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16.R.mieropus Kindb. cat. Canad. m. — R. heterostichum 
yar. occidentale Renauld et Cardot. Oi 
Leaves long-acuminate greenish channelled with thick bor- 
ders; cells yellow gen. narrow, the uppermost sometimes sub- 
quadrate; costa percurrent; hairpoint long. Capsule oblong 
cylindric with short oblique beak; pedicel about 0,5 c. m. long. 
Habit of R. microcarpum. — Granite rocks in alp. region r. 
Amer. Pacif. distr. Can. Brit. Col. 2000 metr. a. sea: Macoun. 
U. S.: Roell; Henderson, com. Cardot. 
4, Leevifolia, 
A. : Leaves channelled, thickened at upper borders. 
17.R.affine Schleicher. — Trichostomum Schl.; Racomitrium 
Lindb. 7 
Leaves ovate-lanceolate recurved below; upper cells round- 
quadrate not or indistinctly sinuous; hairpoint short. Capsule 
suboblong; teeth partite; pedicel about 1 c. m. long. Tufts 
gen. not high and often dense. Stem often without short 
branchlets. — Siliceous rocks not- common. Eur. Norway, 
Switzerl.! Sweden: Arnell: Amer. Can. Macoun; Waghorne. 
.. U. S.: Roell. 
— *R.obtusum Smith. — Trichostomum Sm.; Racomitrium Lindh. 
Leaves gen. obtuse without hairpoint. — Eur, Sweden: Arnell. 
Norway: Bryhn. Amer. Can.: Macoun. 
B. Leaves catinate above with not thickened borders. 
J 18R.heterostiehum Hedwig. — Trichostomum H.; Racomi- 
. rium Brid: 
Leaves ovate-lanceolate acuminate recurved nearly all around; 
cells as in the last; hairpoint often long. Capsule oblong- 
cylindric often somewhat large; teeth partite; pedicel 1 c. m. 
. Or somewhat longer. Tufts us. grayish. Stem often with short 
branchlets. — Quartzose stone princ. below alps. Eur. common. 
Sweden, Norway, Switzerl.| Amer. Can; J. Macoun. Alaska: 
— J. M. Macoun. U. S.: Henderson, com. Cardot. 
*R.mieropoides Kindb. n. subsp. 
Leaves pellucid with very short.hairpoint; upper cells some- 
times rectangular; alar- cells hyaline. Capsule small scarecly 
shorter than pedicel. — Rocks in alp. region r. Amer. Pacif. 
distr. Can, Brit. Col: Macoun. U. S.: Roell. T 
Iniumieroearpum Schrader. — Dicranum Schr.; Racomitrium 
rid. : 
-Leaves as in the last; cells narrow-rectangular distinctly 
sinuous. Capsule small gen. suboval; teeth partite; pedicel short. 
