210 CRUCIFERZ. 
Calyx closed. Cotyledons flat, oblong. Herbs biennial or peren- 
nial, rarely suffrutescent at the base, usually branched, sometimes 
smooth, sometimes pubescent or hairy. Leaves variable, usually 
oblong-linear, entire, or toothed, stalked, sessile, or as in Corin- 
gia, cordate, stem-clasping. Racemes elongated, terminal, many- 
flowered ; pedicels filiform, bractless. Flowers yellow, rarely 
cream-coloured or whitish, 
Secr. I. Srytonema (from orvdoc, stylos, a column or style, 
` ynpa, nema, a thread; style filiform). D. C. syst. 2. p. 491. 
prod. 1. p. 196. Style long, filiform; stigmas 2, spreading 
(f. 46. q.). Calyx almost permanent. Flowers nearly sessile. 
1 E. stticuto sum (D. C. syst. 3. p. 491.) pods shorter than 
the style, younger pods covered with the permanent calyx; 
flowers on short pedicels; leaves linear, quite entire. ¢.H. 
Native of the desert of Cumana in Tauria and about Astracan. 
Cheiranthus siliculosus, Bieb. fl. taur. 2. p. 121. suppl. 443. 
Syrénia siliculdsa, Andrz. cruc. ined. Deless. icon. sel. 2. t. 65. 
Flowers yellow. Siliques hoary. Plant canescent. 
Silicled Treacle-Mustard. Fl. May, June. Pl. 1 to 2 feet. 
2 E. Si’cutum (Spreng. new. entd. 3. p. 51.) pods shorter 
than the style, prismatic, hoary, also the adult ones are covered 
with the permanent calyx ; flowers on short pedicels ; leaves 
linear,.smoothish. ¢.H. Native of Sicily. Flowers yellow. 
Sicilian Treacle-Mustard. Fl. Ju. Jul. Clt. 1824. Pl. 1 ft. 
3 E. sEssILIFLORUM (R. Br. in hort. kew. ed. 2. vol. 4. p. 116.) 
pods length of style, younger ones covered by the permanent 
calyx ; flowers sessile ; leaves linear, entire. Y%.H. Native 
of the salt deserts and mountains of Siberia, and of Tauria, 
also of Caucasus. Cheiranthus quadrangularis, Lher. stirp. 1. 
p. 91. t. 44. Cheiranthus montanus, Pall. itin. 1. p. 496. no. 
115. Cheir. cornutus, Lam. dict. 2. p. 717. Erysimum cor- 
nùtum, Pers. ench. 2. p. 200. Cheir. angulatus, Schultz. 
obs. p. 129. Syrènia Lamárckii, Andrz. cruc. ined. Stems at 
base suffrutescent. Flowers sulphur-coloured, sweet-scented. 
The stems, younger leaves, and calyx are whitish-grey. 
Sessile-flowered Treacle-Mustard. Fl. Ju. July. Clt. 1794. 
P]. 1 to2 feet. 
4 E. ancustiro LIUM (Ehrh. beitr. 7. p. 155.) pods much 
longer than the style, younger ones covered with the permanent 
calyx ; flowers almost sessile; leaves linear, entire. &. H. 
Native of Hungary and Transylvania in dry sandy plains. 
Walds. et Kit. hung. 1. p. 101. t. 98. Cheiránthus virgatus, 
Poir. suppl. 2. p. 781. Syrènia Ehrarti, Andrz. cruc. ined. 
Cheirínia angustifòlia, Link. enum. 2. p. 170. Flowers very like 
those of E. sessiliflorum, but a little smaller. Plant canescent. 
Narrow-leaved Treacle-Mustard. Fl, June, Aug. Clt. 1800. 
Pl. 3 to 2 feet. 
Sect. II. Cusprpa‘rra (from cuspis, a point; style). D.C. 
syst. 2. p. 493. prod. 1. p.197. Style filiform, short. Silique 
tetragonal, 2-edged. Calyx falling off with the petals. Flowers 
on short but distinct pedicels. 
5 E. cuspipa‘tum (D. C. syst. 2. p. 493.) pods thrice the 
length of the style, 2-edged, naked ; flowers on short pedicels ; 
leaves oblong-lanceolate, sinuately toothed. &. H. Native of 
Bithynia, Moldavia, Sicily, Tauria, Caucasus, and in Iberia near 
Tiflis. Cheiranthus cuspidatus, Bieb. fl. taur. 2. p. 120. 
suppl. 443. Cheiranthus Bithynicus, Pers. ench. 2. p. 200. 
Syrénia Biebersteinii, Andrz. cruc. ined.—Buxb. cent. 2. p. 23. 
t. 33. f. 1. E. glabrum, Presl. ex Spreng. Sinapis tetraédra, 
Presl. The cultivated plants are almost smooth, while the spon- 
taneous ones are rather grey, especially on the stem, with ap- 
pressed hairs, which are fixed by the centre, hence they are 
2-parted. Flowers yellow. Seed ovate, obliquely truncate at 
the top on both sides, 
LIX. ERYSIMUM. 
Cuspidate-podded Treacle-Mustard. Fl. May, June. Clit. 
1800. Pl. 1 to 2 feet. 
6 E. rupvr’stre (D. C. syst. 2. p. 494.) leaves somewhat 
toothed, radical ones spatulate, cauline ones oblong, all pubes- 
cent with 2 or 3-parted hairs; stem suffruticose; length of the 
style exceeding the breadth of the pod. 4. k. H. Native of 
Bithynia on Mount Olympus. Cheirdnthus rupéstris. Smith, 
fl. grzec. t.633. A tufted suffruticose, branched plant. Flowers 
yellow, few, size of those of E. cuspidata. 
Rock Treacle-Mustard. Fl. May, June. PI. 1 foot. 
Secr. III. Erysra’strum (altered from Erysimum). D.C. 
syst. 2. p. 494. prod. 1. p. 197. Style short, or scarcely any. 
Siliques 4-sided. (f. 46. q.) Calyx deciduous. Leaves not cordate, 
nor stem-clasping. Flowers distinctly pedicelled. 
7 E. reprostytum (D. C. syst. 2. p. 494.) leaves lanceolate, 
remotely toothed, pubescent with 3 or 4-parted hairs ; branches 
few, rather upright; petals somewhat orbicular ; pods erect ; 
style filiform. ¢.H. Native on the bank of the Lower Tanais, 
about Charkovia, and on the sides of a mountain called Besch- 
tau, in Caucasus. Cheirdnthus grandiflorus, Bieb. fl. taur. 2. p. 
117. suppl. p. 441, but not of Desf. Stem erect, sparingly 
branched. Flowers yellow. ‘Plant hoary. 
Slender-styled Treacle-Mustard. Fl. May, July. Clt. 1827. 
Pl. 14 foot. 
8 E. exarra’tum (Andrz. in Bess. enum cont. 2. no. 1554.) 
canescent, scabrous; leaves linear-lanceolate, narrowed at each 
end, spreading, remotely denticulated ; pods erectly spreading ; 
outer glands of receptacle 2-horned. ¢. H. Native of Podolia. 
Very like Z. leptéstylum. Flowers yellow. 
Exalted Treacle-Mustard. Fl. May, June. Clt. 1824. Pl. 2 ft. 
9 E. surrruticdsum (Spreng. nov. prov. p. 17. no. 36.) 
stem suffruticose at the base ; leaves lanceolate, entire, pubes- 
cent from 2-parted hairs; pods erect; length of style exceeding 
the breadth a little. h.H. Native —? Cheiranthus fruti- 
cosus, Lher. herb. Stem branching much from the base. 
Flowers at first corymbose, about a quarter the size of those of 
Cheiranthus Cheiri, pale yellow, or almost citron coloured. Plant 
very like Cheirdnthus Cheiri. 
Suffruticose Treacle-Mustard. Fl. April, May. Clt. 1822. 
Pl. 1 to 14 foot. 
10 S. opora‘tum (Ehrh. beitr. 7; p. 157.) stem branched ; 
leaves lanceolate, deeply toothed, scabrous, with 3-parted hairs ; 
claws of petals about equal in length to the calyx; siliques 
straight, elongated, crowned by a 2-lobed stigma. &. H. Na- 
tive of Hungary and Volhynia. S. strictum, var. 3, odoratum, 
D. C. prod. 1. p. 197. Flowers yellow, sweet scented. 
Sweet-scented Treacle-Mustard. Fl. July. Clt. 1795. Pl 
1 to 2 feet. 
11 E. rosu’stum (D. Don, prod. fl. nep. 202.) leaves lan- 
ceolate, mucronulate, toothed, tapering to the base, silky on both 
surfaces ; siliques ascendant, puberulous, 5-times longer than the 
pedicel; stem angular, silky, branched. &. H. Native of 
Gosaingsthan. Stem stiff, heptagonal. Pedicels tetragonal. 
Flowers yellow. Stigma broad. Siliques tetragonal. 
Robust Treacle-Mustard. Pl. 2 feet. 
12 E. srrictrum (Geert. fl. wetter. 2. p. 451. no. 836.) leaves 
lanceolate, toothed, pubescent from 3-parted hairs; stem up- 
right; pods erect; style very short, stigma 2-lobed. &. H. 
Native of Volhynia, Transylvania, Austria, and Dauphiny, in gra- 
velly fields. E. Pannénicum, Crantz. aust. 28. E. hieracifolium, 
Jacq. aust. t. 73. E. odoratum, Willd. spec. 3. p- 512. Chei- 
rinia stricta, Link, enum. 2. p. 170. Stems 1 or 2 from the 
same root. Flowers yellow. 
Straight-stemmed Treacle-Mustard. Fl. Jun. Aug. Clt. 1795. 
Pl. 1 to 2 feet. 
