Flora of North America species comparison

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Draba grandis

north Pacific Draba
Habit Perennials; caudex simple or branched (fleshy, with persistent leaf bases); not scapose.
Stems

(decumbent), unbranched, (0.2–)0.5–2.7(–3.7) dm, pubescent throughout, trichomes 2–4-rayed, 0.05–0.2 mm.
Basal leaves

rosulate; long-petiolate;

petiole (winged, (1–)4–15 cm), often not ciliate (or ciliate to blade apex, trichomes simple, 0.3–0.8 mm);

blade (somewhat fleshy), oblanceolate to spatulate or obovate, (1–)2–11(–17) cm × (5–)8–30(–45) mm, margins often coarsely dentate, (pubescent as petiole), surfaces usually pubescent, abaxially with stalked, 2–4-rayed trichomes, 0.05–0.25 mm, adaxially similar, or also with simple and long-stalked, 2-rayed trichomes, to 0.8 mm, rarely glabrescent, with mostly simple and 2-rayed trichomes.
Cauline leaves

2–12(–16);

sessile or petiolate;

blade oblanceolate to obovate, margins dentate or entire, surfaces pubescent as basal.
Racemes

5–26(–32)-flowered, ebracteate, elongated in fruit;

rachis not flexuous, pubescent as stem.
Flowers

sepals broadly ovate, 3–4 mm, pubescent, (trichomes simple and short-stalked, 2-rayed);

petals yellow, oblanceolate to spatulate, 4.5–7 × 1.8–3 mm;

anthers oblong, 0.7–1 mm.
Fruiting pedicels

horizontal to divaricate-ascending or ascending, usually straight, rarely curved upward, (5–)10–22(–27) mm, pubescent, trichomes 2–4-rayed (0.05–0.3 mm), sometimes with simple and spurred ones.
Fruits

oblong to lanceolate, or ovate to suborbicular, slightly twisted or plane, flattened, (6–)10–20(–25) × 4–7(–9) mm;

valves glabrous;

ovules 24–52 per ovary;

style (0.2–)0.4–1.6(–2) mm.
Seeds

ovoid, 1.4–2 × 0.8–1.2 mm.
2n

= 36.

Draba grandis
Phenology Flowering May–Jul.
Habitat Rocky bluffs above salt-water beaches, loamy seaside banks, sea bird rookeries, coastal herbaceous tundra and sandy blowouts
Elevation 0-50(-200) m (0-200(-700) ft)
Distribution
from FNA
AK; BC; e Asia (Kuril and Ratmanov islands, Russian Far East)
[BONAP county map]
Discussion

Almost all recent North American authors have used the name Draba hyperborea for this species. A. N. Berkutenko (1995) clearly showed that the type of that name belongs to an entirely different species that she placed in the genus Schivereckia Andrzejowski ex de Candolle. Draba grandis thus becomes the correct name for the North American taxon. Except for its fleshy leaves, Nesodraba is indistinguishable morphologically and molecularly from other species of Draba.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 7, p. 309.
Parent taxa Brassicaceae > tribe Arabideae > Draba
Sibling taxa
D. abajoensis, D. albertina, D. aleutica, D. alpina, D. aprica, D. arabisans, D. arctica, D. arctogena, D. argyrea, D. arida, D. asprella, D. asterophora, D. aurea, D. aureola, D. bifurcata, D. borealis, D. brachycarpa, D. brachystylis, D. breweri, D. burkei, D. californica, D. cana, D. carnosula, D. chamissonis, D. cinerea, D. corrugata, D. corymbosa, D. crassa, D. crassifolia, D. cruciata, D. cuneifolia, D. cusickii, D. cyclomorpha, D. daviesiae, D. densifolia, D. exunguiculata, D. fladnizensis, D. glabella, D. globosa, D. graminea, D. grayana, D. heilii, D. helleriana, D. hitchcockii, D. howellii, D. incana, D. incerta, D. incrassata, D. inexpectata, D. jaegeri, D. juvenilis, D. kassii, D. kluanei, D. lactea, D. lemmonii, D. lonchocarpa, D. longisquamosa, D. macounii, D. maguirei, D. malpighiacea, D. micropetala, D. mogollonica, D. monoensis, D. mulliganii, D. murrayi, D. nemorosa, D. nivalis, D. norvegica, D. novolympica, D. oblongata, D. ogilviensis, D. oligosperma, D. oreibata, D. oxycarpa, D. palanderiana, D. pauciflora, D. paucifructa, D. paysonii, D. pectinipila, D. pedicellata, D. pennellii, D. petrophila, D. pilosa, D. platycarpa, D. porsildii, D. praealta, D. pterosperma, D. ramosissima, D. ramulosa, D. rectifructa, D. reptans, D. ruaxes, D. santaquinensis, D. saxosa, D. scotteri, D. serpentina, D. sharsmithii, D. sibirica, D. sierrae, D. simmonsii, D. smithii, D. sobolifera, D. spectabilis, D. sphaerocarpa, D. sphaeroides, D. standleyi, D. stenoloba, D. stenopetala, D. streptobrachia, D. streptocarpa, D. subalpina, D. subcapitata, D. subumbellata, D. trichocarpa, D. ventosa, D. verna, D. viridis, D. weberi, D. yukonensis, D. zionensis
Synonyms Cochlearia siliquosa, Cochlearia spathulata, D. greenei, D. hatchiae, D. hyperborea var. spathulata, D. spathulata, Nesodraba grandis, Nesodraba megalocarpa, Nesodraba siliquosa
Name authority Langsdorff ex de Candolle: Syst. Nat. 2: 355. (1821)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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