Asteraceae GH: 01234204 Artemisia norvegica saxatilis Hall & Clements USA: Alaska Nome Census Area: Rocky Point, Norton Sound H. L. Mason 1931-7-17
GH: 01234633 Artemisia tilesii Ledebour USA: Alaska Bethel Census Area: St. Matthew Island H. L. Mason 1931-9-1
Betulaceae GH: 02195253 Betula glandulosa Michaux USA: Alaska Prince of Wales-Hyder Census Area: Dolgoi Is... H. L. Mason 6015 1931-5-24
GH: 02195610 Betula nana exilis (V. N. Sukacev) Hultén USA: Alaska Nome Census Area: Cascade Creek, Norton Soun... H. L. Mason 1931-6-9
GH: 02195597 Betula nana exilis (V. N. Sukacev) Hultén USA: Alaska Nome Census Area: St. Michael, Norton Sound. H. L. Mason 6046 1931-6-8
Boraginaceae GH: 02058585 Mertensia maritima (Linnaeus) Gray USA: Alaska Nome Census Area: St. Lawrence Island, Berin... H. L. Mason 1931-7-12
GH: 02059444 Myosotis alpestris asiatica Vestergren ex Hultén USA: Alaska Cape Lisburne. H. L. Mason 1931-8-13
Brassicaceae GH: 00999870 Cardamine purpurea Chamisso & Schlechtendal USA: Alaska Nome Census Area: St. Lawrence Island, Berin... H. L. Mason 1931-7-10
GH: 01087855 Cochlearia officinalis arctica (D. F. K. Schlechtendal ex de Candolle) Gelert USA: Alaska Nome Census Area: St. Lawrence Island, Berin... H. L. Mason 6071 1931-6-26
GH: 01573040 Parrya nudicaulis septentrionalis Hultén USA: Alaska Nome Census Area: St. Lawrence Island, Berin... H. L. Mason 1931-7-10
GH: 01573059 Parrya nudicaulis septentrionalis Hultén USA: Alaska Cape Lisburne. H. L. Mason 1931-8-13
Caryophyllaceae GH: 01744656 Honckenya peploides (Linnaeus) Ehrhart USA: Alaska Nome Census Area: St. Lawrence Island, Berin... H. L. Mason 1931-7-12
Cornaceae GH: 02019894 Cornus suecica Linnaeus USA: Alaska Nome Census Area: Rocky Point, Norton Sound. H. L. Mason 1931-7-17
Crassulaceae GH: 01990006 Sedum rosea (Linnaeus) Scopoli USA: Alaska St. Lawrence Island, Bering Sea. Sevoonga. H. L. Mason 6074 1931-6-26
Ericaceae GH: 00350222 Arctostaphylos densiflora M. S. Baker USA: California Vine Hill School, twelve miles west of Santa... H. L. Mason 5805 1931-3-7
GH: 01536988 Arctous rubra (Rehder & Wilson) Nakai USA: Alaska Rocky Point, Norton Sound H. L. Mason 1931-7-17
GH: 01536990 Arctous rubra (Rehder & Wilson) Nakai USA: Alaska Dolgoi Island, Aleutian Chain H. L. Mason 6002 1931-5-24
GH: 01536995 Arctous rubra (Rehder & Wilson) Nakai USA: Alaska Unalaska H. L. Mason 6022 1931-5-30
GH: 01537476 Cassiope tetragona (Linnaeus) D. Don USA: Alaska Cape Lisburne H. L. Mason 1931-8-13
GH: 01537477 Cassiope tetragona (Linnaeus) D. Don USA: Alaska St. Lawrence Island, Bering Sea. Iviktook La... H. L. Mason 1931-7-10
GH: 01537518 Cassiope tetragona (Linnaeus) D. Don USA: Alaska St. Lawrence Island, Bering Sea. Naskook Lag... H. L. Mason 1931-7-12
GH: 01591048 Empetrum nigrum Linnaeus USA: Alaska Dolgoi Island, Aleutian Chain H. L. Mason 6005 1931-5-24
GH: 01591049 Empetrum nigrum Linnaeus USA: Alaska Whale Island, Norton Sound H. L. Mason 6055 1931-6-8
GH: 01591050 Empetrum nigrum Linnaeus USA: Alaska Unalaska H. L. Mason 6023 1931-5-30
GH: 01595233 Loiseleuria procumbens (Linnaeus) Desvaux USA: Alaska Unalaska: [no additional data] H. L. Mason 6021 1931-5-30
GH: 01761862 Pyrola minor Linnaeus USA: Alaska [data not captured] H. L. Mason 1931-7-17
GH: 01765268 Rhododendron tomentosum Harmaja USA: Alaska [data not captured] H. L. Mason 1931-8-13
Fabaceae GH: 01963285 Acmispon cytisoides (Bentham) Brouillet USA: California Road between Monterey and Carmel H. L. Mason 5881 1931-11
GH: 02064042 Astragalus alpinus Linnaeus USA: Alaska Point Lay, Arctic Coast H. L. Mason 1931-8-2
GH: 02030173 Astragalus umbellatus Bunge USA: Alaska Nome Census Area: St. Lawrence Island, Berin... H. L. Mason 6113 1931-7-10
GH: 02131168 Oxytropis maydelliana Trautvetter USA: Alaska [data not captured] H. L. Mason 1931-7-29
GH: 02131272 Oxytropis nigrescens Fischer ex de Candolle USA: Alaska [data not captured] H. L. Mason 1931-7-10
GH: 02131259 Oxytropis nigrescens Fischer ex de Candolle USA: Alaska [data not captured] H. L. Mason 1931-7-29
GH: 02342845 Trifolium eriocephalum Nuttall USA: California [data not captured] H. L. Mason 5868 1931-5-9
GH: 02620708 Trifolium grayi Lojacono USA: California [data not captured] H. L. Mason 5843 1931-4-12
Gentianaceae GH: 02072715 Gentiana glauca Pallas USA: Alaska Nome Census Area: Rocky Point, Norton Sounds... H. L. Mason 1931-7-17
Hippuridaceae GH: 02000401 Hippuris vulgaris Linnaeus USA: Alaska [data not captured] H. L. Mason 1931-8-13
Lycopodiaceae GH: 02163057 Diphasiastrum alpinum (Linnaeus) Holub USA: Alaska Nome Census Area: Rocky Point, Norton Sound H. L. Mason 1931-7-17
GH: 02163056 Diphasiastrum alpinum (Linnaeus) Holub USA: Alaska Unalaska: [no additional data] H. L. Mason 6018 1931-5-30
GH: 02077360 Huperzia selago (Linnaeus) Bernhardi ex Schrank & Martius USA: Alaska Unalaska: Dutch Harbor, Unalaska H. L. Mason 6032 1931-5-30
GH: 02077318 Huperzia selago (Linnaeus) Bernhardi ex Schrank & Martius USA: Alaska Nome Census Area: St. Lawrence Island, Berin... H. L. Mason 1931-7-12
GH: 02077319 Huperzia selago (Linnaeus) Bernhardi ex Schrank & Martius USA: Alaska Nome Census Area: Rocky Point, Norton Sound H. L. Mason 1931-7-17
GH: 02077316 Huperzia selago (Linnaeus) Bernhardi ex Schrank & Martius USA: Alaska Prince of Wales-Hyder Census Area: Dolgoi Is... H. L. Mason 6009 1931-5-24
GH: 02077317 Huperzia selago (Linnaeus) Bernhardi ex Schrank & Martius USA: Alaska Prince of Wales-Hyder Census Area: Dolgoi Is... H. L. Mason 1931-5-24
GH: 02076489 Spinulum annotinum (Linnaeus) A. Haines USA: Alaska Prince of Wales-Hyder Census Area: Dolgoi Is... H. L. Mason 6010 1931-5-24
GH: 02076488 Spinulum annotinum (Linnaeus) A. Haines USA: Alaska Unalaska: Unalaska H. L. Mason 6020 1931-5-30
GH: 02076534 Spinulum annotinum (Linnaeus) A. Haines USA: Alaska Nome Census Area: Rocky Point, Norton Sound H. L. Mason 1931-7-17
Onagraceae GH: 01625416 Camissonia campestris (Greene) P. H. Raven USA: California Antioch sandhills H. L. Mason 5820 1931-4-5
Orchidaceae AMES: 02065839 Dactylorhiza aristata (Fischer ex Lindley) Soó USA: Alaska Unalaska: Dutch Harbor H. L. Mason 6033 1931-5-30
Orobanchaceae GH: 02079403 Pedicularis lanata Willdenow ex Chamisso & Schlechtendal USA: Alaska Nome Census Area: St. Michael, Norton Sound H. L. Mason 6047 1931-6-8
GH: 02079544 Pedicularis langsdorffii Fischer ex Steven USA: Alaska Nome Census Area: St. Lawrence Island, Berin... H. L. Mason 6090 1931-7-9
A: 02079900 Pedicularis parviflora pennellii (Hultén) Hultén USA: Alaska Nome Census Area: Rocky Point, Norton Sound. H. L. Mason 1931-7-17
GH: 02078324 Pedicularis sudetica Willdenow USA: Alaska Nome Census Area: St. Lawrence Island, Berin... H. L. Mason 6111a 1931-7-10
Papaveraceae GH: 01739040 Corydalis pauciflora (Stephan ex Willdenow) Persoon USA: Alaska Cape Lisburne. H. L. Mason 1931-8-13
GH: 00257602 Meconella californica Torrey USA: California Lagunitas Creek H. L. Mason 5810 1931-3-13
GH: 00257602 Meconella oregana californica (Torrey & Fremont) Jepson USA: California Lagunitas Creek H. L. Mason 5810 1931-3-13
GH: 01857465 Papaver macounii Greene USA: Alaska Nome Census Area: Port Clarence, Bering Stra... H. L. Mason 1931-7-19
Polygonaceae GH: 02346539 Bistorta plumosa (Small) Greene USA: Alaska [data not captured] H. L. Mason 1931-7-17
GH: 02365918 Oxyria digyna (Linnaeus) Hill USA: Alaska [data not captured] H. L. Mason 1931-7-9
Portulacaceae GH: 01858462 Claytonia acutifolia Pallas ex Willdenow USA: Alaska Nome Census Area: St. Lawrence Island, Berin... H. L. Mason 6104 1931-7-10
Primulaceae GH: 01942070 Androsace chamaejasme lehmanniana (Sprengel) Hultén USA: Alaska Nome Census Area: St. Lawrence Island, Berin... H. L. Mason 1931-7-10
GH: 01942070 Androsace lehmanniana Sprengel USA: Alaska Nome Census Area: St. Lawrence Island, Berin... H. L. Mason 1931-7-10
GH: 01927653 Primula borealis Duby USA: Alaska Nome Census Area: St. Lawrence Island, Berin... H. L. Mason 6086 1931-6-26
GH: 01927796 Primula eximia Greene USA: Alaska Nome Census Area: St. Lawrence Island, Berin... H. L. Mason 6070 1931-6-26
Ranunculaceae GH: 01720509 Aconitum delphinifolium de Candolle USA: Alaska Rocky Point, Norton Sound. H. L. Mason 1931-7-17
GH: 01707534 Anemone narcissiflora villosissima de Candolle USA: Alaska Unalaska: Dutch Harbor, Unalaska. H. L. Mason 6039 1931-5-30
GH: 01708391 Anemone richardsonii Hooker USA: Alaska Nome Census Area: Rocky Point, Norton Sound. H. L. Mason 1931-7-17
GH: 01657764 Coptidium pallasii Tzvelev USA: Alaska Cape Lisburne H. L. Mason 1931-8-13
GH: 01658032 Coptis trifolia (Linnaeus) Salisbury USA: Alaska Unalaska: Dutch Harbor, Unalaska. H. L. Mason 6027 1931-5-30
GH: 01836347 Ranunculus nivalis Linnaeus USA: Alaska Nome Census Area: St. Lawrence Island, Berin... H. L. Mason 6088 1931-6-26
Rhamnaceae GH: 00349351 Ceanothus gloriosus exaltatus J. T. Howell USA: California Vine Hill School, 12 miles west of Santa Ros... H. L. Mason 5802 1931-3-7
GH: 00349515 Ceanothus integerrimus Hooker & Arnott USA: California Santa Lucia Mountains, near Santa Lucia Rang... H. L. Mason 5848 1931-4-19
GH: 00425153 Ceanothus purpureus Jepson USA: California Betw. Santa Rosa and Guerneville, 8 mi. w. o... H. L. Mason 1931-3-8
Rosaceae GH: 01602766 Rubus arcticus Linnaeus USA: Alaska Nome Census Area: Rocky Point, Norton Sound. H. L. Mason 1931-7-17
GH: 01604100 Rubus chamaemorus Linnaeus USA: Alaska Nome Census Area: Rocky Point, Norton Sound. H. L. Mason 1931-7-17
Saxifragaceae GH: 01711586 Micranthes foliolosa (R. Brown) Gornall USA: Alaska Wainwright Inlet, Arctic Coast H. L. Mason 1931-8-18
GH: 01712495 Micranthes spicata (D. Don) Small USA: Alaska Nome Census Area: Rocky Point, Norton Sound H. L. Mason 1931-7-17
GH: 01619116 Saxifraga bracteata D. Don USA: Alaska Nome Census Area: St. Lawrence Island, Berin... H. L. Mason 6073 1931-6-26
GH: 01619347 Saxifraga bronchialis funstonii (Small) Hultén USA: Alaska Cape Lisburne H. L. Mason 1931-8-13
GH: 01619756 Saxifraga cespitosa sileneflora (Sternberg) Hultén USA: Alaska Nome Census Area: Port Clarence, Bering Stra... H. L. Mason 1931-7-19
GH: 01619787 Saxifraga cespitosa uniflora (R. Brown) A. E. Porsild USA: Alaska Point Hope, Arctic Coast H. L. Mason 1931-7-29
GH: 01621191 Saxifraga flagellaris Willdenow USA: Alaska Cape Lisburne H. L. Mason 1931-8-13
GH: 01621377 Saxifraga hirculus Linnaeus USA: Alaska Cape Lisburne H. L. Mason 1931-8-13
GH: 01621756 Saxifraga oppositifolia Linnaeus USA: Alaska Prince of Wales-Hyder Census Area: Dolgoi Is... H. L. Mason 6001 1931-5-24
GH: 01631181 Saxifraga rivularis Linnaeus USA: Alaska Icy Cape, Arctic Coast H. L. Mason 1931-8-16
Styracaceae GH: 00384821 Styrax redivivus (Torrey) L. C. Wheeler USA: California Pitt River H. L. Mason 5876 1931-5-9
Violaceae GH: 02147459 Viola langsdorfii Fischer ex Gingins USA: Alaska Unalaska: Dutch Harbor, Unalaska H. L. Mason 6026 1931-5-30