•il i
Rhabdoweisia dcnticulata B r . S c h . Bry. eur. fasc. 33— 36, p. 5, t. 2 (1846). R a b e n h .
Deutsch. kr. fl. ii, S. 3, 129 (1848). W i l s . Bry. br. 51, t. 15 (1855). B e r k . Handb. br.
m. 291, t. 24, fig. 5 (1863). M i l d e Bry. siles. 47 (1869). D e N o t . Epil. bri. ital. 283
(1869). H o b k . Syn. br. m. 36 (1873). S c h im p . Synops. 2 ed. 59 (1876). J u r a t z .
Laubm. oesterr.-ung. 22 (1882).
Autoicous ; in small lax bright-green tufts, fuscous a t base. L e a v e s
g rad ua lly longer upward, flexuoso— and recurvo— patulous, when dry
cir ra te— críspate, sligh tly glossy, broadly linear, obtuse, ca rinate, nerve
vanishing below apex, margin plane or waved, co a rse ly and remotely
tooth ed toward apex ; cells elongato-hexagonal and hyaline at base ;
quadrato-hexag. and chlorophyllose above. C ap s , e re c t, ovato-globose
with a more distinct neck, more solid, fuscescent, when dry and empty,
from a con tra c ted base suburceolate, deeply sulca te ; lid with a subulate
beak, long as caps., te e th from a lan ceolate base, narrowly subulatelinear,
a r ticu la ted , longer, more solid, rufous-purple, persistent.
Hab.— C revices of subalpine rocks. Fr. 6— 7.
On the Isla, Angus [Hooker). Green’s Clough, Todmorden [Nowell 1856) ! ! Grasmere
and Rydal (Whalley 1864) ! Ben Voirlich, Craig Challeach and Glen Lyon (Hunt
1865) 1 ! Hill bell, Westmoreland (Stabler 1868) ! Cader Idris (Wild 1877) ! Aber
and Beddgelert (Hunt 1S65) ! ! GÌenmalur and Upper Lough Bray (Moore). Nire
Lakes, Waterford (Nicholson 1882) ! ! Teesdale (R. Barnes 1881) ! !
More robust than the next species and readily distinguished from it by
the broad pointed, coarsely serrate leaves, and stout persistent peristome.
8. ONCOPHORUS STRIATUS {Schmd.) Lindb.
Au toicous ; lea ves curled, narrow lineal-lanceolate, s ca rc e ly toothed
a t th e a cu te point. Cap s, small ovate, teeth broad a t base, suddenly
subulate, slender and fugacious. (T. X X V I , C.)
Syn.— Grimmia striata S c h r a d . Bot. Journ. ii, 55 (1799). S m it h Fl. brit iii, 1185 (1804), Eng.
Bot. t. 1988. W e b . M o h r Bot. Tasch. 143 (1807). S c h k u h r Deutsch. kr. gew. P. 2, 59,
t. 25 {1810). V o it Musc. herbip. 33 (1812).
Grimmia crispata R o th Fl. germ, iii, P. I, 145 {1800).
Weissia fiigax H e d w . Sp, musc. 64, t. 13, fig. 5— 10 (1801). B r id . Sp. musc. I, 107 (1806),
Mant. 40 (1819), Bry. univ. I, 340 (1S26). S c h w a e g . Suppl. I, P. I, 77 (1811). W a h l e n b .
Fl. lap. 324 (1812). R o e h l . Deutsch. fl. iii, 49 (1813), Ann. Wett. ges. iii, 100. F u n c k
Moost. 15 t. 10 (1821). N e e s H s c h . Bry. germ, ii, P. II, 74, t. 31, fig. 17 (1831)
H u e b e n , Musc. germ. 133 (1833). H a r t m . Skand. fl. D e N o t . Syllab. 234 (1838). C.
M u e l l . Synops. 1, 64g (1849). S c h im p , Synops. 52 (i860). H u s n . M. nord-ouest 42
(1873).
Weissia striata K a u l f . in S t u r m Deutsch. fl. II, heft 16, t. 24 (1815). H o o k . T a y l .
Musc. br.45, t. 15 (1818). G r a y Nat. arr. br, pl. i, 730 (1821). H o o k . Fl. scot. P. 2,
130 (1821), Br. fl. ii, 21 {1833).
Weissia pumila B r id . Bry. univ. i, 338 (1826).
Weissia leptodon P l a u b . in B r id . o p . c . p . 3 4 1 , t. su p p l, r .
Rhahdoweisia fugax B r . S c h . Bry, eur. fasc, 33— 36. p. 4, t. i (1846). R a b e n h . Deutsch.
kr, fl 11, S. 3, I2g (1848). W i l s . Bry. br. 50, t. 15 (1855). B e r k . Handb. br. m. zgo
{1863). M i l d e Bry. siles. 47 (i86g). D e N o t , Epil. bri. ital. 283 (1869). H o b k . syn.
(ils z ) ^ Synops. 2 ed. 58 (1876). J u r a t z . Laubm, oesterr.-ung. z i
Autoicous ; in small cushioned tu fts, deep green above, pale fuscous
and radiculose below. L e a v e s fa s c icu la te , curled when dry, nar rowly
lineal-lanc., g rad ually acuminate, a cute , indistinctly denticulate or
entire at apex, ca rinate, plane at margin, cells at base elongato-rectangular,
pellucid, above quadrate or roundish, chlorophyllose ; nerve
vanishing in the apex. Perich. b ra c ts like the leaves ; caps, on a rather
short pale seta tw isted to left when dry, v ery small, erect, ovate,
short-necked, pale ferruginous, deeply striate ; annulus v ery narrow,
persistent, lid broadly conic with a curved subulate beak ; te e th from a
very broad base, suddenly subulate, erect when moist, incurved when
dry, rufous red, very fugacious.
Male infl. minute, near the female, b ra cts resembling the leaves.
H a b .— Fissures of rocks in subalpine districts. Fr. 6— 7.
Devonshire, Wales, Ireland, N. of England and Scotland.
This little plant is only about a quarter of an inch high, yet its small
yellow green tufts when loaded with capsules are conspicuous in the rock
crevices of most of our mountains. The peristome is so fragile that it usually
disappears as soon as the lid falls off.
C E R A T O D O N B r i d e l .
(Bry. univ. i, 480— 1S26.)
Plants cæ spitant, te rre stria l ; leaves lanceo late , nerved, minutely
areolate, smooth. C a lyp tra cucu lla te , rostrate. Capsule ovate-oblong,
str ia te , sulcate when dry, with a more or less prominent neck, annulate,
pachydermous ; teeth o f peristome arising from a short basal membrane,
i 5, regular c le ft nearly to base into two filiform legs, c lo se ly articulate
below, becoming more remotely so upward and papillose. Der. icepas a
horn, oSovs a to o th , from resembling a g o a t ’s horn.
The genus Ceratodon links the Dicranaceæ to the Tortulaceæ, approaching
the former by the genus Oncophorus in the leaf, capsule and peristome, the
slender legs of the latter with increasing papillosity clearly indicating a
transition to the latter family, strengthened still more by the habit, foliage
and areolation. C. corsions S c h im p . is found in S . Europe, but C. chloropus
B r id . is placed by Lindberg in a new genus Cheilothela, between Swartzia and
Ditrichnm.
C l a v i s to t h e S p e c i e s .
Nerve reaching apex. Caps, subcernuous, with a nodose neck.
Nerve excurrent. Caps, erect, with a short equal neck.
pu rpu r eu s .
conieus.
I. CERATODON PURPUREUS (L.) Brid.
D io ic o u s ; lea ves oblong-lanceola te, margin entire, or sligh tly denticu
la te at point, nerve reachin g apex. Capsu le on a purple seta, subcernuous,
oblong with a short unequal neck, substrumose and sulca te
when dry. (T. X X V I , D.)
S y n . M u s cu s tr ich o id es p a rv u s f o l i i s mu sci v u lg a r is , c a i i tu l i s lon g is a cu tis . D o o d y in R a y
Syn. app. 243 (1690). ‘ ‘