36 LESQUEREUX — CATALOGUE 
Hab. swamps near the coast, Mendocino, Bol.; Oregon, U. S. Wilkes’ Exp. ; 
Fort Colville, Zyail; indicated by Muller, as found at Cape Disappoint- 
ment. 
210. AMBLYSTEGIUM, Bryol. Eur. 
247. H. compactum, Mull. 
H. serpens var. compactum, Hook. 
Hab. on the ground around springs, Big Tree grove, Bol.; near Fort Col- 
ville, Lyall. 
248. H. serpens, Lin. 
Hab. on the roots of bushes, in swamps, Bo/.; on the ground, near Crescent 
City, Brew. ; common in California, big. 
249. H. radicale, Beauv. 
Hab. Galton and Cascade Mts., Lyall. 
According to Mr. Mitten, who mentions this species, which he calls a much mis- 
understood species, it differs from H. serpens in its narrower and longer leaf cells. If 
we admit the descriptions of Schimper and other authors, and rely for the nomencla- 
ture on our American specimens as types, the contrary should have been asserted. 
For, indeed, H. radieale, as it is generally understood, has the leaf cells shorter and 
proportionally broader, and a longer and stronger costa than H. serpens, Lin. About 
the understanding of this troublesome species, I readily admit what Mr. Sullivant says 
in his Icones, p. 200: ‘‘ A. orthocladon, H. contextum, H. tenax, H. inordinatum, H. 
“varium, attributed to this country only, are (together with a few other supposed 
‘species, included H. radicale, found both here and in Europe) so variable in their 
‘‘ characters, and pass so gradually into each other, that it appears quite impracticable 
“to define their specific limits, or to separate them from large forms of H. serpens, to 
‘which they have been referred by Muller and others.” 
250. H. orthocladum, Beauv. 
HI, varium, Hook. and Wills., in Drummond. 
Hab. borders of springs, and among willows, Little Lake Valley, Bol. ; Pend’ 
Oreille River, Lyall. 
H. riparium, Lin. 
Hab. Mill Falls, Oakland, and Big Tree grove ; around springs, Bol. ; near 
Crescent City, Brew.; wet places, Big. 
t 
NX 
— 
¢ 11. CAMPYLIUM, Sulliy. 
252. H. hispidulum, Brid. 
Hab. Mooyie River, Lyall. 
412. HARPIDIUM, Sulliv. 
253. H. aduncum, Hedw. 
Hab. a swamp in San Francisco, Bol. 
