Let aay ee 
Pen Pee ae ge ee na 
. 
; 
: 
; 
1900] MOSSES OF NORTH AMERICA 23 
A very distinct species of the subgenus Campy/ium, at once characterized 
by the very dense tufts, the stems entirely prostrate and divided into pinnate 
branches, the leaves much crowded, recurved-squarrose from a more erect 
base, minutely denticulate all around, and with a much shorter point than in 
the allied species. 
HypnuM CUPRESSIFORME L, var. RESUPINATUM Sch. Coroll. 133. 
(HZ. resupinatum Wils., Bryol. Brit. 398). 
Newfoundland: Chance cove (Rev. A. C. Waghorne, 1891). 
This variety, considered by many authors as a distinct species, is charac- 
terized by the leaves not falcate-secund, imbricate or homomallous and 
pointing upward, and the capsule erect and symmetrical or very slightly 
curved or inclined. It is connected with the type by intermediate forms. 
Hypnum MOLLE Dicks. var. SCHIMPERIANUM Sch., Syn. 775 
[ed. 2]. (4. Schimperianum Lorentz, Moost. 123, pi. 5, fig. €). 
Northwestern Montana: in the vicinity of Lake MacDonald, Flathead 
county (J. M. Holzinger and J. B. Blake, 1898). 
Differs from the type by the longer and more slender stems, naked below, 
and by the leaves smaller and with a shorter acumen. 
STENAY and Le HAvreE, FRANCE. 
EXPLANATION OF PLATES II-V. 
Nachet’s objectives 3 and 6, oculars 1 and 3, with camera lucida, All 
drawings are reduced ¥ in photo-engraving. 
PLATE IIl.—1. Dichodontium Olympicum. a, entire plant, nat. size; 
6, 6, b, leaves X 32; c, basal areolation X 135; 4, marginal areolation in the 
upper part X 260; e¢, transverse section of the nerve X 260; f, capsule ripe 
and deoperculate x 26; g, a tooth of the peristome X 105; h, part of the 
same in the upper part X 285.—2. Desmatodon systylioides. a, entire plant, 
nat. size; 4, 4, 6, leaves X 32; c, marginal areolation in the middle X 135; 
d, areolation of the upper part X 135; é, capsule ripe X 32; J, capsule unripe 
X 32. 
PLATE II].—1. Dicranella Howei. a, entire plant, nat. size; b, 6, 6, leaves 
X 32; c, apex of a leaf X 135; d, basal areolation X 135; 4% marginal areo- 
lation in the middle of a leaf X 135; 4, capsule in moist state X 32; g, Cap- 
sule ripe and deoperculate, in dry state X 32.— 2. Dicranella laxiretis. a, 
entire plant, nat. size; 4, 6, leaves X 32; ¢, basal areolation X 135; d, mar- 
ginal areolation in the middle X 135; ¢, areolation of the upper part X 135; 
f, capsule X 32; g, portion of the annulus X 135; 4,a tooth of the peristome 
* 135 
