Dalea. LEGUMINOS^E. 



141 



In the Coast Ranges, near the sea, from Marin Co. (Bolander) to San Diego Co. It closely 

 resembles A. frxUicosa of the Atlantic States, but iliffers in the shape and pubescence of the pod, 

 the more acute calyx-teeth, and the almost spinescent glands. These last, however, are some- 

 times entirely wanting. Some of the specimens from Marin Co. are remarkable for conspicuous 

 stipules and larger bmcts. 



11. BALEA, Linn. 

 Calyx nearly equally 5-cleft or toothed. Standard cordate, its claw free : wings 

 and keel usually longer ; their claws adnato to and jointed upon the cleft stamineal 

 tube. Stamens 10 (sometimes 9), monadelphous ; anthers uniform. Ovary 2- 

 (rarely 4 - 6-) ovuled. Pod ovate, compressed, usually indehiscent, included in the 

 calyx, 1 - 2-seeded. — Herbs or shrubs, glandular-punctate ; leaves unequally pin- 

 nate, very rarely digitately 3-foliolate or simple ; leaflets small, entire, sometimes 

 stipellate ; stipules small, subulate ; flowers nearly sessile in terminal pedunculate 

 spikes or rarely solitary. 



An American genus of nearly 100 species, a dozen natives of South America, 50 Mexican, and 

 the rest belonging to the warmer portions of the United States. The Californian species are con- 

 fined to the southeastern desert region. 



Petalcstemon, Michx., is a similar genus, differing in having only five stamens, the flowers 

 always in dense bracteate cylindrical spikes. There are over 20 species, confined to the United 

 State-s, several as far westward as Central Arizona, Utah, and tlie basins of the Snake River and 

 Columbia, but none have been found near the borders of California. 



§ 1. Claws of the wings and keel adnate to the stamen-tiibe nearly to their middle : 

 ovules a single pair. — Dalra proper. 



* Herbaceous: flowers erect or ascending, in dense spikes, with conspicuous bracts: 



calyx very villous, with long slender teeth : leaflets several or many. 



No species of this group of the genus have l>cen collected in California, but the following 

 approach it and some of them may yet be Ibund. 



p. BRACHY8TACHYS, Gray. A low glabrous annual : flowers yellow, in globose or oblong 

 spikes : bracts villous-ciliate, somewhat persistent : leaflets about '5 pairs. — §. Arizona to New 

 Mexico. 



p. ALOPECUROIDES, Willd. A rather tall glabrous annual : flowers light rose-color, in cylin- 

 drical spikes : bracts pubescent, scariously margined, deciduous : leaflets 10 to 20 pairs. — From 

 Southern Arizona eastward to the Mississippi. 



D. L^.vjGATA, Gray. A tall glabrous jwronnial : flowers yellow or white, in cylindrical spikes : 

 bracts very silky, somewhat jiersistont : leaflets many pairs, very small. — From Southern and 

 Central Arizona to New Mexico. 



D. ALFIFLORA, Gray. A tall pubescent perennial : flowers white, in cylindrical spikes ; bracts 

 narrow, very silky, deciduous : leaflets 8 to 16 pairs, small. — From Central and Southern Arizona 

 to New Mexico. 



D. NANA, Torr. A low silky biennial or perennial : flowers yellow, in short thick spikes ; 

 bracts very silky, deciduous : leaflets 2 or 3 pairs, oblong, obtuse. -- From Central and Southern 

 Arizona to Texas and Mexico. 



* * Herbaceous or someivhat woody at base : flomrs spreading or deflexed, in rather 

 loose spikes: bracts narrow, deciduous: calyx villous or pubescent, with mostly slender 

 teeth. 



1. D. mollis, Bcnth. Herbaceous, branching from a biennial or perennial root, 

 low (3 to G inches high), silky-vilJous with more or less spreading hairs : leaflets 

 3 to 7 pairs, obovato to cuneate-oblong, 1 to 4 linos long : flowers crowded in oblong 

 flhortly iindunculate heads, white or rose colored : l>rac.tfl Innreolato, ncumiiiato, vil- 

 lous : calyx very villous, 2 or 3 linos long ; Mio liliforni plumose teeth much longer 

 than tlie tube and exceeding the corolla. — PI. Hartw. 30() ; Gray, PI. Wright, i. 47. 



At Fort Mohave {Cooper) ; on the Colorado (Newberry) ; and eastward to New Mexico. First 

 collected by Coulter, probably in S. Arizona. 



