coBYDALis. CRUCIFER.E. '35 



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

 the flower; hood of the outer petals etnarginate 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 streattiSi Blue and 

 Eagle creek Mountains, eastern Oregon to western Idaho. 



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

 dissected leaves and siliquiform ca,psule. 



C. aurea Willd. Enum. 710. Commonly low and 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 when 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. Ft:i, 97). 



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

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

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

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

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

 ern Idaho and Mexico. 



Order Vll. CRUCIFER.E Endl. Gen. 861. 



Herbs rarely suffrutescent, with pungent watery juice, cruci- 

 form corolla tetradynamous stamens and 2-ceHedpod (silicle or 

 silique) with two parietal placentae. Flowers perfect hypogyn- 

 ous. Sepals 4, often colored, deciduous. , Petals_4, usually with 

 narrow claws and spreading lamina, rarely wanting. Stamens 6, 

 two of them inserted lower down on the receptacle and shorter 

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

 across from the placentae or the partition, rarely Wanting. Style 

 midivided 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, wiih the radical against the back of one of them or sometimes 

 conduplicate, plicately folded arid partly enveloping the radical. 

 Inflorescence racemose orspicate or somewhat corymbose and 

 (with rare exceptions) ebracteate. 



Series i. Pods 2-valved, d^iscent 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 Cheiranthns. 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. 



