-at first corymbose, but at length racemose. 
CRUCIFERZ. 
has a much more loose habit than D. stellata, with longer pedi- 
cels and longer styles. 
Chamisso’s Whitlow-Grass. Pl. 3 to 4 inches. . 
37 D. sTELLA ta (Jacq. vind. 113. obs. no. 54. t. 4. f. 3.) 
scapes l-leaved, pubescent ; leaves oval-oblong, downy with stel- 
late short hairs ; pedicels puberulous ; pods oblong (f. 46.7.) XY. 
H. Native in fissures of rocks in very high places exposed to the 
sun, in the Pyrenees; also in the same sort of places in the Alps 
of Provence, Dauphiny, Piedmont, Savoy, Switzerland, Austria, 
Salzburg, Styria, Transylvania, &c. &c. Deless. icon. sel. 2. 
t.46. f. B. D. hirta, Jacq. austr. t. 432. D. Austriaca, Crantz. 
austr. p. 12. t. 1. f. 4. Flowers very small and white. Pods 
oblong, usually very smooth. 
Var. B, hebecárpa (D. C. syst. 2. p. 346.) pods velvety with 
down. 
Stellate-haired Whitlow-Grass. Fl. May, July. Clt. 1819. Pl. 
1 to 3 inches. 
38 D. te virzs (D.C. syst. 2. p. 346.) scapes naked, or bear- 
ing 1 leaf, pubescent; leaves ovate, downy with short stellate 
hairs ; pods elongated, linear, and are as well as the pedicels very 
smooth. X4. H. Native of the Pyrenees on rocks. Deless. 
icon. sel. 2, t. 46. f. A. Very like the two preceding plants. 
` Smooth-pedicelled Whitlow-Grass. F1. May. Pl. 2 inches. 
39 D. sitiaudsa (Bieb. fl. taur. 2. p. 94. suppl. p. 428.) 
scapes 2-leaved, somewhat pubescent; leaves linear-lanceolate, 
somewhat toothed, villous with branched hairs ; pods linear, and 
are as well as pedicels smooth. 2. H. Native of the Alps 
of Caucasus. Petals white, oblong, hardly emarginate. Pods 
linear. 
Long-podded Whitlow:Grass, Fl. May, July. Pl. 2 inches. 
40 D. ta’crea (Adams, mem. soc. nat. mosc. 5. p. 194.) 
scapes naked, smooth; leaves oblong-linear, acute, very entire, 
pilose ; pods oblong-elliptic, pointed by the short style, and are 
as well as the pedicels smooth. Y.H. Native of the north of 
Siberia on the shores of the Arctic sea, about the mouth of the 
river Lena. Petals cream-coloured, with short claws. 
Milk-coloured-flowered Whitlow-Grass. Fl. July. Pl. 2 inch. 
41 D. catycr'na (Desv. jour. bot. 3. p. 185.) scapes naked, 
smoothish, 1-flowered; leaves oblong, narrowed at the hase, 
pilose, entire ; pods linear, smooth, Y.G. Native of Peru. 
Petals white, oblong, a little longer than the calyx. Root long, 
perpendicular. 
Large-calyxed Whitlow-Grass. Pl. 2 or 3 inches. 
Sect. IV. Hora’rces (meaning unknown.) D. C. syst. 2. p. 
348. prod. 1. p. 170. Plants annual or biennial. Style short. 
Flowers white, very rarely yellow. 
42 D.1nca‘na (Lin. spec. 897. Cham. et Schlecht. Linnza. 1. p. 
25.) stems numerous from the root, naked or clothed with the ves- 
tiges of the leaves of the preceding year, usually branched emulating 
stolons, terminated in a tuft of leaves at the top, from which the 
floriferous branches emerge ; leaves elliptical, quite entire, rarely 
toothed, tapering into the petiole; cauline leaves ovate, acute, 
toothed ; pods elliptical, acute at both ends, beset with simple or 
branched hairs. 2. H. Native of the islands of Kamtschatka, 
Unalaschka, and St. Paul. Flowers white, with emarginate petals, 
Plant pubescent, 
when young tomentose, but when in fruit it is smooth. 
Var. B, Kamtschdtica; plant more pubescent with starry 
down, mixed with larger simple hairs. 2/. H. Native of Kamt- 
schatka. _ Plant more slender and more tufted. Pods narrower. 
Seeds elliptical, not acute. 
Var. y, Redowskiana ; plant slender, clothed with dense cine- 
reous pubescence ; siliques densely-pubescent, twisted ; peduncles 
length of pods ; stigma 2-lobed. 
Hoary Whitlow-Grass, Pl. 4 foot. 
VOL, I.—PART II. 
XXXIII. Drasa. 185 
43 D. conro’rta (Ehrh. beitr. 7. p. 155.) stem leafy, branch-. 
ed, velvety with stellate down ; leaves ovate, toothed, hoary ; pods 
oblong, smooth, somewhat twisted. &.H. Native of Britain 
on Alpine limestone rocks, particularly on the summits of moun- 
tains in Wales, Westmoreland, and Scotland; upon the top of 
Ingleborough, Yorkshire ; upon Ben Lawers, Loch-na-gair, and 
Cairn-gorm, Scotland ; on heaths on the east coast of Sunderland 
near Wilk-house ; also in the Pyrenees, Caucasus, Greenland, 
Unalaschka, and Labrador. D. incana, Smith, engl. bot. t. 388. 
Flowers white; petals bluntly emarginate. D. incana 8, Willd. 
spec. 3. p. 430. 
Var. B, linearifolia (D. C. syst. 2. p. 348.) stem much 
branched ; leaves linear, hardly toothed ; pods a little longer than 
those of the species. &. H. Native of Greenland. Perhaps a, 
proper species. 
Tristed-podded Whitlow-Grass. Fl. May, June. Britain. PI. 
l to 1 foot. 
44 D. conru‘sa (Ehrh. beitr. 7. p. 155.) stem leafy, some- 
what branched, velvety with short stellate down; leaves oblong, 
somewhat toothed, hoary ; pods oblong, pubescent, longer than 
the pedicels. ¢.H. Native of Norway, Finmark, Sweden, Val- 
lais, also on the Caucasian Alp called Schahdagh, and on the 
Altaian mountains, in dry fields and on hills. D. incana, FI. 
dan. t. 130. Differing from D. contorta, in the pods being ter- 
minated by a longer style, pubescent, rarely twisted. 
Var. B, paucifolia (D. C. syst. 2. p. 348.) leaves fewer on the 
stem. ¢.H. Native of Kamtschatka and Labrador. 
Confused Whitlow-Grass. Fl. May, July. Clt.? Pl. 4to1 ft. 
45 D. crne’rea (Adams, mem. soc. nat. mose. 5. p. 103.) 
stem simple, leafy, somewhat pubescent; leaves oblong-linear, 
entire ; pods oblong, pubescent, shorter than the pedicels. 8. 
H. Native of sterile mountainous places in the north of Siberia, 
at the mouth of the river Dschulamda in the Lena, near the town 
called Schigansk or Sayansk. Very like D. confisa, but differ- 
ing in the stem being more lax and weaker, and less leafy. Stem 
leaves 5 or 6 entire, scattered. 
Cinereous Whitlow-Grass. Fl. Ju. July. Clt. 1820. Pl. 4 to4 ft. 
46 D. Macetta’nica (Lam. dict. 2. p. 328.) stem simple, 
leafy, velvety ; leaves oblong, entire ; pods oblong, velvety, longer 
than the pedicels. &. H. Native of the Straits of Magellan 
at the edges of mountain woods. Nearly allied to D. confusa, 
but differing in the stem being simple, not branched, and in the 
leaves being entire, not toothed. Flowers white. 
Magellan Whitlow-Grass. Fl. Aug. Dec. Pl. 4 to 3 foot. 
47 D. arasrsans (Mich. fl. bor. amer. 2. p. 28.) stem leafy, 
somewhat branched, and rather pubescent; leaves lanceolate, 
acute, toothed; pods linear, smooth, longer than the pedicels. 
é.H. Native of North America on rocks by river sides. In 
New Englandand atlake Champlain. Draba A’rabis, Pers. Habit 
of A’rabis. Pods erect, twisted, pointed by the style, about 5 
lines long. A tufted plant, with short sterile stems, and elon- 
gated, flowering ones. Flowers white. 
Arabis-like Whitlow-Grass. Fl. May, June. Pl. 4 foot. 
48 D. Dav’rica (D. C. syst. 2. p. 350.) stem leafy, branched, 
somewhat pubescent; leaves ovate, toothed, pubescent; pods 
oblong, smooth, longer than the pedicels. &. H. Native of 
Dauria in the mountains, called Yablonoi Chrebet. Petals white, 
somewhat emarginate, narrowed at the base, twice the length of 
the calyx. Stigma capitellate. 
Daurian Whitlow-Grass. Fl. May, Ju. Clt. 1824. Pl. 4 foot. 
49 D. Unatascuxia'na (D. C. syst. 2. p. 350.) stem leafy, 
simple, pubescent; leaves ovate-oblong, entire, pubescent ; pods 
oblong, hairy. &. H. Native of the island of Unalaschka. 
Petals obovate, emarginate, twice the length of the calyx. 
Flowers 4 or 6, disposed in a racemose-corymb. Stems rather 
decumbent. 
Bb 
