Okdeb 13.— OETJOIFEE-ii!. 239 



high. Lva. 1 — 2' by 1 — 3", acute, tapering at base into a petiole, upper ones 

 sessile, lower pinnatifidly cut. Fls. and silicles very numerous, in a panicle of 

 racemes. Pis. very small, mostly diandrous; silicles IJ" diam., with a notch at 

 the end. Taste pungent, like that of the garden peppergrass. jn. — Oct. 



2 L. niderile L. Oavline Ivs., incised, those of the branches linear, entire ; fia- 

 apeiahus, and with but two stamens ; silicles broadly oval, emarginate, wingless.- 

 Dry fields, Mich., Ind., Mo. St. 10—15' high, diffiisedly branched. Rac. many. 

 Fls. remarkable for wanting the petals, which are always present in our other 

 species. 



3 Ij. camp^stre R. Br. Tellow-sbkd. Oaiiline Ivs. sagiUaie, deniiculaie ; silicles 

 ovate, emarginate, scaly, punctate. — ® In waste places and dry fields, especially 

 among flax. St. strictly erect, round, minutely downy, 6 — 10' high, branching. 

 Lvs. 1' long, \ as wide, with two lobes at base, upper one clasping the stem, all 

 minutely velvety. Pis. small. Silicles IJ" long, numerous, in long racemes. 

 Jn., Jl. § Eur. 



4 L. sativum L. Peppeegeass. Lvs. variously divided and cut; branches without 

 spines ; silicles broadly oval, winged. — ^J) Native of the East. Sts. 1 — 3f high, 

 very branching. Silicles 2 — 3" broad, very numerous. A well known garden 

 salad. Jl. X § 



27. SENEBIERA, Poir. Carpet Cress. Swine Cress. (In honor 

 of Senebier, a distinguished vegetable physiologist.) Silicic didymous, 

 with the partition very narrow ; valves ventricous, separating but 

 indehisoent, and each 1-seeded, cotyledons incumbently folded on them- 

 selves. — 3) or @ Prostrate and diffuse, with minute white fls. 



1 S. didyma Pers. ira. pinnate, with pinnatifid segments; silicles rugously reticu- 

 lated, notched at the apex. — Waste places and waysides, southern States, commoa. 

 Sts. spreading circularly like the carpet weed (Molugo), flat on the ground. Lvs. 

 1 — 3' long, oblong in outline, its lobes obtuse, and cleft mostly on the upper 

 margin. Els. minute. Silicles very small, apparently doubled, rough-wrinkled. 

 Feb.— Jn. 



2 S. coronopus DC. I/i>s. pinnate, with the segm. entire, toothed, or pinnatifid ; 

 silicles tuiercUd, not notched at apex. — "Waste grounds, Ya. and Car. (Pursh), R. Isl. 

 (Robbins). Not common. § Eur. 



28. ISATIS, L. Woad. (Gr. ladi^u, to make equal ; supposed to 

 remove roughness from the stin.) Silicle elliptical, flat, l-celled (dis- 

 sepiment obliterated), 1-seeded, with carinate, boat-shaped valves, which 

 are scarcely dehiscent (0||). None of the species are N. American. 



I. tinotdria L. Silicles cuneate, acuminate at base, somewhat spatulate at the 

 end, very obtuse, 3 times as long as broad. — ® The Woad is native of England. 

 It is occasionally cultivated for the sake of its leaves, which yield a dye that 

 may be substituted for Indigo. The plant grows about 4f high, with large 

 leaves clasping the stem with their broad bases. Fls. yeUow, large, in terminal 

 racemes. May — Jl. if. 



29. CAKILE, Tourn. Sea Rocket. (Named from the Arabic.) 

 Silicle 2-jointed, the upper part ovate or ensiform ; seed in the upper 

 cell erect, in the lower pendulous, sometimes abortive. — (1) Maritime 

 herbs. 



C. maritima Scop. Upper joint of the silicle ensiform or ovate-eusiform. — Native 

 of the seacoast and lake shores, N. States. A smooth, succulent plant, branching 

 and procumbent, 6 — 12' long. lvs. sinuate-dentate, oblong-ensiform, caducous. 

 Fls. on short, fleshy peduncles, in terminal spikes or racemes, corymbously 

 arranged. Petals purple, obtuse at end. Silicle smooth, roundish, lower joint 

 olavate-obovate, upper with one elevated line on each side. Jl., Aug. 



