226 



Order 13.— CRUCIFER^E. 



at base, of 4 petals united into a spongy mass, cylindric, compressed, tapering 

 upward, 2-lipped. Fine for arbors, Jn., Aug.-)- 



3. CORlDALIS, DC. (Gr. name of the Fumitory, from which genus 

 this was taken.) Sepals 2, small ; petals 4, one of which is spurred at 

 the base ; stamens 6, diadelphous ; filaments united into two equal sets 

 by their broad bases, which sheath the ovary ; pod 2-valved, compress- 

 ed, many-seeded. — Lvs. cauline. Pedicels racemous, bractless. 



1 C. glauca Ph. Sts. erect; leaf-lobes obtuse- bracts minute, pods erect. — © A 

 smooth, delicate plant, in mountainous woods, Can. to N. Car., covered with a 



' glaucous bloom. Root fusiform. St. 1 — 4f high. Lfts. nearly 1' long and £ as 

 wide, cut into 3, obtuse lobes. Fls. terminal, on the nearly naked branches. 

 Cal. of 2, ovate, acuminate sepals, between which, placed crosswise, is balanced 

 the cylindrical, ringent corolla, beautifully colored with alternating shades of red 

 and yellow. Apr. — Jl. 



2 C. axirea Willd. Golden Corydalis. Sts. low, diffuse (finally ascending); 

 leaf-lobes acute; pods pendulous; bracts linear-lanceolate, dentate, as large as the 

 flower ; rac. secund, opposite the leaves and terminal. — CD In rocky shades, Can. 

 to Ga. and La. St. 8 — 12' high, with finely divided leaves. Fls. brigM yellow, 

 about half as long (4") as the torulous pods which succeed them. Apr. — JL 



4. FUMARIA, L. Fumitory. (Lat. fumus, smoke ; from its dis- 

 agreeable odor.) Sepals 2, caducous ; petals 4, unequal, one of them 

 spurred at the base ; filaments in 2 sets, each with 3 anthers ; nut 

 ovoid or globous, 1-seeded and indehiscent. — Lvs. cauline, finely dis- 

 sected. 



P. officinalis L. St. suberect, branched and spreading; lvs. bipinnate; rac. 

 loose; sep. ovate-lanceolate, acute, about as long as the globous, retuse nut. — 

 A small, handsome, smooth plant, 10 — 15' high, in sandy fields and about gar- 

 dens, introduced from Europe. Lfts. cut into segments, dilated upwards. Fls. 

 small, rose-colored, nodding, the pedicels becoming erect in fruit, and twico as long 

 as the bracts. Jl., Aug. § Eur. 



CRUCLFER^E, Ckucifers. 





620. A flower of Sinapis nlrra. 1. The stamens (4 long 

 and 2 short) and pistil. 2. Plan of the flower,— stamens 

 in 2 rows, outer row half wanting. 3. A silique, — 4. partly 

 opo«i, showing the septum with seeds attached. 5. Cross 

 section of a seed, cotyledons condnplicate (0»). 6. Cross 

 section of i seed of Capsella, the cotyledons incumbent (OB). 

 T. Section of a winpred seed of Arabia Canadensis, cotyle- 

 dons uccumbent (0=). 



Serbs with a pungent, watery juice, and alternate, exstipulate leaves, with 

 flowers cruciform, tetradynamous, generally in racemes, and bractless. Sepals 4, 

 deciduous ; petals 4, hypogynous, with long claws and spreading limbs. Stamens 

 <5, the 2 outer, opposite one3 shorter than the 4 interior. Ovary 2-carpeled, 2-celled 



