CRUCIFERJE. (MUSTARD FAMILY.) 23 



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

 ers racemose, nodding. 



1. D. Cueullaria, DO. Rhizoma granular, bulb-like ; scape simple, 

 4- 10-flowercd, longer than 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 G'-9' high. 



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

 flowered, shorter than the (3-8) oblong-lobed 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 

 8' -12' high. Bracts purplish. 



3. CORYDALIS, Vent. 



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

 at the base. Filaments united nearly to the summit, with a gland 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 River (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 Carolinaand northward. May. — Plant glaucous, l°-2° 

 high. Divisions of the leaves coarser than the last. 



Order 12. CRUCIFER^E. (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 G (rarely fewer), two of them shorter. Capsule 2-celled by a mem- 

 branaceous partition which unites the two marginal placenta?, from which 

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

 rating into 1 --ceded 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.) 



