1909] Forbes,— Salix subsericea a distinct Species 9 
iv. 13 (1824). P. Anserina, B. grandis 'T. & G. Fl. i. 444 (1840). 
Argentina Egedii Rydb. Mem. Dept. Bot. Columbia Univ. ii. 158 
(1898) in part. A. Anserina grandis Rydb. 1. с. 161 (1898). А. 
pacifica Rydb. in N. A. Fl. xxii pt. 4, 353 (1908). A. litoralis Rydb. 
1. с. 354 (1908). A. subarctica Rydb. 1. c. 354 (1908).— From Green- 
land to northeastern Siberia, extending southward, in damp brackish 
or saline soils, chiefly near the coast to Long Island, New York, 
California, and Japan; in arctic and subarctie situations and in un- 
favorable conditions southward becoming very small. 
+ 2— Calyx and lower surfaces of the simply pinnate leaves glabrous or 
glabrate. 
P. Есерп Wormsk. Fl. Dan. ix. fase. 27, 5. t. 1578 (18 8). Р. 
Anserina, 8 Egedii T. & G. Fl. i. 444 (1840). P. Anserina, var. 
concolor Lange, Consp. Fl. Groenl. 234 (1887) not Wallr. Argentina 
Egedii Rydb. Mem. Dept. Bot. Columbia Univ. ii. 158 (1898) in part. 
— Arctic regions, extending south on our coast to northern Labrador. 
GRAY HERBARIUM. 
SALIX SUBSERICEA A DISTINCT SPECIES. 
F. F. FORBES. 
For the past two seasons the writer has been much puzzled by a 
willow the characters of which do not agree with any description given 
in the current manuals. This willow is rather common in the vicinity 
of Boston, growing in wet places where willows usually thrive. ‘The 
writer has collected it in different locations in Dedham, West Roxbury, 
and Arlington. Leaf-specimens collected in western Massachusetts 
and in southern New York indicate that it has quite a wide range. 
It was at first suspected that the willow in question might be a 
hybrid between Salix cordata Muhl. and S. sericea Marsh., but study 
of numerous specimens from many different shrubs shows that it 
cannot be a hybrid. As far as the writer's observations go, willows 
which are hybrids between two definite species do not present constant 
characters. One shrub may have the fruit more like that of one 
parent and the leaves more like those of the other; or the shrubs may 
be quite intermediate in most respects; but no two of them are alike. 
