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GRIMMIA spiRAijs.
Spwal piliferous Grimmia.
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Class a n d O u d e r CRYPTOGAMIA MUSCI, Z i« ,î._N at. Ord. MUSCI, J uss. ^ c.
G EN ERIC CHARACTER.
Seta terminalis. Perislomimn simplex e dentibus 16 integris vel perjhratis ( rarissime
fissis ) , mquidistantibus. Calyptra mitriformis.— ïiooK.
Fruitstalk terminal. Peristome simple, of l6 entire or perforate (rarely-
cleft) equidistant teeth. Calyptra mitriform.
S PEC IF IC c h a r a c t e r .
G r im m ia s p ir a l is ; “ caulibus elongatis pulvinatis, foliis suhtrifariis lanceolatis
in acumen longum diaphanum piliforme productis, carinatis, siccitate tortis,
capsula mata lævi, seta curvata."— H o o k .
G. stems elongated, pulvinate, leaves subtrifarious, lanceolate, lengthened
out into a long hair-like diaphanous point, twisted when d ry ; capsule
ovate, smooth ; fruitstalk curved.
G rim m ia spiralis, Hook. ^ Tayl. Muse. Brit. ed. 2. U&S.—Brummmd, Muse.
Scot. V. 2. No. 29.
H ab . On rocks in the Scottish Highlands, at a considerable elevation.
Throughout the whole of the Breadalbane range of mountains ; in fruit
upon Craig Challeach, Dr H ooker, Mr W a lk e r A r n o t t , and D r G r e v
il l e . Mountains of Clova, Mr D rummond.
Plant growing in rounded masses two or three inches in breadth, and conspicuous
from its hoariness. Stems 1-2 inches long, slender, slightly
branched. Leaves subtrifarious, suberect, lanceolate, acuminate, carinate,
margin slightly reflexed, the nerve running beyond the gradually
lengthened point, and forming a hair-hke diaphanous extremity. The
leaves in the dry * state are twisted round the stem in a spiral manner,
as in G. torquata, b u t not in so great a degree. Colour dark or yellowish
green at the summit, dark greenish-brown below. Fruitstalk very
short, scarcely rising above the points of the leaves, curved. Capsule
pale yellow-brown, ovate, smooth, the lid convex, with a very short,
obtuse beak. Teeth of the peristome red, lanceolate, irregularly cleft into
two or even three segments.
• In the description of Grimmia torquata, 1.199. the reader is requested to substitute
the term dry in the place of moist (the 9 th line from the bottom of the page).
VOL. IV.