J
:
G R IM M IA LEUCOI'HiEA.
D a r k hoary Grimmia.
Class and Order CRYPTOGAMIA MUSCI, imre—Nat. Or*. MUSCI, Jms.
G E N E R IC C H A R A C T E R .
Sela terminalis. Peristomium simplex e dentihus 16 integris vel perforalis (ra-
rissimefissisj cequidistardibus. Calyptra mitriformis.—H ook.
F ruitstalk terminal. Peristome simple, o f 16 entire or perforate (rarely
cleft) equidistant teeth. Calyptra mitriform.
spec ific character.
G rimmia leucophaea; effuso-caispitosa ; caulibus brevibus, subsimplicibus ; f o liis
patentibus, ovatis, acumine incano, longissimo, productis; seta recta, vix
exserta ; theca ovata, opercuh brevi-rostrato.
G. in spreading tu f ts ; stems short, nearly simple; leaves spreading, ovate,
with a very long hoary acumination; fruitstalk straight, scarcely ex-
s e rte d ; capsule ovate, the lid shortly rostrate.
G rimmia leucophiea, Crev. in Wern. Trans, v. 4. p. 87. t. 6.—Crev. Fl. Edin.
p. 235.—Hobson, Musci Brit. v. 2.—Hrumm. Musci Scot. v. 2 . No. 30.
Campylopus laevigatus, Brid. Meth. p. 76. ?
D icrandm piliferum, Schleich. Jide Arnott.
H ab. Subalpine rocks. Near Newburgh, F ifeshire, Mr D rummond. Rocks
on the coast of Fife, Mr W alker A rn o tt . King’s Park, Edinburgh,
abundantly.
Plant at first growing in round tufts, biit rapidly spreading, till the rocks
are covered with one uniform mass, often to a considerable ex ten t; of
a dark green colour, and in dry weather appearing almost black, beneath
the silvery hoariness o f the leaves. Stems about h a lf inch in height,
nearly simple, erect, naked towards the base. Leaves imbricated on all
sides, spreading, ovate, nerved, dull g re e n ; the upper ones produced at
their extremity into a diaphanous, shining, serrulate, hair-like point, at
least thrice as long as themselves; in the lower ones, the diaphanous
point becomes gradually shorter. Fruitstalk straight, so short as not to
elevate the capsule above the summits of the hair-points of the leaves.
Capsule ovate, dark reddish-brown, ev en ; the lid varying from nearly
conical to shortly rostrate. Teeth of the peristome fine red, rather short,
perforated.