I ^ I L Y M O D O N g l a u c e s c e n s .
Glaucous Didymodon.
k .
Class a™ O rb fr CRYPTOGAMIA MUSCI, L in n .-S .x . Orb. MUSCI, Juss.
GENERIC CHARACTER.
Seta tcrrdnaUs Peristornium simplex e dentibus I 6 vel 32, per paria approxi-
rnatis vel ad basin umtis. Calyptra dimidiata.— H o o k .
Seta terminal. Peristome simple, o f 16 or 32 teeth, approaching in pairs,
or united at the base. Calyptra dimidiate.
s p e c i f ic CHARACTER.
D ioymodon gla u c esc en s ; caule breviuscula vel ehngato, suhramoso, erecto-
Joins (A«ucescentibus)lanceolato.acuminatis, subpate ntibus, nervo percur-
rente ; theca oblonga, operculo brevi. '
D. stem either short or elongated, somewhat branched, erect; leaves (glau-
cous), lanceolate-acuminate, subpatent, the nerve passing to the apex •
theca oblong, with a short lid.
T r ic h o s tom um glaucescens, Hedw. St. Crypt. 3. p. 103. t. 37. B .-E ju s d Sp
Muse. p. I l 2. - B r i d . Muscol. 2. p. 123.~Sohwaegr. Suppl. l. p. 145. -
Sturms Deutschl. Fl. cum icone— De Cand. Fl. Franç. v 6 p 2 1 6 -
Srvartz, Muse. Suec. p. 30— Smith, Fl. Brit. p. 1245— E W . Sim. p. 171
Engl. Bot. t. 2381. (b a d .)—Punch, Deutschl. Moose, p. 25. t. 17.
Bhyum glaucescens, Dicks. Crypt. Fasc. 4. p. 10.
H ab^ On mountains in Scotland, Mr D ickson. Clova Mountains Mr
D rummond. I t produces fructification in winter, according to H edwig -
in summer, according to F unck. ”
Pfató growing in dense tufts, chiefly i„ the crevices of rocks. Stems from
a few hues to two inches in length, somewhat branched, erect, thickly
set with leaves. Leaves rather spreading, reddish-brown below, glaucous
green above, lanceolato-acuminate, unequally serrulate at the apex
somewhat carínate, and furnished with a percurrent nerve: the u p k r ’
most ones are considerably the longest. Seta 3-4 lines long. Theca yk-
rymg from ovate to oblong, or even oblong-cylindrical, reddish. L id
with a short nearly straight beak. Perislom. of 32 long, fine red teeth,
imited at the very base in pairs. Calyptra dimidiate, very deciduous.
Sporules globular, sometimes with a distinct pedicel.
In consequence of a singular oversight, this interesting moss
has not found its way either into the Museologia Britannica of
VOL. I I I .