228 ORDER XIIL CRUCIFER^. 



turn, sometimes 1-celled; cells 1 -seeded ; seeds globose-trique- 

 trous. Herbaceous plants with small white flowers 



1. C. Did'vma, (Pureh.) Stem branching, lying flat on the earth. 

 Leaves alternate, sessile, pinnately divided; the lobes 3 — 4-parted, 

 toothed or incised, mucronate. Flowers in small corymbs, opposite the 

 leaves ; but by the elongation of the rachis, the fruit is in racemes. 

 Calyx 4-leaved. Petals none, or very minute. Silicic emarginate. — 

 White. or $ . February — June. Open, dry fields. Common. 



2. C. Ruel'lii, (Pursh.) Resembles the preceding, and grows with it. 

 Leaves pinnately divided ; segments entire, toothed, or pinnatifid. 

 Flowers few. Style prominent. Silicle entire, not emarginate. 



Gen its XIV.— LEPID'ITJM. L. 14— 1. {Wild Pepper-grass.) 

 (From the Greek lepis, a scale, in allusion to the form of the pods.) 



Silicle cordate, emarginate, 2-seeded ; valves keeled. Seeds 

 compressed. 



1. L. Virgin'icum, (L.) Ste7)i herbaceous, branching generally, leafy, 

 glabrous. Leaves alternate, sessile, ciliate, notched ; upper ones smaller 

 and nearly entire. Flowers in terminal racemes. Sepals lanceolate, 

 membranaceous along the margin, pubescent on the back. Petals a 

 little longer than the sepals. Silicle compressed, orbicular, slightly 

 emarginate. — White. 0. Through the summer. Common. 



Genus XV— CAPSEL'LA. Vent. 14—1. {Thlaspi, L.) 

 (The diminutive of capsula, a little capsule.) 



Silicle triangular, cuneiform ; valves boat-shaped, wingless, 

 coriaceous ; cells small, many-seeded. 



1. C. bur'sa tas'toris, (L.) Stem erect, furrowed, slightly branched. 

 Radical leaves pinnatifid, tapering at the base into a petiole; cauliue 

 haves small, entire, or with a few teeth, connate, lanceolate, pubes- 

 cent. Flowers in elongated racemes. — "White. 0. Sent to me by 

 "Win. S. Rockwell, Esq., Baldwin Co. 12 inches. 



Genus XVI.— CAK'ILE. Tourn. 14—1. 

 (An old Arabic name.) 



Silicle lanceolate, somewhat 4-angled, jointed. Seed in the 

 upper cell erect, in the lower pendulous. Annual maritime 

 herbs. 



1. C m \un i'ma, (Scop.) Stem erect, with, expanding branches. Leaves 

 alternate, oblong, cuneiform, sinuately toothed, lower ones sometimes 

 nearly lia-tatc. Flowers in terminal corymb Be racemes. Lower joint 

 of the silicle short, the upper one with a line on each side. Seed 1 in 

 each joint» .oval, glabrous. — White. April — July. On the coast. 



This plan! itesen Hon of the gardener as a culinary vegetable. It has 



ind has nlvrays been highly esteemed. Many other 

 radish b tn 

 Inatin tlnctoria yields the Woad, which yields a blue dye. Orambe marittma is the 

 sea-kale. 



