38 CRUCIFER.E. PARRYA. 



CHEIRANTHUS. 



Tribe 1. Arabidese DC. Stigma when lobed prolonged over the 

 placenta. Pods 2-celled, sometimes incompletely so, regularly dehi- 

 scent, flattened, parallel to a broad partition or terete. Cotyledons 

 accumbent (incumbent to convolute in Chieranthus). 



1 PAKE Y A R. Br. in Parry Voy. App. 268. 



Low perennial herbs with mostly radical entire or toothed 

 somewhat fleshy leaves, and rose-colored or purple flowers. Sep- 

 als erect, equal or the lateral ones saccate at base. Petals spatu- 

 late unguiculate. Anthers usually linear. Style short ; stigma 

 lobes connate. Pods compressed, the valves plane, 1 -nerved. 

 Seeds in 1 or 2 rows in the cells, large, somewhat compressed, 

 orbicular. Cotyledons various. 



P. Menziesii Greene Bull. Torr. Club xiii, 143. Phcenicavlis Cheiranthoi- 

 des Nutl. T. & G. FL 1, 89. Cheiranthus Menziesii Watson Sot. King, 14. 

 Caudex stout and branching, the branches densely clothed with the persist- 

 ent petioles of former seasons : radical leaves spatulate or oblanceolate, 

 entire, 1-4 inches long, persistent, eanescent, with a dense stellate pubesce- 

 nce, the petioles nearly glabrous : scape-like stems several from each branch 

 of the caudex. twice longer than the radical leaves, nearly glabrous, often 

 leafy-bracted below : flowers large dark purple or red, to ochroleucous, in 

 rather dense many-flowered racemes : pods spreading, on short, stout ped- 

 icels, 1-2 inches long, 1-2 lines broad, not carinate, attenuate to the slen- 

 der style, glabrous few-seeded. On stony hillsides, northern California 

 and Nevada to Brit. Columbia east of the Cascade'Mountains. 



Var. lanuginosa Watson in Gray's Syn. Fl. 152. Pubescence more 

 loose and woolly. Eastern Washington. 



2 CHEIRANTHUS L. Gen. n. 815. 

 Cheiranthus and Erysimum of authors. 



Biennial or perennial herbs with narrow entire or sparingly- 

 toothed leaves and yellow or purple flowers in simple racemes. 

 Sepals erect, oblong to linear-oblong, equal at base or the lateral 

 ones somewhat saccate. Petals commonly large with broad obo- 

 vate blade and slender elongated claw. Stamens 6, free and nn- 

 appendaged. Pods strongly compressed, broadly linear with flat 

 1-nerved valves or narrow and quadrangular with convex and 

 more or less distinctly keeled valves. Seeds numerous, oblong 

 and turgid, or suborbicular and flattened or winged. Cotyledons 

 incumbent or accumbent or the radical very oblique. 



* Petals 2-2}^ lines long, yellow: pods subterete, 5-10 lines long: 

 cotyledons incumbent or nearly so. 



C. turritoides Lam. Encycl. ii. 716. Erysimum cheiranthoides L. 

 Stem erect, subterete, simple or with few subterminal branches : leaves 

 lanceolate, acute at each end, entire or remotely and obscurely denticu- 

 late, 1-3 inches long, thin, green on both faces, sparsely and finely pubes- 

 cent : flowers small, yellow: pods obtusely angled, 5-10 lines long, on 

 somewhat spreading and rather slender pedicels, glabrous, slenderly short- 

 beaked. Along streams, eastern Oregon to Alaska and across the conti- 

 nent. 



* * Petals 3-12 lines long, yellow or orange, rarely purple. Pods 

 subterete or obviously 4-angled, not strongly compressed, 1-4 inches 

 long ; cotyledons incumbent or rarely oblique or somewhat accumbent. 



