238 ORDER 13. CRUCIFERJE. 



23. SUBULARIA, L. AWLWORT. (Named in reference to the 

 linear-subulate leaves.) Silicle oval, valves turgid, cells many-seeded ; 

 stigma sessile ; cotyledons linear, curved and incumbently folded on 

 themselves. QD Aquatic acaulescent herbs. 



S. aquatica L. A small plant, growing on the muddy shores of nonds in Me. and 

 N. H. Lvs. all radical, entire, subulate, an inch in length. Scape 2 3 hign, ra- 

 oemous, with a few minute white fls. on slender pedicels, only 2" in length. Jl. 



24. 1BERIS, L. CANDYTUFT. (Most of the species are natives of 

 Iberia, now Spain.) The 2 outside petals larger than the 2 inner ; 

 silicles compressed, truncate, emarginate, the cells 1-seeded. Handsome 

 herbs from the Old World, pretty in cultivation. Fls. white or purple. 



1 I. umbellata L. Herbaceous, smooth; Ivs. linear-lanceolate, acuminate, 

 lower ones serrate, upper ones entire; silicles umbellate, acutely 2-lobed. This and 

 the following species are very popular garden annuals, very pretty in borders 

 and of very easy culture. L umbellala is from S. Europe. " St. If high. Fls. 

 purple, terminal in simple umbels, and like the rest of the genus remarkable 

 for having the 2 outer petals longer than the 2 inner ones. Jn., Jl. f 



2 I. amara L. BITTER CANDYTUFT. Herbaceous; Ivs. lanceolate, acute, some- 

 what toothed; fls. corymbed, becoming racemed; silicles obcordate, narrowly 

 emarginate. CD Native of England. St. If high. Fls. white. Jn., Jl. f 



3 I. pinnata L. Herbaceous, smooth; Ivs. pinnatifid; rac. corymbous, but 

 little elongated after flowering. CD From S. Europe. Plant If high. Fls. 

 white. Jn. Aug. f 



4 I. saxatilis L. Shrubby ; Ivs. linear, entire, somewhat flesh y, rather acute, 

 smooth or ciliate; fls. in corymbs. CD From S. Europe. Nearly If high. Fls. 

 while. Apr. Jn. f (Obs. Twenty-four species of the Iberis have been des- 

 cribed, others of which are less known, but equally ornamental with those 

 above-mentioned.) 



25. CAPSELLA, Vent. (Derived from capsa, a chest or box ; allud- 

 ing to the fruit.) Calyx equal at base ; silicles triangular-cuneiform, 

 obcordate, compressed laterally ; valves carinate, not winged on the 

 back ; septum sublinear ; style short ; seeds oo, oblong, small, 0||. 

 Fls. white. A common weed. 



C. Bursa-pastoris Msench. SHEPHERD'S PURSE. Found everywhere in fields 

 and pastures, roadsides. St. 6 8 12' high, nearly smooth in the upper part, 

 hirsute below, striate, branching. Root Ivs. rosulafe, 2 5 8' long, as wide, 

 cut lobed, OH margined petioles, segm. about 13. These leaves are sometimes 

 wanting (when the weed is crowded), or only dentate. Stem-lvs. much smaller, 

 very narrow, with 2 small, acute auricles at base, half clasping the stem. Fls. 

 small, in racemes, which are finally 3 12' long. Silicle smooth, triangular, 

 emarginate at the end, and tipped with the style. Apr. Sept. Kur. 



26. LEPIDIUM, R. Br. PEPPER GRASS. (Gr. /^nig, a scale ; from 

 the resemblance of the silicle.) Sepals ovate ; petals ovate, entire ; 

 silicles oval-orbicular, emarginate ; septum very narrow, contrary to the 

 greater diameter; valves carinate, dehiscent ; cells 1-seeded. Cotyledons 

 Oj| (in No. 1, = ). Fls. white, small, often incomplete. 



* Stamens 2 only. Petals 4. or wanting Nos. 1, 2 



* Stamens <5. Silicles winged 7 Xos. 3, 4 



1 L. Virginicum L. WILD PEPPERGRASS. TOXGUE-GRASS. Lvs. linear-lanceo- 

 late, incisely serrate, or the upper subentire petals 4 ; silicles orbicular, emarginate ; 

 cotyledons Of. <D In dry fields and roadside-s, U. S. St. rigid, round, smooth, If 



