2?>0 DICOTYLEDONS. — CRUCIFERX. Raphanus. 



18. CHEIRANTHUS. 

 Po^ compressed or 2-edged. Cotyledons -eiccKymhtnt. CaZ. closed; 

 opposite leaflets sacc^.te at the base. Stigma placed upon a 

 style, 2-lobed, with the lobes patent or capit.ite. 



1. Ch.fiuticulosm, leaves lanceolate acute hoary beneath, pube- 

 scence all simple ancj close pressed, stem somewhat ehiubby, 

 branches angular, p. 202. 



19. HESPERIS. 



Pod 4-sided or 2-edged. Stigma nearly sessile, with the lobes 

 conniveni. Cotyledons incumbent, plane. Cal. closed. 



1. H, matronalis, stem erect, leaves ovato-lanceolate toothed, 

 limb of the petals obovate, pods erect torulose their margins 

 simple (not incrassated). p. 202. 



20. BRASSICA. 



Tod 2-valved (with an abortive or 1 -seeded beak). Cotyledons 

 conduplicate. Cal. closed. 



1 . Br. Napus, root caulescent fusiform, leaves smootb, upper ones 

 cordato-lanceolate amplexicaul, lower ones lyrate toothed.p. 203. 



2. Br. Rnpa, root caulescent orbicular depressed fleshy, radical 

 leaves lyrate scabrous those of the stem nearly entire smooth, 

 p. 208. 



3. Br. oleracea, root caulescent rounded fleshy, all the leaves gla- 

 brous glaucous waved and lobed. p. 203. 



4. Br. Mone?iiis, leaves pinnatifid, stem nearly leafless glabrous, 

 pods smooth, beak n^.onospermous. p. 203. 



5. Br. campestris, root and stem slender, leaves cordate acuminate 

 amplexicaul lower ones lyrate dentate subhispid. p. 203. 



21.SINAPIS. 



Pod 2-valved (sometimes of 2 articulations, of which the upper 



one is valveless). Cotyledons conduplicate. Cal. patent. 



1. S. arvensis^ pods with many angles turgid and knotty longer 

 than the 2-edgcd beak, leaves ovate sublyrate. p. 204. 



2. S. alba^ pods hispid turgid shorter than the ensiform beak, 

 leaves pinnatifid. p. 20-1. 



3. S. nigra, jjods appresied glabrous tetragonous, style short su- 

 bulate, upper leaves linear-lanceolate entire glabrous, p. 204. 



4. S. tcnnifolia, pods linear glabrous shortly beaked erect, pe- 

 duncles spreading, leaves lanceolate very acute pinnatifid or 

 bipinnatifid, stem glabrous, p. 204. 



22. RAPHANUS, 



Pod valveless (torulose Sm.). Cotyledons conduplicate. Cal. 

 closed. 



