— NS 
Leaves ovate acute not recurved, erect when dry; upper cells 
rhombic, lower oval-oblong, lowest basal subquadrate; costa va- 
nishing below middle. Capsule small oval-oblong; teeth reddish; 
segments lower, orange, with longitudinal line and basal mem- 
brane; lid conic; pedicel short. Tufts dirty green. Branches 
distant not curved. Monoecious. Habit of Leskea polycarpa 
but with smaller leaves. — On base of trees, r. on rocks, princ. 
near rivers, r. Eur. Sweden 1853! Norway! Amer, Can.: Macoun. 
2.M.Dieckii Renauld et Cardot. 
Leaves gen. obtuse, sometimes recurved below, appressed 
when dry; cells rhomboidal or oval-oblong except the quadrate | 
not well-defined alar; costa subpercurrent or somewhat shorter. 
Stem leaves ovate-oblong subacute; branch-leaves broad-ovate or 
suboval, sometimes indistinctly apiculate. Capsule (not ripe) 
subcylindric; lid not apiculate; pedicel short smooth. Branches 
distant not curved. Peristome and male flowers unknown. — 
Trees r. Amer. Pacif. distr. U. S: Roell, com. Cardot. 
29. Helicodontium Schwegrichen. 
l.H.subcapillatum Hedwig. — Pterygynandrum H.; Helico- 
dontium Kindb.; Homalothecium Schimp.; Sull. ic. m. 
Leaves serrulate all around or above middle, not striate, re- 
curved to acumen, very small and not appressed; alar cells 
hyaline, the others rhomboidal oblong or the inner basal subli- 
. hear; costa gen. simple vanishing near or above middle, some- 
times shorter and double. Stem-leaves ovate abruptly narrowed 
to a long filiform or subulate point, decurrent; branch-leaves 
ovate-oblong gen. long-subulate. Perichetial leaves narrow long- 
acuminate, Capsule suboblong very small; teeth red, bordered 
at base (»sometimes also above»: Sull. l. c.) by the rudimen- 
tary endostome; lid rostellate; pedicel faintly rough, very short; 
calyptra sometimes beset with long hairs. Spores large. Bran- 
ches erect subdistant not or faintly curved. Dioecious. — On 
ark r, Amer. U. S.: Sullivant, com. C. Mueller; Wolf, com. 
Macoun. 
Fam. 10. Entodontacee. 
30. Holmgrenia Lindberg (Orthothecium Schimper). 
A. Tufts loose sparingly radiculose. Leaves more or less 
striate, reddish at insertion. Endostome not longer than teeth. 
à. Leaves us. large and distinctly striate or plicate, recur- 
ved. Branches mostly long. 
I-H.ehrysea Sehwagrichen. — Hypnum Schw.; Holmgrenia 
Lindb. 1862; Brachythecium lapponicum (Lindb.) Schimper. 
