 1928-7-14
GH: 00400175 Zeltnera muehlenbergii (Grisebach) G. Mansion USA: California East fork of Eel River near Garberville H. L. Mason 4903 1928-7-14
Hippuridaceae GH: 02000489 Hippuris vulgaris Linnaeus USA: Nevada [data not captured] H. L. Mason 4675 1928-5-21
Lamiaceae GH: 00400308 Hyptis emoryi Torrey USA: California Hidden Springs Canyon, Coachella Mountains H. L. Mason 4231 1928-3-10
GH: 00400789 Pogogyne zizyphoroides Bentham USA: California Hills near Carbondale H. L. Mason 4476 1928-5-3
Limnanthaceae GH: 01181274 Limnanthes douglasii R. Brown USA: California [data not captured] H. L. Mason 4310 1928-4-13
GH: 01181285 Limnanthes douglasii R. Brown USA: California [data not captured] H. L. Mason 4299 1928-4-8
Linaceae GH: 00364918 Hesperolinon congestum (A. Gray) Small USA: California Tiburon Peninsula H. L. Mason 4409 1928-4-28
Myricaceae A: 00343901 Morella californica (Chamisso) Wilbur USA: California along coast; canyon two miles north of Fort ... H. L. Mason 4893 1928-7-11
A: 00343914 Morella californica (Chamisso) Wilbur USA: California At border of deep forest and pygmy forest; m... H. L. Mason 4926 1928-8-25
A: 00343901 Myrica californica Chamisso USA: California along coast; canyon two miles north of Fort ... H. L. Mason 4893 1928-7-11
A: 00343914 Myrica californica Chamisso USA: California At border of deep forest and pygmy forest; m... H. L. Mason 4926 1928-8-25
Oleaceae GH: 00401236 Fraxinus latifolia Bentham USA: California Near Cosumnes River bridge at mouth of Clark... H. L. Mason 4490a 1928-5-3
GH: 00401236 Fraxinus oregona Nuttall USA: California Near Cosumnes River bridge at mouth of Clark... H. L. Mason 4490a 1928-5-3
Papaveraceae GH: 00257618 Meconella californica Torrey USA: California San Bruno Mountains H. L. Mason 4162 1928-2-22
GH: 00257618 Meconella oregana californica (Torrey & Fremont) Jepson USA: California San Bruno Mountains H. L. Mason 4162 1928-2-22
Pelliaceae FH: 00508245 Pellia neesiana (Gottsche) Limpricht USA: California [data not captured] H. L. Mason 4991 1928-10-20
Plantaginaceae GH: 00048919 Callitriche autumnalis bicarpellaris Fenley ex Jepson USA: California four miles north of Clementes H. L. Mason 4445 1928-5-3
GH: 00048919 Callitriche fassettii Schotsman USA: California four miles north of Clementes H. L. Mason 4445 1928-5-3
GH: 00048919 Callitriche hermaphroditica Linnaeus USA: California four miles north of Clementes H. L. Mason 4445 1928-5-3
GH: 00048919 Callitriche hermaphroditica bicarpellaris (Fenley ex Jepson) H. Mason USA: California four miles north of Clementes H. L. Mason 4445 1928-5-3
GH: 01999438 Gratiola ebracteata Bentham ex A. de Candolle USA: California [data not captured] H. L. Mason 4473 1928-5-3
GH: 00365764 Keckiella corymbosa (Bentham) Straw USA: California East Fork of the Eel River near Garberville H. L. Mason 4900 1928-7-14
GH: 02120447 Penstemon humilis Nuttall ex A. Gray USA: Nevada [data not captured] H. L. Mason 4794 1928-5-26
GH: 02122624 Penstemon speciosus Douglas USA: Nevada [data not captured] H. L. Mason 4791 1928-5-26
Polygonaceae GH: 01966585 Eriogonum spergulinum A. Gray USA: California [data not captured] H. L. Mason 4871 1928-7-4
GH: 01966961 Eriogonum thomasii Torrey USA: California [data not captured] H. L. Mason 4190 1928-3-10
Primulaceae GH: 00424219 Dodecatheon subalpinum Eastwood USA: California Yosemite Creek drainage, Tioga Road, head of... H. L. Mason 4867 1928-7-3
Pucciniaceae FH: 00955634 Puccinia harknessii Vize USA: California Carmel Creek, Monterey H. L. Mason 1928-10-14
FH: 00951905 Puccinia veratri Niessl USA: California Fort Bragg H. L. Mason 1928-8-25
Ranunculaceae GH: 01709644 Aquilegia formosa Fischer USA: Nevada one mile southwest of Cave Creek Post Office... H. L. Mason 4782 1928-5-25
Rhamnaceae GH: 00349972 Ceanothus palmeri Trelease USA: California near bridge of Cosumnes River at mouth of Cl... H. L. Mason 4488 1928-5-3
GH: 00349973 Ceanothus palmeri Trelease USA: California Rose Springs (Eggars) H. L. Mason 4519 1928-5-4
GH: 00349974 Ceanothus palmeri Trelease USA: California near bridge of Cosumnes River at mouth of Cl... H. L. Mason 4488 1928-5-3
GH: 00425079 Ceanothus parvifolius (S. Watson) Trelease USA: California Rose Springs, Eggars H. L. Mason 4518 1928-5-4
GH: 00425434 Ceanothus tomentosus Parry USA: California hills one mile south of Ione H. L. Mason 4467 1928-5-3
Rosaceae GH: 00346789 Amelanchier alnifolia (Nuttall) Nuttall ex M. Roemer USA: California Near bridge of Cosumnes River at mouth of Cl... H. L. Mason 4490 1928-5-3
GH: 01729510 Amelanchier utahensis Koehne USA: Nevada Hills about Big Spring near Cave Creek P. O.... H. L. Mason 4725 1928-5-23
GH: 00345648 Horkelia parryi Greene USA: California One mile south of Ione H. L. Mason 4464 1928-5-3
GH: 00346051 Rosa nutkana C. Presl USA: California East fork of the Eel River near Garberville H. L. Mason 4904 1928-7-14
Rutaceae GH: 00347953 Ptelea baldwinii crenulata (Greene) Jepson USA: California Mt. Diablo H. L. Mason 1928-3-31
GH: 00347954 Ptelea baldwinii crenulata (Greene) Jepson USA: California Mt. Diablo H. L. Mason 1928-3-31
GH: 00347958 Ptelea baldwinii crenulata (Greene) Jepson USA: California Canyon back of Antioch hills north of Mount ... H. L. Mason 4270 1928-4-1
GH: 00347960 Ptelea baldwinii crenulata (Greene) Jepson USA: California Granite Canyon southwest of Coloma H. L. Mason 4521 1928-5-4
GH: 00347953 Ptelea crenulata Greene USA: California Mt. Diablo H. L. Mason 1928-3-31
GH: 00347954 Ptelea crenulata Greene USA: California Mt. Diablo H. L. Mason 1928-3-31
GH: 00347958 Ptelea crenulata Greene USA: California Canyon back of Antioch hills north of Mount ... H. L. Mason 4270 1928-4-1
GH: 00347960 Ptelea crenulata Greene USA: California Granite Canyon southwest of Coloma H. L. Mason 4521 1928-5-4
Saxifragaceae GH: 00363379 Heuchera pilosissima Fischer & C. A. Meyer USA: California Coast 2 miles N. of Ft. Ross H. L. Mason 4286 1928-4-8
GH: 00381227 Tiarella unifoliata Hooker USA: California Canyon 2 miles north of Fort Ross H. L. Mason 4888 1928-7-11
Solanaceae GH: 00244920 Solanum umbelliferum Eschscholtz USA: California South bank of Cosumnes River opposite Clark ... H. L. Mason 4485 1928-5-3
GH: 00244920 Solanum xanti intermedium Parish USA: California South bank of Cosumnes River opposite Clark ... H. L. Mason 4485 1928-5-3
Taxodiaceae A: 00357849 Sequoia sempervirens (D. Don) Endlicher USA: California Pudding Creek, Mendocino County H. L. Mason 1928-8-26
