48 BOTANICAL GAZETTE [JULY 
1.2-1.5 mm. long, black, densely clothed on both surfaces with 
long, straight, shining, white or yellowish hairs. 
Staminate aments stout, sessile, 2. 5—3 cm. long; stamens 2, fila- 
ments slender, 6-8 mm. long, glabrous, free, anthers short, oval; 
scales as described or somewhat narrower, hairs white or flavescent. 
Salix pennata (fig. 1) is easily one of the most beautiful species of § PHYLI- 
CIFOLIAE. In relationship it lies between S. chlorophylla and S. pulchra. 
Geographically, also, it occupies a position between these two species. It is 
abundantly distinguished from both. From S. chlorophylla it is separated by 
the much larger and darker leaves, obovate rather than elliptical, with their 
conspicuous parallel primary veins, especially on the lower surface, and by the 
longer aments and capsules. From S. pulchra it may be distinguished by much 
the same series of characters. While S. pulchra also has large leaves, they are 
more rhombic-oblanceolate than obovate in outline, always bright and shining 
green above and less strikingly veined. The stipules in that species also are 
linear-lanceolate, glandular, and very persistent. Owing to the cold and wet 
situations in which it occurs, S. pennata is a late-flowering species. All the 
specimens bearing flowers were collected in July, while fruit may be found well 
into August. 
Our species is also an interesting example of apparently restricted distribu- 
tion. So far, collections have come only from the two great peaks of the 
central Cascades, Hood and Adams, which face each other across the gorge of 
the Columbia. Further search may reveal the species on Jefferson and 
Rainier. The specimen collected by SuksporF in Skamania County, Washing- 
ton, on July 31, 1883, and the battered, fragmentary specimen of the Wilkes 
Expedition are somewhat doubtfully referred here. Both have leaves more 
pecies. 
Cascades, though little S. monica is found in the central Sierra Nevada. 
SPECIMENS EXAMINED.—OREGON: Marion County: 10 miles west of Olay 
Butte, in alder swamp at head of a canyon, E. J. Applegate 2758, Sept. 4, 1898 
(N); north base of Olay Butte, in wet meadow, alt. 4000 ft., Applegate 2766, 
Sept. 6, 1898 (N); Clackamas County: edge of swamp, 10 miles north of Olay 
Butte, alt. 4000 ft., Applegate 2770, Sept. 6, 1898 (N); vicinity of Mt. Hood: 
in swamp, north diane of Mt. Hood, Thomas Howell, Oct. 2, 1886 (FBb); Gov- 
ernment Camp, Mt. Hood, edge of wet meadow, E. I. Applegate 2801, Sept. 
12, 1898 (N); F. A. Walpole 354, Aug. 28, 1899 (N), growth low, dense, com- 
pact, 3-4 ft.; shore of Lost Lake, Mt. Hood, H. D. Langille 20, July 6, 1901 
(B, N). 
WASHINGTON: Mt. Adams and vicinity: Mt. Paddo (Adams), W. N. 
Seksint Jay 1883 (B, N); mountains of Skamania County, Suksdorf 
1371, Sept. 6, 1883 (B, N); Mt. Paddo (Adams), Suksdorf 15 (pistillate type), 
16 tetarn ints yee: 17, July 13, Aug. 12, 1886 (FBb); no locality, U.S. Explor- 
ing Expedition under Capt. Wilkes, interior of Washington Territory (N). 
