1919] SCHNEIDER, NOTES ON AMERICAN WILLOWS. VI 79 



Brewer, and his No. 1732 from the given locality, June 27, 1863, of which 

 I have seen specimens in Herb. G. and W., represents the type number. 

 There are, however, only female specimens under this number. Later 

 (1891) Bebb thought it would be best to drop "a species of such question- 

 able validity'' which possibly might represent a form of S. chlowphylla. 

 Ball (1899) discussed the question, and suggested ''that the staminate 

 aments of S, monica with their linear scales, may be found to belong to 

 some other species" but he had not seen Bebb\s type. Jepson (1909) mixed 

 *S. monica with forms with glabrous ovaries that really belong to a variety 

 of S. Eastwoodiae Cock. lie, however, collected good flowering material 

 at the type locality on July 19. 1911, at an altitude of about 3500 m. (Xo. 

 4466, m., f.; A.) which is identical with Brewer's No. 1732. The difference 

 of the bracts of the male and female flowers alluded to by Bebb carmot be 

 observed in Jepson's plants. The scales of both the sexes are narrowly 

 oblong to ovate-lanceolate, and in the male plant only somewhat more 

 acute; after all their shape is variable to a certain degree in both plants. 

 The aments are from subglobose to short-cylindric, the female measuring 

 up to 1.5:1 cm., while the male are subglobose and hardly more than 1 cm. 

 long and thick. In the young leaves the different (glaucous) color of the 

 lower surface is scarcely visible, and only the lowermost (first) leaves are 

 sometimes covered beneath with a few silky hairs. The number of sto- 

 mata is almost equal in the epidermis on both surfaces. There are a few 

 remaining old leaves of a narrowly ellix)tic or oblanceolate shape which 

 measure up to 22:9 mm. The style is a little longer (up to 0.8 mm.) than 

 in Brewer's No. 1732, and the ovaries are subsessile in both, the very short 

 pedicel being about half the length of the gland. On July 14, 1899, Jepson 

 already had collected a very similar fprm on the saddle of Mount Dana, 

 at the same altitude (No. 3308, fr.; A.) with a few old male amenls, and 

 rather adult female aments, and also with almost fully developed narrowly 

 or broadly elliptic or obovate-elliptic leaves measuring up to 2:1 cm. They 

 are more or less distinctly glaucous beneath; the lowest ones bear some ful- 

 vous silky hairs beneath, and the youngest show a scanty pubescence on 

 both surfaces soon becoming glabrous. The main difference between these 

 specimens and those mentioned above is found in the ovaries which have a 

 more distinct pedicel wliich in the oldest flowers is somewhat loni::er than 

 the gland. 



In describing his S. rpennata (see later) Ball said that ''little S. monica is 

 found in the central Sierra Nevada." I have carefully compared many 

 specimens from the Rockies referred to S. chlorojphyUa, and there are quite 

 a number among them, especially from high alpine regions in Colorado, 

 which I cannot distinguish at all from typical 5. monica. They also are 

 provided with numerous stomata in the upper surface of the leaves, and 

 often have short styles hardly as long as the stigmas. The leaves, as a 

 whole, are smaller and broader, more elliptic or obovate-elliptic than in the 

 eastern type, but the shape Is rather variable, and seems not to afford a 

 good taxonomic character. Such forms are for instance: J. H. Cowen's 



