184 
of 2140 feet. Very like D. Jorullénsis. Flowers unknown. 
Pods elliptical, pointed by the short style. Trunk of root 
woody. . 
Tolucco Whitlow-Grass. PI. 4 foot. 
Sect. HI. Leucopra‘sa (from Xevxoc, leucos, white, and 
. Draba, that is to say, Draba with white flowers.) D. C. syst. 2. 
p. 342. prod. 1. p. 168. Small perennial tufted plants, with white 
flowers, and blunt or emarginate petals; leaves flaccid, not stiff. 
24 D. sorea‘us (D. C. syst. 2. p. 342.) scape hairy, bearing 
1 ovate leaf, the rest of the leaves are oblong and narrowed at 
the base, entire, velvety with branched hairs ; pods ovate. 2. 
H. Native of the island of St. Paul. Petals white, oblong- 
cuneated, twice the length of the calyx. 
Northern Whitlow Grass. PI. 4 foot. 
25 D. optonea‘ta(R. Br. in Ross’s voy. append.) scapes, naked, 
somewhat hairy with floccose down; leaves rosulate, oblong- 
linear, entire, ciliated and velvety ; pods oblong-elliptical, vel- 
vety. 4%. H. Native of North America in the polar regions, 
particularly at Baffin’s Bay. Style very short. . 
Oblong-podded Whitlow-Grass. Fl. May, June. Clt. 1820. 
Pl. + foot. . 
26 D. corymposa (R. Br. in Ross’s voy. append.) scapes 
naked, rather hispid ; leaves densely rosulate, oblong, narrowed 
at the base, ciliated, and somewhat hispid ; pods elliptical, corym- 
bose, rather hispid. X4. H. Native of the polar regions of 
North America, particularly at Baffin’s Bay. Pods elliptical ; 
Style very short, and terminated by the somewhat capitate stigma. 
Corymbose Whitlow-Grass. Fl. May, June. Clt.1820. Pl. 4ft. 
27 D. Wormsxio'Lp1 (Fisch. ex Spreng. syst. 2. p. 874.) 
leaves oblong, with one tooth on each side ; scape 1-leaved, and 
is, as well as the leaves, beset with branched pili; flowers in 
corymbs; silicles oblong, smooth. X4. H. Native in the ex- 
treme eastern parts of Siberia. Flowers white. 
Wormskiold’s Whitlow-Grass. Pl. + foot. 
28 D. murIcE'LLA (Wahl. fl. lapp. 178. no. 318. t. 11. f. 2.) 
scape naked, velvety; leaves oblong, entire, greyish-velvety 
with stellate hairs; pods oblong-lanceolate, smooth. X4. H. 
Native of Norway, Lapland, on dry hills, and perhaps on the 
western coast of North America and Labrador. D. hirta, Oeder. 
fl. dan. t. 214. D. Liljebladii of Wallm. D. nivalis, Liljebl. nov. 
act. ups. 6. p. 47. t. 2. f. 2. Flowers small, whitish. - Pods ob- 
long-lanceolate, acute at both ends, and very smooth. 
Var. B, cæ sia (Adams, in mem. soc. nat. mosce. 5. p. 268.) 
differing from the species in the flowers being sulphur-coloured, 
not whitish, and with the leaves rarely toothed. 2/.H. Native 
of the north of Siberia at the mouth of the river Lena, at the 
promontory called Bykofskoy-mys. 
Little-hispid Whitlow-Grass. Fl. May, Ju. Clt. 1825. Pl.4 ft. 
29 D. uirta (Lin. spec. 897.) scapes puberulous, bearing 
2 dentate leaves ; radical leaves oblong, nearly entire, puberu- 
lous ; pods oblong, and are, as well as the pedicels, smooth. 2%. 
H. Native of Lapland, Norway, and Greenland, on dry shaded 
-rock in the lower mountains. Wahl. fl. lapp. p. 175. no. 319. 
t. 11. f. 3. A very polymorphous plant, which is often con- 
fused with D. rupéstris. 
Var. B, apícola (Wahl. 1. c. t. 11. f. 1.) more stiff and dwarfer 
habit, and the hairs are more stellate than in the other varieties. 
yY. H. Native on the higher mountains of the above men- 
tioned countries. 
Var. y, Norvégica (Gunn. fl. norv. 2. p. 106. no. 846.) radi- 
cal leaves larger, somewhat cuneated, acute, toothed, crowded. 
y.H. Draba Pyrenaica, Oed. fl. dan. t. 143. but not of Lin. 
Native of the Alps of Norway, especially near Port Olaus. 
Var. 6, siliquòsa (Cham. et Schlecht. Linnea. 1. p. 23.) plant 
with a more lose habit; siliques longer, &. H. Native of 
CRUCIFERA. XXXIII. Draza. 
Unalaschka. Leaves broader and more toothed. Sepals beset with 
simple and forked hairs towards the apex. Siliques 9-lines long. 
Hairy Whitlow-Grass. Fl. May, July. Clt. 1817. Pl. 4 
. to 4 and even 3 foot. 
30 D. rupe’stris (R. Br. in hort. kew. ed. 2. vol. 4. p. 91.) 
scapes puberulous, naked or bearing one leaf; leaves lanceolate, 
pilose, almost entire; pods lanceolate, and are, as well as the 
pedicels, pubescent. 2/.H. Native on rocks near the summit 
of Ben Lawers in Scotland, also on rocks in the mountains of 
Norway; North America, in the Bay of St. Lawrence, also in 
the islands of Unalaschka and St. Lawrence. Draba hirta, Smith, 
fl. brit. 2. p. 677. engl. bot. t. 1338. but not of Lin. Draba stel- 
lata, With. fl. brit. 565. Pods lanceolate, hairy-pubescent with 
very short simple or forked hairs, sometimes. but very rarely 
smooth. 
Rock Whitlow-Grass. Fl. May, June. Scotland. Pl. 2 or 3 in. 
31 D. niva‘uis (Willd. spec. 3. p. 427.) scapes naked or one 
leaved, smooth; leaves oblong-linear, ciliated, and somewhat 
pilose; pods elliptic-oblong, and are, as well as pedicels, 
smooth, 4%. H. Native of Lapland, Norway, Switzerland, 
Savoy, and Dauphiny, in rocky places on the higher alps. D. 
stellata, Oed. fl. dan. t. 142. Pods elliptical-oblong, quite 
smooth. 
Snow Whitlow-Grass. Fl. April, Ju. Clt. 1820. Pl. 1 or 2 in. 
32 D. Larro'xica (Willd. herb. from Stev. obs. ined. D. C. 
syst. 2. p. 344.) scapes naked, very smooth ; leaves lanceolate, 
quite entire, rather pilose ; pods elliptical-oblong, and are as well 
as the pedicels very smooth. %. H. Native on rocks in the 
Alps of Lapland and Greenland; North America in the Bay of 
St. Lawrence. D. Androsàcea, Wahl. fl. lapp. 174. no. 317. t. 
11. f. 5. exclusive of the synonyms. D. Wahlenbérgii, Hartm. 
More loose in habit than D. nivalis. 
Lapland Whitlow-Grass. Fl. May, Ju. Clt. 1824. Pl. 2 or 3 in. 
33 D. Hetve'tica (Schleich. pl. dr. Switz. D. C. syst. 2. p- 
345.) scapes naked, very smooth; leaves lanceolate, ciliated ; 
pods oval, and are, as well as pedicels, very smooth. %. H. 
Native of Switzerland near the limits of snow on the rocky 
top of Wendigletscher about Engelberg. D. ciliaris, Wahl. helv. 
p. 122. no. 671. but not of Lin. 
Sniss Whitlow-Grass. Fl. May, July. Clt. 1819. Pl. 1 inch. 
34 D. Frapnize’nsts (Wulf. in Jacq. misc. 1. p. 147. t. 17. f. 
1.) scapes 2 or 3-leaved, smooth; leaves oblong-linear, stiffly- 
ciliated ; pods oblong, and are, as well as the pedicels, very 
smooth. .H. Native of Croatia, Carniolia, and Carinthia, 
on rocks in the higher mountains above Fladniz; also in 
Transylvania. D. Androsacea, Willd. spec. 3. p. 428. D. 
ciliata, Scop. carn. no. 787. t. 33. D. ciliaris, Hort. syn. 354. 
Flowers few, approximate ; sepals green, oval. 
Fladniz Whitlow-Grass. Fl. July. Clt. 1819. Pl. 1 inch. 
35 D. tomentosa (Clairv. herb. val. p. 217? Wahl. fl. helv. 
p. 123. no. 672. t. 3.) scape 1 or 2-leaved, velvety ; leaves 
oval-oblong, downy with short stellate-tomentum ; pedicels pubes- 
cent; pods oval, ciliated. 2. H. Native throughout the higher 
Alps of Switzerland in the chinks of dry rocks on Gemmy and 
Stockhorm ; central Pyrenees at Valley d’Aure, on the mountain 
called Penne-blanque ; also on the tops of the Carpathian moun- 
tains at the height of 6200 feet. D. dubia, Sut. Petals white, 
3 times longer than the calyx. Pods pointed by the punctiform 
stigma. D. hirta, Towns. itin. hung. 490. 
Tomentose Whitlow-Grass. Fl. May, Jul. Clt. 1819. Pl. 1-2 in. 
36 D. cHamissOn1; scapes 2-3-leaved, clothed with stiff short 
tomentum, as well as the leaves; leaves oval-oblong ; pedicels i 
usually exceeding the length of the silicle; silicles pubescent, 
acute ; stigma evidently 2-lobed. 2. H. Native of North 
America in the island of Unalaschka and the Bay of St. Lawrence. 
D. stellata, Cham. et Schlecht, Linnea. 1. p. 22. This plant 
