CRUCIFEILE. XXXIII. DRABA. 



185 



has a much more loose habit than D. stellata, with longer pedi- 

 cels and longer styles. 



Chamisso's Whitlow-Grass. PI. 3 to 4 inches. 



37 D. STELLATA (Jacq. vind. 113. obs. no. 54. t, 4. f. 3.) 

 scapes 1 -leaved, pubescent; leaves oval-oblong, downy with stel- 

 late short hairs ; pedicels puberulous ; pods oblong (f. 46. j.) If. . 

 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. j3, hebecarpa (D. C. syst. 2. p. 346.) pods velvety with 

 down. 



SteWate-haired Whitlow-Grass. Fl. May, July. Clt. 1819. PL 

 1 to 3 inches. 



38 D. L*'viPES (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. I/. 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. Fl. May. PL 2 inches. 



39 D. SILIQUOSA (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. If. . 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. LA'CTEA (Adams, mem. soc. nat. mosc. 5. p. 194.) 

 scapes naked, smootli ; leaves oblong-linear, acute, very entire, 

 pilose ; pods oblong-elliptic, pointed by the short style, and are 

 as well as the pedicels smooth. If. . 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. 



.A/ttt-coloured-flowered Whitlow-Grass. Fl. July. PL 2 inch. 



41 D. CALYCI'NA (Desv. jour. bot. 3. p. 185.) scapes naked, 

 smoothish, 1-flowered ; leaves oblong, narrowed at the base, 

 pilose, entire ; pods linear, smooth. If. . G. Native of Peru. 

 Petals white, oblong, a little longer than the calyx. Root long, 

 perpendicular. 



\jaxge-calyxed Whitlow-Grass. PL 2 or 3 inches. 



SECT. IV. HOLA'RGES (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.INCA'NA (Lin. spec. 897. Cham. etSchlecht. Linnaea. 1. p. 

 23.) stems numerous from the root, naked or clothed with the ves- 

 tiges of theleaves of the preceding year, usually branchedemulating 

 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. If . H. Native of the islands of Kamtschatka, 

 Unalaschka, and St. Paul. Flowers white, with emarginate petals, 

 at first corymbose, but at length racemose. Plant pubescent, 

 when young tomentose, but when in fruit it is smooth. 



Far. /3, Kamtschdtica ; plant more pubescent with starry 

 down, mixed with larger simple hairs. I/ . 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 ^ foot. 



VOL. i. PART ii. 



43 D. CONTO'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 /j, Willd. 

 spec. 3. p. 430. 



Var. f3, 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. 



Twisted-podded Whitlow-Grass. Fl. May, June. Britain. PL 

 \ to 1 foot. 



44 D. CONFU'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, FL 

 dan. t. 130. Differing from D. contorta, in the pods being ter- 

 minated by a longer style, pubescent, rarely twisted. 



Var. (3, paucijolia (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 i to 1 fc. 



45 D. CINE'REA (Adams, mem. soc. nat. mosc. 5. p. 103.) 

 stem simple, leafy, somewhat pubescent ; leaves oblong-linear, 

 entire ; pods oblong, pubescent, shorter than the pedicels. $ . 

 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. confusa, 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 to ft. 



46 D. MAGELLA'NICA (Lam. diet. 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 ^ to foot. 



47 D. ARABI V SANS (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. 



$ . H. Native of North America on rocks by river sides. In 

 NewEnglandandatlake 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-lihe Whitlow-Grass. FL May, June. PL -j foot. 



48 D. DAU'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 i foot. 



49 D. UNALASCHKIANA (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 



