212 
Greyish Treacle-Mustard. Fl. May, July. Clt. 1731. 
4 to 3 foot. 
25 E. AnprzeJoskia NUM (Bess. in litt. 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. diffùsum, Bieb. fl. taur. 2. p. 116. 
Very like E. canéscens. Floriferous branches panicled. Flowers 
yellow. Plant hoary. 
Andrzejoski’s Treacle-Mustard. Fl. May, July. Clt. 1818. 
Pl. 14 foot. 
26 E. corri 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. fi. taur. 2. p. 119. 
Flowers yellow, about the size of those of E. repandum. 
Hill Treacle-Mustard. Fl. June. Clt. 1823. Pl. 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. Cheiránthus leptophyllus, Bieb. fl. taur. 2. p. 119. 
D. C. syst. 2. p. 182. Habit of E. difùsum. Stems erect, 
branched. Flowers yellow. 
Slender-leaved Treacle-Mustard. Fl. May, July. Clt. 1820. 
Pl. 1 foot. 
28 E. Macrovia`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. Brássica Ma- 
gellánica, Gaud. Brassica. Macloviana, d’Urv. 
Maclove’s Treacle-Mustard. Pl. 1 foot. 
29 E. versrcotor (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 
of Cumana. Cheiranthus versicolor, Bieb. fl. taur. 2. p. 119. 
suppl. p. 442. D. C. syst. 2. p. 182. Cheiranthus leucdnthe- 
mus, Steph. in Willd. spec. 3..p. 521. Habit of E. leptcphil- 
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. 
Various-coloured-flowered ‘Treacle-Mustard. FI. May, June. 
Clt. 1821. Pl. 1 foot. 
30 E. Lancseoratum (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. canéscens. 
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. Hésperis, Scop. carn. ed. 2. no. 829. Erysimum, 
murale. Desf. cat. ed. 1. p. 129. Pers. ench. 2. p. 199. 
Cheiraénthus firmus, Schleich. pl. helv. E. Cheiranthus, Pers. 
ench. 2. p. 199. Perhaps many species are here joined. Flowers 
fellow. 
y Var. B, minor (D. C. syst. 1. c.) stem simple, sometimes 
branched, somewhat ascending. Cheiránthus alpinus, Lin. mant. 
Pl. 
CRUCIFERÆ. LIX. Erysimum. 
93? E. ochroleùcum ß, D. C. fl. fr. ed. 3. vol. 4. p. 658. E. 
alpìnum, Pers. ench. 2. p. 200. Flowers pale yellow. 
Lance-leaved Treacle-Mustard. Fl. May, July. Clt. 1597. 
Pl. 4 to 14 foot. 
31 E. Ru#'‘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 Rhetia. Cheiran- 
thus Rhz'ticus, Schleich. pl. helv. Horn. hort. hafn. p. 613. 
Stems clothed with forked hairs. Flowers yellow, like those of 
E. lanceolatum. 
Rhetian Treacle-Mustard. Fl. May, Jul. Clt. 1819. Pl. 1 ft. 
32 E. pu‘sium (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 dùbius, 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. canéscens. 
Doubtful Treacle-Mustard. FI. May, June. 
1 to 1} foot. 
33 E. tonerro tum (D. C. syst. 2. p. 504.) leaves linear-lan- 
ceolate, elongated, a little toothed: petals obovate-oblong ; pods 
erect, pubescent; style longish. %.H. Native of Algiers in 
the fissures of rocks. E. grandifldrum, Desf. atl. 2. p. 88. 
Leaves 4 or 6 inches long. Flower large, yellow. | 
Long-leaved Treacle-Mustard. Fl. May, Jul. Clt. 1822. Pl. 
4tolfoot. . 
34 E. cra‘cite (D.C. syst. 2. p. 504.) leaves linear-lanceolate, 
toothed, pointed; petals obovate-oblong; pods erect, rather 
rough from stellate hairs; style hardly any. g¢.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 8-parted hairs. Flowers yellow, about the 
size of those of Æ. canéscens ; claws of petals length of calyx. 
Slender Treacle-Mustard. Fl. May, July. Clt. 1824. Pl. 
1 to 14 foot. 
35 E. ricrpum (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`srum (D. C. syst. 2. p. 505.) leaves linear-lanceo- 
Jate, 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. 4 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. Cheirdnthus 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. Pl. 3 ft. 
38 E. srrico sum (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. Aft. 
39 E. Repo’wsxr (Weinm. cat. hort. vom Isto, i 65.) 
leaves all linear, channelled, quite entire, greyish; stem branch- 
ed, angular ; petals emarginate ; pods erectly spreading, obtuse- 
Cit. 1820. Pl. 
