CRUCIFER&. X. ARABIS. 



163 



ones ovate, clasping the stem ; petals erect, linear, twice the length 

 of the calyx. $ . H. Native of Kamtschatka. Horn. hafn. 2. 

 p. 619. A. hirsuta, var. Cham, et Schlech. in Linnsea 1. p. 15. 

 Petals linear, blunt, white. Pods very upright. 



Narrow-detailed, Wall-Cress. Fl. Jul. Clt. 1826. PL ft. 



19 A. CURTISI'LIQUA (D. C. syst. 2. p. 223.) leaves oblong, 

 nearly entire, ciliated with simple hairs, radical ones drawn out 

 along the petiole ; cauline ones clasping the stem a little ; pe- 

 dicels length of calyx ; pods erect. $ . H. Native of Scania. 

 Turritis curtisiliqua, Fries ex Horn. herb. Flowers white. 



Short-podded Wall-Cress. Fl. May, Jul. Clt. 1820. Pl.fft. 



3. Sessilifblia. Stem leaves sessile; petals oblong, or linear- 

 cuneated, erect. 



20 A. ALLIO'NII (D. C. fl. fr. 4. p. C7G.) leaves smooth, ra- 

 dical ones ovate-oblong, somewhat toothed, drawn out at the 

 base, stem ones sessile, ovate, serrated ; pedicels rather longer 

 than the calyx ; pods erect, 'y. . H. Native of Piedmont in 

 humid meadows. Turritis stricta, All. auct. p. 18. T. nemo- 

 rensis, Wulf. Flowers white. Calyx pale, at last spreading a 

 little. Stem simple. 



Allioni's Wall-Cress. Fl. May, June. Clt. 1804. PI. 1 to 2 ft. 



21 A. MURA'LIS (Bertol. dec. ital. 2. p. 37.) leaves covered with 

 branched hairs, radical ones spatulate, bluntly-toothed, stem ones 

 ovate, acutely toothed ; racemes straight ; pedicels at last double 

 the length of the calyx. 1. H. Native of Etruria. Cevennes, 

 Savoy and Vallais on rocky mountains. A'rabis hiimilis, Schleich. 

 pi. helv. A tufted plant, with white flowers. Petals oblong, 



Wall-Cress. Fl. May, June. Clt. 1820. PI. i foot. 



22 A. STRI'CTA (Huds. angl. 292.) leaves ciliated-scabrous, 

 with bifid hairs, radical ones oblong, tapering to the base, some- 

 what lyrately-pinnatifid, stem ones oblong, almost entire ; racemes 

 straight ; pedicels hardly longer than the calyx ; pods elongated, 

 erect. If. . H. Native of the temperate parts of Europe on 

 calcareous rocks. In England on lime-stone rocks, particularly 

 on St. Vincent's Rocks near Bristol, and on the south side of the 

 Avon about a mile below the hot wells, but sparingly. It is also 

 said to be a native of Labrador. Smith, engl. bot. t. C14. 

 Turritis Rayi, Vill. dauph. 3. p. 326. t. 38. A. hispida, Ait. 

 hort. kew. ed. 1 . vol. 2. p. 400. but not of Lin. A. hirta, Lam. 

 diet. 1. p. 220. A. montana, Bern. A tufted plant, with white 

 flowers. 



Straight Wall-Cress. Fl. May, June. Britain. PI. \ to A ft. 



23 A. CILIA TA (R. Br. in hort. kew, ed. 2. vol. 4. p. 107.) 

 leaves somewhat toothed, smooth, ciliated, radical ones nearly 

 sessile, oval-oblong, stem ones oblong ; racemes straight ; pedi- 

 cels length of calyx. $ . H. Native of the Alps in the southern 

 parts of Europe, particularly the Pyrenees. In Ireland by the 

 sea-side at Rinville, Cunnamara, &c. Turritis alpina, Lin. syst. 

 veg. ed. 13. p. 505. Willd. spec. 3. p. 545. Smith, engl. bot. 

 t. 1746. Turritis ciliata, Willd. spec. 3. p. 544. A. Madonia, 

 Presl. Closely allied to A. stricta, but differs from it in the 

 root being biennial, not perennial. Flowers white. 



Ciliated-leaved Wall-Cress. Fl. Jul. Aug. Ireland. PL i ft. 



24 A. INCANA (Roth. cat. bot. 1. p. 79.) leaves all sessile, 

 and somewhat toothed, hoary with branched hairs, radical ones 

 obovate- oblong, stem ones oblong ; racemes erect ; pedicels at 

 least twice as long as the calyx. $ . H. Native of dry fields 

 in Switzerland and France. Turritis minor, Schleich. pi. helv. 

 Petals white, oblong, double the length of the calyx. 



Hoary Wall-Cress. Fl. May, June. Clt. 1816. PL i foot. 



25 A. THALIA'NA (Lin. spec. 926.) leaves pilose, a little 

 toothed, radical ones stalked, ovate-oblong ; stem branched ; pods 

 ascendant; pedicels much longer than the calyx. . H. Na- 

 tive of Europe from Spain to Petersburg]!, and from England to 

 Greece ; also in Tauria, Persia, Dauria, and Teneriffe. On 



walls, dry banks, cottage roofs, and dry sandy ground ; plentiful 

 in Britain. Smith, engl. bot. t. 901. Vahl. fl. dan. t. 1106. 

 Curt. lond. 2. t. 49. Schkuhr. handb. 2. t. 195. A.ramosa, Lam. 

 fl. fr. 2. p. 510. Sisym. Thalianum Monnard. Flowers white. 



Var. /J. A. parviflora, Raf. arner. month, mag. 1. p. 43. 

 1819. Jan. p. 194. Q. H. Native of North America, in dry 

 fields and on old walls, from New England to Virginia. Petals 

 emarginate, hardly longer than the calyx. A'rabis Thaliana 

 Pursh. 



Thalius's Wall-Cress. Fl. April, Jul. Britain. PI. to 1 ft. 



26 A. SERPYLLIFOLIA (Vill. dauph. 3. p. 318. t. 37.) leaves 

 almost entire, scabrous with branched hairs, radical and stem 

 ones oval, narrowed a little at the base ; racemes rather loose ; 

 pedicels length of calyx. $ . H. Native of the Alps of Pro- 

 vence, Dauphiny, Vallais, Pyrenees, on rocky parts of mountains. 

 Flowers win to 



JVild-Thyme-leaved Wall-Cress. Fl. June, Jul. Clt. 1820. PI. 

 A to f foot. 



27 A. SPATULA'TA (D. C. syst. 2. p. 227.) leaves entire, 

 rough, lower ones spatulate, narrowed into the petiole, upper 

 ones roundish, small ; racemes short ; pedicels length of calyx ; 

 pods erect. 0. H. Native of Buenos Ayres, in fields, and in 

 the suburbs of Monte- Video. Petals white, small, scarcely 

 longer than the calyx. Sisymbrium spatulatum, Poir. diet. 7. 

 p. 224. 



Spatulate-leaved Wall -Cress. Fl. Aug. PL | foot. 



28 A. ? COMMERSONII (D. C. syst. 2. p. 228.) leaves almost 

 entire, ciliated, radical ones ovate-spatulate, stalked, stem ones 

 scarcely any ; racemes short ; pedicels longer than the calyx. 

 0. ? H. Native of Buenos Ayres. Sisymbrium bellidifolium, 

 Poir. diet. 7. p. 220. Petals white, hardly longer than the calyx. 

 Seed small, brownish. 



Cornmer son's Wall-Cress. PI. \ foot. 



29 A. PUBE'SCENS (Poir. suppl. 1. p. 413.) leaves pubescent, 

 deeply-toothed, radical ones spatulately-lanceolate, narrowed into 

 the petiole, stem ones lanceolate ; pedicels very short ; pods 

 pubescent, erect. $ . ? H. Native of Algiers on the mountains. 

 Turritis pubescens, Desf. alt. 2. p. 92. t. 163. Petals linear, 

 white, double the length of the calyx. 



Pubescent Wall-Cress. Fl. May, June. PI. 1 to 2 feet. 



30 A. PA'RVULA (Dufour, in D. C. syst. 2. p. 228.) leaves 

 pubescent, a little toothed, lower ones obovate, stem ones ovate ; 

 pedicels very short ; pods pubescent, spreading a little. . H. 

 Native of Navarre and near Tudela in Spain. A. Romeriana, 

 Andrz. ined. Petals, when dry, pale yellow. 



Small Wall-Cress. PI. foot. 



4. Obovatipetila. Cauline leaves sessile or stalked; limb 

 of petals obovate or cuneated, distinct from the claw. 



31 A. PROCU'RRENS (Waldst. et Kit. hung. 2. p. 154. t. 144.) 

 leaves ovate, quite entire, smooth, ciliated with 2-parted hairs, 

 radical ones narrowed into the petiole, stem ones sessile, pointed ; 

 stolons creeping ; pods spreading. 1 . H. Native of Bosnia 

 and Servia on shaded limestone rocks. Nasturtium procurrens, 

 Andrz. ined. A creeping tufted plant. Petals white, double the 

 length of the calyx. 



Procurrent Wall-Cress. Fl. May, June. Clt. 1819. PL | foot. 



32 A. PRJE cox (Waldst. et Kit. ined. ex Willd. enum. p. 684.) 

 leaves oblong, acute, sessile, quite entire, smooth ; stem strigose ; 

 stolons creeping; pods spreading. If.. H. Native of Hungary. 

 A creeping tufted plant. Petals obovately-cuneated, white, 

 double the length of the calyx. 



Early-flowering Wall-Cress. Fl. Ap. Ju. Clt. 1819. PI. f to | ft. 



33 A. SCHIWERECKIA'NA (Andrz. in litt. D. C. prod. 1. p. 

 145.) leaves entire, scabrous with crowded branched hairs, 

 radical ones rosulate, obovate, stem ones oblong, erect, sessile ; 



Y2 



