42 ORDER II. CKUCIFElLtt. 



2 A. A merit-ana Am. Aquatic: immersed lv!>. doubly pinnatifid with capi'lary eg 

 ments, emerged, oblong:, pinnatifld, serrate or entire; silicic ovoid, little longer that 

 the style. Lakes and rivers, Can. to Ky. July, Aug. 



20. VESICARIA, Lam. BLADDER-POD. (Lat. vesica, a bladder or 

 blister; from the inflated silicles.) Pet. entire. Si!icle globous or ovoid ; 

 inflated valves nerveless, hemispherical or convex. Seeds several in each 

 coll, sometimes margined (= o ). Flowers yellow. (See Addenda.) 



V . Short il T. & G. Lvs. elliptical, sessile, entire ; style twice as long as the glolxjus 

 s-ilicle ; seeds 2 4, not margined. Ky. rare. 



21. CAMELINA, Crantz. FALSE FLAX. (Xa/nai, dwarf, A/r<-, 

 flax.) Calyx equal at base. Pet. entire. Silicle obovate or subglobons, 

 with ventricous valves and many-seeded cells. Styles filiform, persistent. 

 Seeds oblong, striate, not margined (| o ). Flowers small, yellow. 



C. Kativa Crantz. Lvs. lanceolate, sagittate at base, snbentire; silicic obovate-pyri- 

 form, margined, tipped with the pointed style. Fields. Eur. 2f. June. 



22. 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. 

 (I) Aquatic acaulescent herbs. 



S. aqnatlca L. Shores of ponds, Me. N. H. Lvs. all radical, entire, snbnlate, ' 

 Scape 2 3', with a few minute white flowers. July. 



23. IBERIS, 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. Flowers white or purple. 



1 I. UMBELLATA. PurpU C. Herbaceous ; Ivs. lin. -lanceolate, acuminate, the lower 



ierrate ; silicles umbellate, acutely 2-lobed. <T) Eur. If. Purple. June. July. 



2 I. AMARA. Bitter C. Herbaceous ; Ivs. lanceolate, acute ; fls. finally racemed ; slli 



cles obcordate, narrowly emarginate. (T) Eng. If. White. June. July. 



3 I. ODORATA. Herbaceous ; Ivs. linear, toothed, dilated at end ; siiicle round, with 



acute, spreading lobes. (i)Alp8. If. Sweet scented. Foliage pretty. July. 



4 I. TINNATA. Lvs. pinuatifid, smooth. Eur. 1f. White, corymbed. 



5 I. SAXATILIS. Shrubby ; Ivs. linear, entire, li Enr. If. White, corymbed. 



24. C APSELLA, Vent. (Lat. capsa, a chest or box ; alluding to thv 

 fruit.) Calyx equal at base ; silicles triangular-cuneiform, obcordate, com- 

 pressed laterally ; valves carinate, not winged on the back ; septum sub- 

 linear ; style short ; seeds oo, oblong, small, | o . Fls. white. A common 

 \\ o.ed. Fig. 198. 



f. Bursa-pastdrls Msench. Shepherd's Purse. Grows everywhere. 0' l;--if 

 Root Ivs. rosulate, cut lobed ; stem leaves lance-lin. clasping-sagittate ; rac. long. 



25. LEPIDIUM, R. Br. PEPPER GRASS. (Aenr-, a scale; from the 

 resemblance of the silicle.^ Sepals ovate; petals ovate, entire; siliclee 

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



