•36 LESQUEREUX — CATALOGUE 



Ilab. swamps near the coast, Mendocino, Bol.; Oregon, JJ. 8. Wilkes' Exp. ; 

 Fort Colville, L/ydll; indicated by Midler, as found at Cape Disappoint- 

 ment. 



I 10. 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, LyaJl. 



248. H. serpens, Lin. 



Hab. on the roots of bushes, in swamps, Bol. ; on the ground, near Crescent 

 City, Brew. ; common in California, Big. 



249. H. radicale, Beau v. 



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. radicale, as it is generally understood, has the leaf cells shorter and 

 proportionally broader, and a longer and stronger costa than II. serpens, Lin. About 

 the understanding of this troublesome species, I readily admit what Mr. Sullivant says 

 in his Icones, p. 200 : " H. orthocladou, H. contextum, H. teuax, H. inordiaatum, H. 

 " varium, attributed to this country oxdy, are (together with a few other supposed 

 " species, included II 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 II serpens, to 

 " which they have been referred by Midler and others." 



250. H. orthocladum, Beauv. 



H. varium, Hook, and Wills., in Drummond. 



Hab. borders of springs, and among willows, Little Lake Valley, Bol. ; Pend' 

 Oreille River, Lyall. 



251. H. riparium, Lin. 



Hab. Mill Falls, Oakland, and Big Tree grove ; around springs, Bol.; near 

 Crescent City, Brtw. ; wet places, Bit/. 



I 11. CAMPYL1UM, Sulliv. 



252. H. hispidulum, Brid. 



Hab. Mooyie River, Lyall. 



I 12. HARPIDIUM, Sulliv. 



253. H. aduncum, Hedw. 



Hal), a swamp in San Francisco, Bol. 

 (30) 



