COBYDALIS. CRUCIF.ER.K. .35 



inch or less long, the nearly straight spur fully twice as long as the rest of 

 the flower ; hood of the outer petals emarginate by the development of 

 broad thin margins which are recurved over the narrow and undulate dor- 

 sal crest : capsule oblong, turgid, 6 lines long : seeds nearly smooth, with a 

 conspicuous orbicular carunculate crest. Along alpine streams, Blue and 

 Eagle creek Mountains, eastern Oregon to western Idaho. 



2. Biennials, mostly branched from the base, with finely 

 dissected leaves and siliquiform capsule. 



(' aurea Willd. Enum. 710. Commonly low amj spreading: flowers 

 golden yellow about half an inch long, on rather slender pedicels in a short 

 raceme": spur barely half the length of the body wiien dry, 10-12-seeded. 

 seeds turgid obtuse at margin, the shining surface obscurely reticulated. 

 Rocky banks, eastern Oregon to Brit. Columbia, Lower Canada and 

 northern New England (Gray, Syn. Fl. i, 97}. 



C. montana Engelm. in Gray, PI. Fend.' 8. Stems decumbent, 6-12 

 inches long: leaves pinnate, leaflets 5-7 parted, the divisions irregularly 

 laciniate-toothed : flowers yellow, in short-peduncled racemes ; spur shorter 

 than the rest of the flower: capsule 4-angled, deflexed in fruit: seeds 

 acutely margined muricate. From the Blue Mountains of Oregon to west- 

 ern Idaho and Mexico. 



ORDER VII. CRUCIFER.E Endl. Gen. 861. 



Herbs rarely sufirutescent, with pungent watery juice, cruci- 

 form corolla tetradynamous stamens and 2-celled pod (silicle or 

 silique) with two parietal placenta?. Flowers perfect hypogyn- 

 ous. Sepals 4, often colored, deciduous. Petals 4, usually with 

 narrow claws and spreading lamina, rarely wanting. Stamens (5, 

 two of them inserted lower clown on the receptacle and shorter 

 than the other 4. Ovary 2-celled by a partition which stretches 

 across from the placenta? or the partition, rarely wanting. Style 

 undivided or none : stigma entire or 2-lobed. Ovules few or nu- 

 merous, camplytropous. Seeds smooth, without albumen. Coty- 

 ledons either accumbent applied edgewise to the radical or incum- 

 bent, with the radical against the back of one of them or sometimes 

 conduplicate, plicately folded and partly enveloping the radical. 

 Inflorescence racemose orspicate or somewhat corymbose and 

 (with rare exceptions) ebracteate. 



SERIES i. Pods 2-valved, dehiscent their whole length (except 

 in Brassica), not compressed contrary to the partition. 



TRIBE i. Fruit completely or incompletely 2-celled, regu- 

 larly dehiscent, flattened parallel to a broad partition, terete, or 

 prismatic, short or long. 



* Pods more or less strongly compressed parallel to the partition. 



1 Parrya. Pods lanceolate, acuminate; valves flat, with a prominent 



central nerve and reticulated: seeds in 1 row in each cell, large, not 

 winged . 



2 Cheiranthus. Pods strongly compressed, 1-4 inches long, broadly 



linear, with flat 1-nerved valves or narrow and quadrangular with con- 

 vex and more or less distinctly keeled valves. 



* * Pods globose terete or prismatic, at least not compressed parallel 

 to the partition. 



