i i ; r
•í í
«II ,
ing, with branches erect, rooting at base and sometimes at apex,
comjilaiiate-ioliate : leaves distichous, spreading, ovate-lanceolate
at base, acuminate or subpiliforin, long-apiculate, concave, very
entire, ecostate, not decurrent at base ; areolation narrow, uniform
; pericliætial leaves half-clasping at base, oblong-ovate,
acuminate, entire: capsule subcernuous, obovate, long-necked,
enlarged at the orifice and campanulate when dry, p.alo brown ;
pedicel short, purple ; operculum eonic.al, rostellate ; teeth distantly
articulate; cilia short, robust, unequal; ammlus narrow,
simple. — New Zeal. FL ii. 476 (name only). Plagiothecium
Muellerianum, Schimp. Syn. 584 ; Sulliv. Icon. Muse. Suppl. 89,
t. 06.
riAB. Rocky ravines; New Jersey (Austin); AYhite Mountains
[James]', Ohio [Lesquereux],
108. H. S u lliv an tiæ , Schimp. Ms. Dioecious: plants in
comjiact ])alo green or yellowish shining tufts ; stems erect,
with few branches, scattered leaves, and radicles at base: leaves
crowded, subimbricate, oblong-ovate, abruptly and shortly filiform
acuminate, very concave, thin, glossy, serrulate toward the
apex ; costa bifid, one of its branches sometimes longer; areolation
very long and narrow, the basilar a little shorter and
broader; perichætial leaves erect, the inner oblong, narrowly
aouminate : capsule cyliiidric.al-oblong, constricted at the neck,
erect, regular, subinclined, smooth when dry ; operculum long-
conical, obliquely short-rostrate ; cilia in pairs, stout, and nearly
as long as the entire segments ; annulus simple, large. —• Sulliv.
Mosses of U. States, 80, and Icon. Muse. 207, t. 126 ; Sulliv. &
Lesq. Muse. Bor.-Amer. Exsicc. n. 355. Plagiothecium Sulli-
vantice, Schimp. in Bryol. Eur. Plagiothecium, 16.
IIa b . Moist sandstone rocks and shaded banks iu pine woods, Ohio.
The species publisheil under the auMiority of Schimper is, as Sullivant
remarks (Icon. Muse. 1. c .), perhaps too insufBeiently cliaraeterized to be
separated from Plagiothecium Roeseanmn, Bruch & Scliimp. Bryol. Eur.
t. 504, ami he adds tliat tlie better course might be to reduce both of them
to II. sylvaticum, a very variable species. The appearance of this moss
ami its mode of growth are strikingly different from those of II. sylvaticum,
and, even if a variety, the variety is constant in its characters.
It seems, tlierefore, justifiable to preserve a species made by Scliimper
to honor the name of a very acute lady bryologist, who for years assisted
her husband in his researches.
109. H. sjrlv aticum , Huds. Dioecious; tufts loose, soft,
depressed, stoloniferous, dark green; leaves flat, distant, the
lateral spreading, decurrent, broadly ovate-lanoeolate, short-
acuminate, concave, obsoletely costate, very entire ; upper areolation
narrowly rhomhoidal, gradually longer and narrower
downward ; the cells of the decurrent angles quadrate-oblong and
numerous: male plants mixed with the sterile or iu separate
tufts ; perichætial leaves short, oblong-lanceolate, acute or short-
acumiiiate : capsule long-pedioellate, cernuous aud horizontal,
cylindrical, contracted into a long neck, sulcate, striate and
constricted under the orifice when dry ; operculum long-beaked,
the beak curved upward ; peristome large ; the teeth bright
orange at base; annulus double. —FL Angl. 419. Plagiothecium
syluaticum, Bruch & Schimp. Bryol. Eur. t. 503 ; Lindb.
Faun. Flor. Fenn. ix. 28.
V,ar. o rth o c la d ium . Branches shorter, erect, densely
crowded: leaves shorter, less complánate, a little shining: capsule
ov.al, cernuous. — Schimp. Coroll. 115, as Plagiothecium.
P. orthocladium, Bruch & Scliimp. Bryol. Eur. t. 504.
H a b . Dense shaded rocks, and clayey ground in woods; tlie variety
more rarely found.
no. H. u n d u la tum , Linn. Dioecious : plants large, widely
cespitose, wliitish green ; stems very long, prostrate and arcuate,
rooting at the base of the innovations ; branches curved downward
or ascending, densely foliate, tumid : leaves imbricate-
oomplanate, small and ovate toward the base, gradually larger
above and ovate-oblong, more or less abruptly aeumin.ate,
narrowed and decurrent at base, transversely undulate-rugose
from the middle upward, serrulate at the apex, glossy ; costa
short, double ; areolation very narrowly rhomhoidal, small and
quadrate at the decurrent angles; lower perichætial leaves
recurved, the upper sheathing, longer acuminate, thin, narrowly
costate : capsule oblong-cylindrical, arcuate, deeply ribbed when
dry, enlarged at the orifice, dirty yellow, passing to brown with
age; pedicel long, flexuous; operculum large, rostrate; segments
slightly split along the keel; cilia three, stout, nearly
as long as the segments; annulus double. — Spec. PL 1124;
Schwaegr. Suppl. iii. t. 282»- Plagiothecium undidatum, Bruch
& Schimp. Bryol. Eur. t. 506 ; Lindb. 1. c. 27. Stereodon undu-
latus, Mitt.
H a b . On wet mossy ground, in deep woods; Oregon (Pickering,
Hall), and California (Bolander); Fort Coivilie (Lyall).