212 



CRUCIFER^E. LIX. ERYSIMUM. 



Greyish Treacle-Mustard. Fl. May, July. Clt. 1731. PI. 

 | to | foot. 



25 E. ANDRZEJOSKIA'NUM (Bess, in lift, and D. C. syst. 2. p. 

 502.) leaves linear, channelled, somewhat toothed, greyish with 

 forked appressed hairs ; petals obovate ; claws of petals a little 

 longer than the calyx ; pods erect, twice the length of the pedicel ; 

 stigma almost sessile. $ . H. Native of Tauria and Caucasus, 

 in dry exposed fields. E. diffusum, Bieb. fl. taur. 2. p. 116. 

 Very like E. canescens. Floriferous branches panicled. Flowers 

 yellow. Plant hoary. 



Andrzejosld' s Treacle-Mustard. Fl. May, July. Clt. 1818. 

 PL 14 foot. 



26 E. COLLI NUM (Andrz. in litt. D. C. prod. 1. p. 198.)lower 

 leaves stalked, spatulate, angularly-toothed, upper ones linear- 

 lanceolate, entire, clothed with 3-parted hairs ; stem erect, some- 

 what branched ; pods rough, erect. $ . H. Native of grassy 

 hills at the river Terek, near the little town of the Cossacs 

 called Galuga. Cheiranthus collinus, Bieb. fl. taur. 2. p. 11 9. 

 Flowers yellow, about the size of those of E. repandum. 



Hill Treacle-Mustard. Fl. June. Clt. 1823. PI. 2 feet. 



27 E. LEPTOPHY'LLUM (Andrz. in litt. D. C. prod. 1. p. 198.) 

 leaves all linear-lanceolate, quite entire, hoary, scabrous ; stem 

 branched, hoary ; pods spreading, hoary. $ . H. Native of 

 dry hills in Iberia, and in rather shaded woody mountains near 

 the Aragwi. Cheiranthus leptophyllus, Bieb. fl. taur. 2. p. 119. 

 D. C. syst. 2. p. 182. Habit of E. diffusum. Stems erect, 

 branched. Flowers yellow. 



Slender-leaved Treacle-Mustard. Fl. May, July. Clt. 1820. 

 PI. 1 foot. 



28 E. MACLOVIA'NUM (Gay ex. Spreng. syst. app. p. 243.) 

 leaves lanceolate, denticulated, glaucous, bearded at the apex ; 

 calyx deciduous ; siliques very smooth, much longer than the 

 style. $ . H. Native of the Falkland Islands. Brassica Ma- 

 gellanica, Gaud. Brassica. Macloviana, d'Urv. 



Maclove's Treacle-Mustard. PL 1 foot. 



29 E. VERSI'COLOR (Andrz. in litt. D. C. prod. 1. p. 198.) 

 leaves hoary, lower ones runcinate, upper ones linear, very en- 

 tire ; branches spreading ; pods hoary, straight. $ . H. Native 

 of the north of Persia, in arid fields adjacent to Caucasus, also 

 at the river Terek, about Kisljar and Mosdok, and in the desert 

 ofCumana. Cheiranthus versicolor, Bieb. fl. taur. 2. p. 119. 

 suppl. p. 442. D. C. syst. 2. p. 182. Cheiranthus leucanthe- 

 mus, Steph. in Willd. spec. 3. p. 521. Habit of E. leptvphyl- 

 lum. Stems clothed with forked hairs, and the leaves with 

 3-parted hairs. Flowers of various colours, particularly white, 

 cream, sulphur-yellow, or deep yellow. 



Farious-coloured-fiowered Treacle-Mustard. Fl. May, June. 

 Clt. 1821. PI. 1 foot. 



30 E. LANCEOLATUM (R. Br. in hort. kew. ed. 2. vol. 4. p. 

 116.) lower leaves lanceolate, toothed, upper ones almost linear, 

 entire ; petals orbiculately-obovate ; claws of petals longer than 

 the calyx ; pods erect ; stigma almost sessile. $ . H. Native 

 on dry rocks, fields, and walls, nearly throughout the whole of 

 Europe, exclusive of Britain and Ireland. From Spain to Cau- 

 casus, and from Sicily to Sweden ; also of the north-west coast of 

 America. Flowers larger than those of E . canescens. 



Var. a, major (D. C. syst. 2. p. 502.) stem simple or branched, 

 rigid, about a foot high. Cheiranthus erysimoides, Lin. spec. 

 923. Jacq. aust. t. 74. Erysimum cheiranthoides, Crantz. aust. 

 p. 28. E. Hesperis, Scop. earn. ed. 2. no. 829. Erysimum, 

 murale. Desf. cat. ed. 1. p. 129. Pers. ench. 2. p. 199. 

 Cheiranthus firmus, Schleich. pi. helv. E. Cheiranthus, Pers. 

 ench. 2. p. 1 99. Perhaps many species are here joined. Flowers 

 yellow. 



' Far. /3, minor (D. C. syst. 1. c.) stem simple, sometimes 

 branched, somewhat ascending. Cheiranthus alpinus, Lin. mant. 



93 ? E. ochroleucum ft, D. C. fl. fr. ed. 3. vol. 4. p. 658. E. 

 alpinum, Pers. ench. 2. p. 200. Flowers pale yellow. 



Zonce-leaved Treacle-Mustard. Fl. May, July. Clt. 1597. 

 PI. | to 1| foot. 



31 E. RH^TICUM (D. C. syst. 2. p. 503.) leaves linear-lan- 

 ceolate, entire, or toothed ; stems somewhat ascendant ; claws 

 of petals longer than the calyx ; petals obovate ; pods erectish, 

 very long ; style longish. $ . H. Native of Rhaetia. Cheiran- 

 thus Rhse ticus, Schleich. pi. helv. Horn. hort. hafn. p. 613. 

 Stems clothed with forked hairs. Flowers yellow, like those of 

 E. lanceolatum. 



Rhcetian Treacle-Mustard. Fl. May, Jul. Clt. 1819. PI. 1 ft. 



32 E. DU'BIUM (D. C. syst. 2. p. 504.) leaves lanceolate, 

 toothed, narrowed at the base ; petals obovate-oblong ; pods 

 spreading; style scarcely any. $ . H. Native of ? Cheiran- 

 thus dubius, Horn. hort. hafn. suppl. p. 73. Stems covered 

 with forked hairs. Leaves smooth, or hardly pubescent. Flowers 

 yellow, not so large as those of E. canescens. 



Doubtful Treacle-Mustard. Fl. May, June. Clt. 1820. PI. 

 1 to 1 1 foot. 



33 E. LONGIFO'LIUM (D. C. syst. 2. p. 504.) leaves linear-lan- 

 ceolate, elongated, a little toothed : petals obovate-oblong ; pods 

 erect, pubescent ; style longish. If. . H. Native of Algiers in 

 the fissures of rocks. E. grandiflorum, Desf. atl. 2. p. 88. 

 Leaves 4 or 6 inches long. Flower large, yellow. 



Long-leaved Treacle-Mustard. Fl. May, Jul. Clt. 1822. PL 

 to 1 foot. 



34 E. GRA'CILE (D. C. syst. 2. p. 504.) leaves linear-lanceolate, 

 toothed, pointed ; petals obovate-oblong ; pods erect, rather 

 rough from stellate hairs ; style hardly any. $ . H. Native of 

 the north of Caucasus and in Iberia about Tiflis. Stem co- 

 vered with forked hairs, sparingly branched at the top, and 

 covered with 2 or 3-parted hairs. Flowers yellow, about the 

 size of those of E. canescens ; claws of petals length of calyx. 



Slender Treacle-Mustard. Fl. May, July. Clt. 1824. PL 

 1 to H foot. 



35 E. RI'GJDUM (D. C. syst. 2. p. 505.) leaves linear-lanceo- 

 late, acutely toothed ; pods spreading, smooth, stiff"; style hardly 

 any. (f. 46. q.) Native of the Levant. Stem much branched, 

 covered with appressed 2-parted down. Flowers yellow. Deless. 

 icon. sel. 2. t. 67. 



Rigid-podded Treacle-Mustard. PL 2 feet. 



36 E. SCA'BRUM (D. C. syst. 2.'p. 505.) leaves linear-lanceo- 

 late, lower ones blunt, somewhat toothed ; racemes short ; pods 

 erect, tuberculately scabrous ; style conical-filiform. Native 

 of Mount Lebanon. Stems and leaves grey from appressed 

 forked hairs. Flowers unknown. 



Scabrous-podded Treacle-Mustard. PL $ foot. 



37 E. A'SPERUM (D. C. syst. 2. p. 505.) leaves linear-oblong, 

 lower ones dentately-runcinate, pubescent, scabrous ; pods spread- 

 ing ; style very short. $ . H. Native of North America in 

 fields about the river Missouri. Cheiranthus asper, Nutt. gen. 

 amer. 2. p. 436. Stem and leaves greyish, with forked appressed 

 hairs. Pods 3 inches long, pubescent. Petals yellow, with white 

 claws. E. lanceolatum, Pursh. fl. amer. sept. 2. p. 436. 



Rough Treacle-Mustard. Fl. Ju. Jul. Clt. 1824. .PI. ft. 



38 E. STRIGOSUM (D. C. syst. 2. p. 506.) strigose ; leaves 

 oblong- lanceolate, quite entire or denticulated ; pods erect ; 

 stigma 2-parted, sessile. $ . H. Native of Siberia. Cheir- 

 anthus strigosus, Ledeb. in mem. acad. petersb. 5. ann. 1815. 

 p. 549. The whole plant is strigose. Flowers erect, yellow. 

 Stems solitary, furrowed. 



Strigose Treacle-Mustard. Fl. June, July. Clt. 1816. Pl.f ft. 



39 E. REDO'WSKI (Weinm. cat. hort. dorp. 1810. p. 65.) 

 leaves all linear, channelled, quite entire, greyish ; stem branch- 

 ed, angular ; petals emarginate ; pods erectly spreading, obtuse- 



