ORDER 11. CRUCIFERJS. 



2 A. Americana Arn. Aquatic; immersed Ivs. doubly pinnatifld with capiMary seg 

 ments, emersed, oblong, pinnatifid, serrate or entire ; silicic ovoid, little longer that 

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



20. VESICARIA, Lam. BLADDER-POD. (Lnt. vesica, a bladder 01 

 blister; from the inflated silicles.) Pet. entire. Silicic globous or ovoid ; 

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

 cell, sometimes margined (== c ). Flowers yellow. (See Addenda.) 

 V. Shortif T. & G. Lvs. elliptical, sessile, entire; style twice as long as the globous 

 silicle ; seeds 2 4, not margined. (T) Ky. rare. 



21. CAMELINA, Crantz. FALSE FLAX. (Xajiai, dwarf, 



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

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

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

 C. satiTa Crantz. Lvs. lanceolate, sagittate at base, subentire ; silicic obovate-pyri- 

 form, margined, tipped with the pointed style. (5) 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. 

 (D Aquatic acaulescent herbs. 



S. aquatica L. Shores of ponds, Me. N. H. Lvs. all radical, entire, subulate, 1'. 

 Scape 23', 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. Purple C. Herbaceous ; Ivs. lin. -lanceolate, acuminate, the lower 



serrate ; silicles umbellate, acutely 2-lobed. Eur. If. Purple. June, July. 



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



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



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



acute, spreading lobes. (1) Alps. If. Sweet scented. Foliage pretty. July. 



4 1. riNNATA. Lvs. piunatifid, smooth. (I) Eur. If. White, corymbed. 



5 I. SAXATILIS. Shrubby ; Ivs. linear, entire. ii Eur. If. White, corymbed. 



24. CAPSELLA, Vent, (Lat. capsa, a chest or box ; alluding to the 

 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 GO, oblong, small, || o . Fls. white. A common 

 weed. Fig. 193. 



C. Bnrsa-pastoris Miench. Shepherd's Purse. (T) Grows everywhere. 0' li---2f. 

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



25. LEPIDIUM, R. Br. PEPPER GRASS. (Aems> a scale; from the^ 

 resemblance of the silicic.) Sepals ovate ; petals ovate, entire ; silicles" 

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



