X. CRUciFER^. (Hook. f. & T, Inderson.) 129 



Sepals erect, not saccate ; pods flat, strongly nerved ; seeds 

 flattened. — Flowers white or rose ?• Arabis. 



Sepals not saccate ; pods of Arabis but hardly nerved, usually 

 acute; stamens simple. — Flowers white or purple , . . . 8. Cardamine. 



Sepals spreading, not saccate ; long stamens bent above the 



.^ middle. — A minute herb; flowers lew, purple ?9- Loxostemox. 



#«« 



Valves with horm or appendages^ 



** 





% 



Pods short, valves septate within 10. Notoceras. 



F 



Tribe IL Alysslneae. Focis short, broad. Seeds usually^ 2-seriate. 

 Cotyledons accurabeut. (Pod sometimes long and seeds l-seriate in 11, rar- 

 ^tk, and cotyledons rarely incumbent in 13, Draba. See also 2, Parrya.) , 



Pods 2'cdkdj many-seeded ; seeds compressed, often winged. 



Pods sessile; seeds l-seriate .11- Fatisetia. 



Pods 1-2'celled, '-l-many -seeded ; valves often timid; seeds 2'Seriate, rarely 

 Ringed. (Sepals never saccate ; flowers white or yellow.) 



Stamens often appendacred ; pods usually orbicular and 4-seeded. 



—Hoary herbs 12. Al¥S8CM. 



Stamens not appendaged ; pods longer than broad, many-seeded. 



Petals entire.— Hoary herbs 13. Draba. 



^Wacters of Drata but petals 2.fid . . 14. Erophila. 



^paU short, spreading. —Glabrous herbs i • . 15. Cochi^aria. 



Tribe IIL Sisymbriew. . Fods usually sessile, long, narrow. Seeds 

 ^y l-seriate (2-seriate in 19, Euirema); cotyledons straight, flat, in- 



>^^Wnaiic-lobes erect, free^ or connate in a cone, 



'W rigid, terete. Flowers white or purple 16. Malcolmia. 



Stigma capitate emarginate or sliartly 2-lobed. 



|affiens with a Iroad basal scale 17. Lepidostemox. 



^Pals erect or spreading; pod many seeded, valves 1-3-iierved; _ 



«e d« „^,1^ l-seriate -Hairs simple orb . . . . •• • 18- SisrMBRiCM. 



r* .^°"rt, erect ; pods terete, valves l-ribl>ed ; seeds usually 

 gg;7"fe.- Glabrous herbs '. 19. Eotbema. 



pais long; pods compressed.— Leaves quite entire glabrous 



g'aucons . . ^ ... 20. Conringia. 



& erect ; valv'es keekd.-IIa'irs'appre'ssed forked '. '. '■ -21. Erysimum. 



i n ""^[l^e^ect ; pods linear-lanceolate, flattened ; seeds few.— 



* neshy herb .22. Christolea. 



^^SJ\ Camelinew. Pods short or long, ^ds usually 2-seriate ; 

 y^eaons flat, incumbent. (See also 13, i)ra6a.) 



^^ '*''' large.-Tufted scapigerous herbs 23. Bbata. 



^^^&7r\ *f a»8ice». Fods short or long ; eotyledous longitudinally 

 ^«r deeply grooved. 



P^ ^'f^ copiVofe, truncate or 2-lobed. 









^ 24. Bbasstca. . 



pT K. compressed ^^ o ••'*'' * ^ ••;--" 25. Diplotaiis. 

 "odgftk^^ ^^"'pressea, seeds 2-sena e ♦ • . . • • ■■•rv> til t^ 



Kt^^'^rt.t^^gid. beaked; seeds 2-8eriate . . . - ^ -:^'^* 26. Ehuca. 



i 





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