ARABIS.] CRUCIFERJE. 27 



Rocks, N. Somerset and "\V. Gloucester, very rare ; fl. March-May. Perennial. 

 /Stems 5-10 in., ascending or erect. Radical Leaves ciliate, hairs forked and 

 simple ; lobes oblong or triangular, pointing upwards. Flowers rather large, 

 cream-3oloured. Pod* 1 in., 3-6 times as long as their pedicels ; valves 

 1 -nerved ; style short ; seeds oblong, slightly winged above. DISTRIB. 

 E'-irope, from Spain to Hungary. Habit of Sisymb. Thalia' na. 



3. A. hirsu'ta, Br. ; hispid, stem leafy, radical leaves subpetiolate 

 toothed, cauliue sessile or ^-amplexicaul, petals spreading white, pods 

 many slender erect. A. sagitta'ta, DC. ; Turri'tis hirsu'ta, L. 



Dry places, ascending to 2,700 ft. in Scotland ; locaHn Ireland ; Channel Islds. ; 

 fl. June-Aug. Biennial or perennial. Stems 1-2 ft., many, slender. Leaves 

 lf-3 in., obtuse or acute. Flowers small. Pods H-2 in., very many, much 

 narrower than in A. ciliata ; style short; seed-s distant, very narrowly 

 winged all round. DISTRIB. Europe, temp. Asia to the Himalaya, N. 

 America. VAR. glabra'ta, Syme ; stem and leaves glabrous or ciliated. 

 Great Aran Is , W. Ireland, and Eastbourne, Sussex. 



Sub-sp. A. CILIA'TA, Br. ; glabrous or ciliate, cauline leaves sessile, base 

 rounded, pods fewer broader, seeds closer. Rocky shores, S. Wales, "W. 

 Ireland. 



4. A. perfolia'ta, Lamfc. ; nearty glabrous, glaucous, radical leaves 

 obovate sinuate or lobed, cauline amplexicaul entire auricled, petals erect 

 pale } T ellow, pods many crowded slender erect, seeds sub-2-seriate. 

 Turri'tis gla'bra, L. 



Dry ro?ky places, local, from Perth southd.; Ireland, Antrim only ; fl. May- 

 July. Annual or biennial. Stem 2-3 ft., erect, with few spreading hairs 

 about the early withering root-leaves, &c. Pods 1-2 in. ; pedicel slender ; 

 style very short; seeds minute, oblong, angled, not winged. DISTRIB. 

 Europe (Arctic), temp. Asia to the Himalaya, N. America. 



A. TURIU'TA, L. j stellately pubescent, leaves remotely toothed, radical 

 petioled entire, cauline narrow oblong amplexicaul, flowers bracteate, 

 petals obovate-lanceolate spreading, pods large long secund decurved. 

 Naturalized on castle walls, Cleish, Kinross-shire, &c. ; fl. May-July, Peren- 

 nial. Stem 1-2 ft., rather robust, leafy. Radical leaves on barren branches 

 of the rootstock. Flowers pale yellow. Pods 3-6 in. ; valves thick, veined ; 

 seeds oblong, winged. DISTRIB. Central and S. Europe. 



5. CARDAMI'NE, L. BlTTEH-CHESS. 



Annual or perennial herbs, usually glabrous. Leaves usually pinnate. 

 Flowers white cream-coloured or purple. Sepals equal at the base. 

 Petals clawed, rarely 0. Pods elongate, linear, compressed ; valves flat, 

 indistinctly nerved, elastic ; stigma small. Seeds compressed, not mar- 

 gined, funicle filiform ; radicle accumbent. DISTRIB. Temp, and cold 

 regions, rarely tropical ; species 50. ETYM. /cap5a//oi>, a kind of cress. 



1. C. hirsu'ta, L. ; radical leaves pinnate, leaflets broad petioled 

 auricles 0, cauline narrower, petals small erect oblong-lanceolate, anthers 

 yellow, pods erect. 



