BARNES — NORTH AMERICAN MOSSES. 355 



529. AmblystegiumdistantifoliuiuKindb. — Stems irregularly branch- 

 ing, creeping: leaves green, distant, spreading wiien dry, patent when 

 moist, long oval lanceolate, long cuspidate, not or indistinctly decurrent, 

 sharply serrulate all around, chlorophyllose; cells wide, sub-oblong; costa 

 thick, percurrent or nearly excurrent: barren. Mac. Oat. 222. — On rocks, 

 Newfoundland. 



530. Amblystegrium dissitifolium Kindb. — Tufts compact, sparingly 

 radicant, green, not glossy: leaves very loosely disposed, long decurrent, 

 ovate oblong, short-acuminate, denticulate all around; areolation loose, 

 upper cells narrower, alar larger quadrate and well distinct, as chlorophyl- 

 lose as the other cells; costa percurrent: probably dioicus; only male 

 flowers found. Mac. Oat. 220. — On flat limestone rocks which receive 

 dripping water: Canada. 



531. Amblystegium sab-compactniu 0. M. &. Kindb.— Differs from 

 A. compactum in stems thicker, leaves larger and longer; capsule asym- 

 metric, curved in young state, at least doubly greater. The British Col- 

 umbia specimens have a peculiar habit; tufts are decolorate below, bright 

 green above, and stems erect. Mac. Cat. 221. — Growing in thick tufts at 

 the bases of trees around springs and margins of bogs, also on wet 

 rocks: British Columbia and Canada. 



532. Amblysteg'inm riparinm longifolium Sch. — Leaves narrow, lanc- 

 eolate, long and finely acuminate. Husnot, Muse. Gall. 363. — Vancouver 

 Island and Washington. 



533. Amblystegrium ripariura serratum Ren. & Card. — Plants slen- 

 der, creeping: leaves narrow, serrulate at apex. Bot. Gaz 14: 98. 1689. — 

 Roots of trees: Kansas. 



534. Amblystegrinm Floridanuin Ren. & Card. — Very small, ap- 

 pressed: leaves small, narrowly lanceolate, long acuminate, entire: cap- 

 sules short, arcuate. Bot. Gaz. 14: 98. 1889, as A. riparium, var. — 

 Florida; Louisiana. 



535. Amblysteginm Eochii Sch. — Closely related to A. riparium: 

 stems depressed, with ascending or erect branches: leaves spreading in all 

 directions; those of large branches cordate-oval or broad oval; those of 

 small branches long acuminate, denticulate, costate for % length, basal 

 cells rectangular; middle sub-hexagonal, much larger than in A . riparium; 

 pedicel long; capsule oval or oblong; annulus simple. Husnot, Muse. 

 Gall. 362.— Kansas. 



536. Amblystegium homalosteginm Jgr. & Sauerb. — Monoicous: tufts 

 low, broad, du-ty green, rather dense and rigid: stem creeping, pseudo- pin- 

 nate, with many short erect or curved densely aggregate slender simple 

 branches: stem leaves densely imbricate, indistinctly secund, when wet 

 making the stems appear julaceous and turgescent, broadly ovate from a 

 cordate base, short acuminate, concave; margin plane, obsoletely denticu- 



