ckucifkbjk. (mustard family.) 23 



Stemless perennial herbs, with ternately-compound and dissected leaves. Flow- 

 ers i-acemose, nodding. 



1. D. CucuUaria, DC. Ilhizoma granular, bulb-like ; scape simple, 

 4 - 10-flowered, longer tlian the (1-3) long-petioled linear-lobed leaves ; corolla 

 whitish, with two divergent, wing-like spurs, longer than the pedicel ; inner petals 

 minutely crested. — Rich woods. North Carolina and northward April. — 

 Scape 6'- 9' high. 



2. D. eximia, DC. Khizoma granular, scaly; raceme compound, many- 

 flowered, shorter than the (3-8) oblong-loted leaves; corolla rose-color, 2-gibbous 

 at the base ; inner petals conspicuously crested ; stigma 2-horned. at the apex. — 

 Mountain rocks, North Carolina and northward. June - September. — Scape 

 S'- 12' high. Bracts purplish. 



3. COEYDALIS, Vent. 



Sepals minute. Petals separate, deciduous ; one of the outer ones sac-like 

 at the base. Filaments united nearly to the summit, with a gl.and at the base. 

 Stigma 2-lobed. Capsule many-seeded. Seed crested. — Caulescent, annual or 

 biennial herbs, with bipinnate dissected leaves, and flowers in lateral and termi- 

 nal racemes. 



1. C. aurea, Willd. Stems diffuse ; racemes simple ; capsule knotted, 

 drooping ; crest of the seeds scalloped ; flowers yellow. — Banks of the Apa- 

 lachicola Kivcr (and as an annual weed in gardens), Florida to Mississippi 

 and northward. March and April. — Stems 6'- 12' long. Leaves finely dis- 

 sected. 



2. C. glauca, Pursh. Stems erect ; racemes compound ; capsule even, 

 erect, crest of the seeds entire, flowers whitish, tinged with yellow and reddish. 

 — Mountains of North Carolina and northward. May. — Plant glaucous, 1 ° - 2° 

 high. Divisions of the leaves coarser than the last. 



Order 12. CRUCIFER.*:. (Mustard Family.) 



Herbs with pungent watery juice, alternate exstipulate leaves, and reg- 

 ular hypogynous racemose or corymbose flowers, on bractless pedicels. 

 Fruit a silique or silicle. — Sepals 4, deciduous. Petals 4, regular, placed 

 opposite each other in pairs, their spreading limbs forming a cross. Sta- 

 mens 6 (rarely fewer), two of them shorter. Capsule 2-celled by a mem- 

 branaceous partition which unites the two marginal placentse, from which 

 the two valves separate at maturity, or indehiscent and nut-like, or sepa- 

 rating into 1-seeded joints. Seeds campylotropous, without albumen, 

 filled with the large embryo, which is curved or folded in various ways, or 

 straight only in Leavenworthia. (The genera are distinguished chiefly 

 by the fruit and seed ; the flowers being nearly similar throughout the 

 order.) 



