NOTES ON NORTH AMERICAN WILLOWS. II! 
CARTETON RY BATT 
(WITH THREE FIGURES) 
The first paper? in this series dealt with four western willows, 
including two new species, one new variety, and one new combina- 
tion. The present paper contains one new species (§ PHyLict- 
FOLIAE) and descriptions of typical Salix sessilifolia Nutt. and of 
the plant which is usually described in manuals of botany under 
that name. 
The writer wishes to acknowledge here the courteous assistance 
of Professor C. V. Preer in communicating his notes on the types 
of Nutratt’s Salix sessilifolia and other species in § LONGIFOLIAE, 
studied by him at the British Museum. The same acknowledge- 
ment is gladly given to Dr. C. F. Mittspaucu of the Field Museum 
and to Dr. B. L. Rosinson of the Gray Herbarium, and to their 
associates, for the loan of material representing the species dis- 
cussed. 
Salix pennata, n. sp. (fig. 1).—Low shrub with dark, divaricate, 
stoutish, glabrous branchlets and large chestnut buds; leaves obo- 
vate or elliptic-obovate, 3-6 cm. long, acute, narrowed at base, 
entire, very dark green above, glaucous beneath, the raised midrib 
and parallel primary veins conspicuous beneath, glabrous; aments 
*Since the above was in press the writer has collected true S. sessilifolia Nutt. 
Co! 
River and adjacent stbushs for a distance of about 15 miles below Portland, including 
part of the famous Sauvie’s Island. The species here treated as S. fluviatilis Nutt. 
is a common plant about Portland, from Ross Island, 2 miles above the city, to 
Sauvie’s Island, some 15 miles below. It is the dominant willow at the Dalles, 
Oregon, just east of the Cascade Mountains. “Both here and on the lower Willamette 
It ae is the only species of the Longifoliae. 
ALL, CARLETON R., Notes on North American willows. I. Bot. Gaz. 40:376- 
380. os 12, 13. 1905. 
45 [Botanical Gazette, vol. 60 
