20th century illustrations

Sweetvetch (Hedysarum mackenzii) (1925)

岩黄芪属

Sweetvetch (Hedysarum mackenzii) (1925)

in North American wild flowers

Mistmaiden (Romanzoffia sitchensis) (1925)

女王椰子

Mistmaiden (Romanzoffia sitchensis) (1925)

in North American wild flowers

Columbia Clematis (flower) (Clematis columbiana) (1925)

岩铁线莲

Columbia Clematis (flower) (Clematis columbiana) (1925)

in North American wild flowers

Columbia Clematis (fruit) (Clematis columbiana) (1925)

岩铁线莲

Columbia Clematis (fruit) (Clematis columbiana) (1925)

in North American wild flowers

Lodgepole Pine (Pinus contorta murrayana) (1925)

Lodgepole Pine (Pinus contorta murrayana) (1925)

Lodgepole Pine (Pinus contorta murrayana) (1925)

in North American wild flowers

Lanceleaf Paintbrush (Castilleja lancifolia) (1925)

火焰草属

Lanceleaf Paintbrush (Castilleja lancifolia) (1925)

in North American wild flowers

White Thistle (Cirsium hookerianum) (1925)

麋鹿薊

White Thistle (Cirsium hookerianum) (1925)

in North American wild flowers

Gray Pussytoes (Antennaria howellii) (1925)

蝶须属

Gray Pussytoes (Antennaria howellii) (1925)

in North American wild flowers

Calypso (Cytherea bulbosa) (1925)

布袋兰

Calypso (Cytherea bulbosa) (1925)

in North American wild flowers

Rock Willow (Salix petrophila) (1925)

柳属

Rock Willow (Salix petrophila) (1925)

in North American wild flowers

Sweet Androsace (Androsace carinata) (1925)

旱生点地梅

Sweet Androsace (Androsace carinata) (1925)

in North American wild flowers

Bluegreen Gentian (Gentiana glauca) (1925)

龙胆目

Bluegreen Gentian (Gentiana glauca) (1925)

in North American wild flowers

Rocky Mountain Twayblade (Ophrys nephrophylla) (1925)

心叶对叶兰

Rocky Mountain Twayblade (Ophrys nephrophylla) (1925)

in North American wild flowers

Spotted Saxifrage (Saxifraga bronchialis) (1925)

刺虎耳草

Spotted Saxifrage (Saxifraga bronchialis) (1925)

in North American wild flowers

Bearberry (flower) (Arctostaphylos uva-ursi) (1925)

熊果

Bearberry (flower) (Arctostaphylos uva-ursi) (1925)

in North American wild flowers

Bearberry (fruit) (Arctostaphylos uva-ursi) (1925)

熊果

Bearberry (fruit) (Arctostaphylos uva-ursi) (1925)

in North American wild flowers

Green Pyrola (Pyrola chlorantha) (1925)

绿花鹿蹄草

Green Pyrola (Pyrola chlorantha) (1925)

in North American wild flowers

Avalanche Buttercup (Ranunculus suksdorfii) (1925)

毛茛科

Avalanche Buttercup (Ranunculus suksdorfii) (1925)

in North American wild flowers

Canada Buffaloberry (Lepargyrea canadensis) (1925)

加拿大水牛果

Canada Buffaloberry (Lepargyrea canadensis) (1925)

in North American wild flowers

Deathcamas (Zygadenus elegans) (1925)

优雅棋盘花

Deathcamas (Zygadenus elegans) (1925)

in North American wild flowers

Saskatoon (Amelanchier alnifolia) (1925)

桤叶唐棣

Saskatoon (Amelanchier alnifolia) (1925)

in North American wild flowers

Prairie Aster (Aster campestris) (1925)

Prairie Aster (Aster campestris) (1925)

Prairie Aster (Aster campestris) (1925)

in North American wild flowers

Owl-clover (Orthocarpus tenuifolius) (1925)

Owl-clover (Orthocarpus tenuifolius) (1925)

Owl-clover (Orthocarpus tenuifolius) (1925)

in North American wild flowers

Showy Oxytrope (Oxytropis splendens) (1925)

棘豆属

Showy Oxytrope (Oxytropis splendens) (1925)

in North American wild flowers

Alpine Fernleaf (Pedicularis contorta) (1925)

马先蒿属

Alpine Fernleaf (Pedicularis contorta) (1925)

in North American wild flowers

Pussy Willow (Salix discolor) (1925)

褪色柳

Pussy Willow (Salix discolor) (1925)

in North American wild flowers

Bloodroot (Sanguinaria canadensis) (1925)

血根草

Bloodroot (Sanguinaria canadensis) (1925)

in North American wild flowers

Pyxie (Pyxidanthera barbulata) (1925)

岩樱

Pyxie (Pyxidanthera barbulata) (1925)

in North American wild flowers

Hepatica (Hepatica americana) (1925)

圓葉獐耳細辛

Hepatica (Hepatica americana) (1925)

in North American wild flowers

Trailing-arbutus (Epigaea repens) (1925)

岩梨

Trailing-arbutus (Epigaea repens) (1925)

in North American wild flowers

Canada Wildginger (Asarum canadense) (1925)

细辛属

Canada Wildginger (Asarum canadense) (1925)

in North American wild flowers

Pinxterbloom (Azalea nudiflora) (1925)

杜鹃花科

Pinxterbloom (Azalea nudiflora) (1925)

in North American wild flowers

Wild Calla (Calla palustris) (1925)

Wild Calla (Calla palustris) (1925)

Wild Calla (Calla palustris) (1925)

in North American wild flowers

Chickasaw Plum (Prunus angustifolia) (1925)

窄叶李(奇克索李)

Chickasaw Plum (Prunus angustifolia) (1925)

in North American wild flowers

Grass-pink Orchid (Limodorum tuberosum) (1925)

布袋兰

Grass-pink Orchid (Limodorum tuberosum) (1925)

in North American wild flowers

Deerberry (Polycodium stamineum) (1925)

鹿莓

Deerberry (Polycodium stamineum) (1925)

in North American wild flowers

Bog Kalmia (Kalmia polifolia) (1925)

小葉山月桂

Bog Kalmia (Kalmia polifolia) (1925)

in North American wild flowers

Painted Trillium (Trillium undulatum) (1925)

彩绘延龄草

Painted Trillium (Trillium undulatum) (1925)

in North American wild flowers

Fringed Polygala (Polygala paucifolia) (1925)

豆目

Fringed Polygala (Polygala paucifolia) (1925)

in North American wild flowers

Squirrelcorn (Bikukulla canadensis) (1925)

Squirrelcorn (Bikukulla canadensis) (1925)

in North American wild flowers

Red Maple (Acer rubrum) (1925)

美国红枫

Red Maple (Acer rubrum) (1925)

in North American wild flowers

Carolina Maple (Acer carolinianum) (1925)

无患子科

Carolina Maple (Acer carolinianum) (1925)

in North American wild flowers

Longleaf Pine (Pinus palustris) (1925)

长叶松

Longleaf Pine (Pinus palustris) (1925)

in North American wild flowers

Fringetree (Chionanthus virginica) (1925)

流苏树属

Fringetree (Chionanthus virginica) (1925)

in North American wild flowers

American Columbine (Aquilegia canadensis) (1925)

加拿大耧斗菜

American Columbine (Aquilegia canadensis) (1925)

in North American wild flowers

Southern Coast Violet (Viola septemloba) (1925)

金虎尾目

Southern Coast Violet (Viola septemloba) (1925)

in North American wild flowers

Mayapple (Podophyllum peltatum) (1925)

北美鬼臼

Mayapple (Podophyllum peltatum) (1925)

in North American wild flowers

Wood Merrybells (Uvularia perfoliata) (1925)

垂铃儿属

Wood Merrybells (Uvularia perfoliata) (1925)

in North American wild flowers