— 181 — 
in subalp. districts. Eur. not r: Sweden, Norway, Germany, 
Switzerl| Finl.: Brotherus. Amer. r. Can.: Drummond. U, $.: 
Roell. i 
*D.zonatum Bridel. — Weisia Brid.; Ditrichum Limpricht. 
Leaves acute or short-subulate, appressed when dry, suberect 
when moist; costa percurrent or short-excurrent. Tufts dense 
but sparingly radiculose, sometimes 3—4 c. m. high. Capsules 
unknown. — Rocks in alp. region r. Eur. Germany: Limpricht. 
Austria: Breidler. Sweden: E. Nyman. Norway: Kaurin. 
bb. Perichetial leaves not sheathing. Peristome with distinct 
basal tube. 
10.D.tortile Gmelin. — Mnium Gm.; Ditrichum Lindb. 
_ Leaves gen. somewhat long-subulate and. not or sparingly 
denticulate, sometimes slightly recurved, us. not appressed when 
dry; costa percurrent or short-excurrent. Tufts eradiculose. — 
Sandy places also in alps. Eur. Sweden, Switzerl.! France: 
Husnot m. gall. Amer, Can.: Macoun; Waghorne, 
* D.pusillum Hedwig. — Trichostomum H.; Ditrichum Timm. 
Stem lower; leaves shorter and less patent; costa scarcely 
. excurrent. — Eur. not r. Sweden: M. Huss. . France: Husnot 
. "m. gall. Amer. Can.: Drummond; Macoun. 
*D.nivale C. Mueller. — Leptotrichum €. M.; -Ditrichum 
Limpricht. 
Leaves appressed when dry, suberect when. moist; costa 
fainter, excurrent in upper leaves. Capsule smaller. — Alp. 
rocks r. Eur. Austria: Berggren, com. Groenwall. 
M. Leaf-cells round-quadrate. ‘Capsules unknown. : 
. lLB.elatum Kindb. n. sp. — Leptotrichum flexicaule *brevi- 
. folium Kindb. cat. Can. m. io 
J Leaves small gen. entire, from short base abruptly tapering 
. to the not much longer acute or subulate acumen, appressed 
= When dry, patent when moist; costa percurrent. Tufts loose 
. -eradieulose not glossy, to 6 c. m. high. — Alp. rocks r. Amer, | 
. Van. Rocky mts: Macoun. re 
. 12.D.Macounii C. M. et Kindb. — Distichium C. M. et K. 1. 
. © Ditrichum Kindb. 
.. Leaves small sometimes denticulate at apex, from short base 
abruptly tapering to a longer subulate acumen, faintly appressed 
‘When dry; costa percurrent. Tufts dense, radiculose below, 
358 ocj m. high. — Alp. rocks r, Amer. Can. Brit. Col.: J. 
coun, i i o : istos 
