100 Salicaceae 



stamens with filaments distinct or sometimes united be- 

 low. Pistillate usually ered orspreading ; ovary sessile 

 or short-stipitate ; style shorl or filiform, with 2 entire 

 or '1 cleft stigmas. Capsule mostly 2-valved. 



* Stamens S or more; aments terminating leafy branchlets. 



1. S. nigra vallicola Dudley n. var. Tree 8-12 in. high, 'with 

 dark, rougli hark ; leaves green on both surfaces, glabrate, nar- 

 rowly lanceolate. 5-12 cm. long, 8-12 mm. wide, closely serrulate, 

 acute or acuminate, narrowed at hase to petioles 4-6 mm. long, 

 which are quite puherulent or nearly glabrous at maturity; stip- 

 ules lanceolate when well developed, the larger 8-10 mm. long, 

 all glandular toothed, often with similar glands on the lower sur- 

 face and on the serratures of the young leaves ; ameuts expand- 

 ing with the leaves, terminating the short lateral branches, the 

 staminate 3-6 cm., the pistillate 2.5-5 cm. long; stamens 5-11, 

 their filaments tomentose below; bracts pale, obovate or round- 

 ish, usually very tomentose; style short; stigmas 2. lobed; 

 capsule ovoid, glabrous or moreor less pubescent, mostly 4-5 mm. 

 long, from slightly longer to twice the length of the smooth 

 pedicels. 



The largest willow in southern California. Frequent along the Santa Ana 

 River from Santa Ana to San Bernardino: also along the San Diegulto and 

 San Diego Rivers in San Diego County. The type of this heretofore unde- 

 scribed willow is the author's no. 3356, collected along the Santa Ana ' 

 River near Orange. 



2. S. lasiandra Benth. A middle-sized tree with rougli hark; 

 leaves rather broadly lanceolate, 7-15 cm. long, abruptly taper- 

 ing at the base, acuminate at apex, sharply and closely serrulate, 

 pale beneath ; petioles glandular at the base of the blade ; stipules 

 small, glandular-serrate; aments on long peduncl.es, the pistillate 

 5-7 cm. long; bracts of the staminate yellowish, toothed ; sta- 

 mens usually 5; ovary glabrous; stigma nearly sessile, bifid; 

 capsule lanceolate, 6-8 mm. long, on pedicels 2 mm. long. 



Occasional along streams in the valleys. Los Angeles River, Dear Cahu- 

 enga Pass. A form with smaller leaves and aments is apparently frequent 

 along all the streams in the valleys; it is near the type, but the petioles 

 and stipules are inconspicuously glandular. 



H. S. laevigata Behl). Tree 10-15 in. high ; branches reddish- 

 brown ; leaves lanceolate to oblong-lanceolate, serrulate, green 



