150 ANGJOSPERM^. 



Silique long, narrow, often 4-6-sided. Sds. often 1-seriate. Coty- 

 ledons incumbent. 14 gen., 195 spec. 1. Erysimum. Pis. yellow or 

 white. 0> (Di %■ 100 spec, Asia, Eur., N, Am. E. aheiranthcMes, 

 Tkeacle-Mustakd ; fls. yellow; Eur. Fig. 162. E. arkansdnum, 

 @, Qj., fls. large, yellow, showy. Ohio to 111., S. 8. Sisymbrium. 

 Ms. yellow, white. Q, (g), Q|.. 80 spec, both worlds ; weeds, except 



5. Allidria, Sauoe-alonb, used as salad ; fls. white, Eur ; and S. Mil- 

 lefolium, ev. shrub, 18' high, fls. yellow, Canaries. 3. Malcolmia. 

 O, @, fls. pink-purple, white. 20 spec, S. Eur. 4. Hfesperis, Eocket, 

 O) @, Q|., fls. purple, lilac, .white, yellow. 20 spec, Eur., Asia. 



Tribe 9. Siliele (rarely silique) large ; sds. 2-seriate. Cotyledons 

 accumbent. 18 gen., 340 spec, both worlds. 1. Cochlearia. Siliele 

 round, replum broad; fls. white. Q|.; 25 spec, Old World. C. Ar- 

 mordcia, Horseradish ; rhiz. pungent ; stem tall, Infl. profuse. Eur. 

 C. offieindle, Scurvy Grass. Siliele ribbed; Ivs. cordate. Low, 

 small, used as salad. Eur. 2. Draba. Siliele flat, oval, oblong, or 

 linear, often twisted ; fls. white or yellow. 80 spec, both worlds. 3. 

 Erdphila. 5 spec, Eur., Asia. E. werna. Whitlow Grass. 0(2), 

 fls. white; Ivs. rad. ; scapes V-Z' high, fls. racemed; siliele oval. 

 Fig. 200, B. Eur. 4. Alyssum. Siliele oval, flat, 2-4-seeded. Fls. 

 yellow, white. 90 spec , Old World. A. »reaH<im«»i, Sweet A. Fls. 

 white, honey-scented. Eur. A. saxdtile, ev. shrub, 1° high ; fls. yel-- 

 low. Hairs, Fig. 106, 6. Candia. 5. Vesicaria. Siliele orbicular, 

 usually inflated. Fls. yellow. 20 spec, both worlds. V. S/idrtii, 

 low herb. Mid. Ky. V. Lescurii, similar, but siliele flat. Mid. Tenn. 

 V. grdeUis, Tex. V. cretica, ev., Crete. 6. Luniria. Siliele large, 

 round, flat ; replum persistent, satiny, showy. Fls. purple, white, large. 

 2 spec, S. Eur. ; L. biennis, @, 4° high; L. rediviva, Q|., 3° high. 

 Tribe 10. Silique narrow, usually long ; sds. often l-seriate. Coty- 

 ledons accumbent. 23 gen., 885 spec, both worlds. 1. Anastatica 

 Hierochuntica, Rose of Jericho, Mary's Flower ; monotypic 0, 

 low, branching ; fls. small, white, spicate. Siliele short, with 2 ear-like 

 projections at top, 2-seeded. Plant hygroscopic; after fruiting, the 

 branches curl inward, forming a dry ball enclosing the silicles. Easily 

 loosened from the sands in which it grows, the plant is blown hither 

 and thither, often into the sea. When moistened, the branches un- 

 furl, the silicles open, and the sds. fall, or often sprout on the old 

 plant. Deserts, Syria, Algeria. S. Dent^ria (Cardamine). Silique 

 broad, stalk flattened ; fls. showy, purple, white, yellow ; rts. dentate ; 

 Ql, l°-2° high. 10 spec, Eur., N. Am. D. ladnidta, Ivs. laciniate, 

 N. Eng. to Ky., S. to Gulf. 3. Cardamine. ■ Silique linear, flattened ; 

 fls. white, purple. %, @, 0, 12'-18'' high; Ivs. often pinnate. 50 

 spec, chiefly Eur. C. rhomboidea, JJ . &. C pratensis, CucKoo- 

 TLOWER, Lady's Smock, Eur. 4. Arabis, Wall Cress ; near 3, 

 but Ivs. seldom divided; fls. usually white. 130 spec, both worlds. 



6. Barbar^a, Winter Cress ; silique linear, often 4-sided ; fls. yel- 

 low. 6 spec, Eur. 6. Nasturtium, Cress ; silique linear, or siliele 

 globular ; fls. yellow or white. Lvs. pinnate or pinnatifid. (g), QL, 

 usually low, spreading. Aquatic or marsh plants. 20 spec, bom 

 worlds. N. offieindle, Water C. ; creeping; fls. white. Eur. N. 

 palusire, erect, l°-3° high, fls. yellow, U. S. 7. Cheirdnthus, Wall- 

 flower. Q|. or ev. shrubs ; fls. yellow, crimson, brown-yellow, 

 white, showy. Medit. State*, Canaries. 12 spec. C. Cheiri, S. Eur. 



