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1. E. pubescens Nyl. Syn. i. (1858) p. 90, t. ii. if. 1, 1 7 -2 0 .—
ïh a llu s much branched, decumbent, slightly rugulose, somewhat
shining, olive-green or brownish-blaok, branches very slender,
capillary a t tho apices. Apothecia minute, pale ; spores simple or
1-septate, 0 ,0 1 1 -0 ,0 1 6 mm. long, 0 ,0 0 3 -0 ,0 0 4 mm. th ic k ; hy menial
gelatine either not tinged, or ohsoletely violet-coloured (the
thecæ tawny-yellow) with iodine.—Mudd, Man. p. 34 ; Leight. Ann.
Mag. Nat. Hist. ser. 3, xvi. p. 10, t. 4. ff. 1 2 -1 4 ; Lioh. El. p. 12,
ed. 3, p. 10 ; Cromb. Lioh. Brit. p. 1 ; Grevillea, v. p. 124.— Cor-
nioularia pubesceyis Gray, N a t. Arr. i. p. 406. Lichen pubescens
Linn. El. Sueo. (1745) n. 1126, pro p a rte ; Eng. Bot. t. 2318.
Lichen exilis Lightf. Fl. Scot. ii. p. 894 ; With. Arr. ed. 3, iv. p. 47.'
Lichen sccther Huds. Fl. Angl. ed. 2, p. 562. Conferva atrovirens
Dillw. Br. Conf. p. 60, t. 25. Girardia atrovirens Gray, Nat. Arr.
i. p. 287. Scytonema atrovirens Ag. Hook. F l. Scot. ii. p. 78.
Stigonema atrovirens Sm. Eng. F l. v. p. 363 ; Hass. Br. Freshw.
Alg. p. 227, t. 06. f. 1.—Probably several of these synonyms
relate to other species, th e specimens seen being infertile.
^ This grows in close, matted, irregular tufts, which often spread extensively
over the substratum. When young it is more or less suberect,
becoming at length decumbent or prostrate. From Parmelia lanata, var.
reticulata, w ith which it was frequently confounded by the older authons,
it is externally dlstiiiguished when sterile by its softer, transversely rugose
thallus, and when fertile by the apothecia, which apparently are rare in
Britain. The spermogones, which are more frequent, are lateral, the
sterigmata usually simple, 0,005 mm. long. 0,001 mm. thick.
Ilab. On moist shady rocks, especially by streams, in upland and subalpine
situations.—Distr. General and for the most part abundant wliere
it occurs in the moimtainous tracts of G reat Britain and Ireland.—B. M. :
Near Ivy Bridge and Chagford, Devonshire ; Iloiightoii, Cornwall ; Barmouth
and Dolgelly, Merionethshire ; Snowdon and Llanheris, Carnarvonshire
; Island of Anglesea ; Teesdale, Durham ; Mardale and near Kendal,
\ \ estmoreland ; Eniierdale Lake, Cuiiiberland. New Galloway, Kirkcud-
hright.sliii e : Appin and Head of Loch Awe, Argyleshire ; Glen Lochay
and Ben Lawers, Perthshire ; Achallater and Craig Guie, Braemar, Aberdeenshire
; Glen Nevis, Iiiveriiess-sliire ; Loch Shin, Sutherlandshire •
Applecross, Ross-shire. Near Belfast, co. Antrim ; Dublin Mts. ; Coach-
lord, near Cork ; Glengariff and Cromaglown, co. Kerrv ; Kylemore
CO. Galway. " ’
6. E PH E B E IA Nyl. Flora, 1875, p. 6 (cfr. Cromb. Grevillea,
V . p. 125).—Thallus monoecious, cylindrioal, in tric ate ; inte rn ally
as in the preceding genus. Apotheoia solitary, paraphj'ses determinate,
slender, slightly incrassate a t th e apices ; spores constantly
simple ; hymenial gelatine wine-reddish w ith iodine. Spermogones
discrete, in ternally as in Ephebe.
From Ephebe, with which it was formerly confounded, this has now
been separated, on account chiefly of the apothecia having distinct paraphyses
and conspicuous anaphyses {vide Nyl. I. c.), as also constantly simple
spores. These characters seem sufficiently important to entitle it to rank
a s a distinct genus.
1. E. hispidula Nyl. Flora, 1877, p. 321.—Thallus decumbent,
very much branched, rugulose, opaque, spinulose or vorruoulose
towards the apices, olive-green or dark-brown. Apotheoia ex ternally
subgloboso-tuberoulose, pale, th e opithecium impressed ;
spores oblongo-ellipsoid, 0 ,0 1 0 -0 ,0 1 5 nim. long, 0 ,0 0 4 -5 mm.
thick.—Cromb. Grevillea, xii. p. 89 ; Journ. Bot. 1885, p. 195.— Cor-
nicularia hispidula Aoh. Lich. Univ. (18 1 0 ) p. 617. Gornicularia
pubescens p . hispidula Gray, Nat. Arr. i. p. 406.—To this belongs
also Ephebe spinulosa F r. fil.fid e Nyl. 1. o.
The thallus is somewhat stellately expanded, with the branches verti-
cillately proliferous. From Ephebe pubescens it differs in being hispid and
monoecious, as also in the structure of the apothecia. Of the few British
specimens seen, only one is sparingly fertile.
Ilah. On damp quartzose and schistose rocks in subalpine districts.—
Distr. Apparently local and scarce, being known only from N. Wales, and
the S. and Central Grampians, Scotland.—B. M. : Cader Idris, Merionethshire
; Snowdon, Carnarvonshire. Ben Lawers and Craig Tulloch, Perthshire.
Subsp. E. Martindalei Cromb. ex Nyl. Flora, 1883, p. 104.—■
Thallus scarcely spinulose ; apotheoia with the receptacle smarag-
dino above (or somewhat bluish in th in section) ; spores 0 ,0 0 9 -
14 mm. long, 0 ,0 0 4 -6 mm. thick.— Cromb. Grevillea, xii. p. 89 ;
Journ. Bot. 1885, p. 195.
This differs from the type, of which, as suggested by Nylander (I. c.), it
is almost a variety, in the nearly smooth thallus and the colour of the
receptacle. ^ From Ephebe pubescens it could consequently with difficidty
be distinguished in a sterile condition.
liab. On moist rocks in mountainous districts.—Distr. Very local and
scarce, having been gathered only in N.W. England.—B. M. : Mardale,
Westmoreland,
Tribe IV. MAGMOPSEI Nyl. Flora, 1875, p. 103.
Thallus pyrenopsidian, consisting of syngonimia; gonimia moderate,
with o u t order. Apothecia forming a p eridium; spores
8næ, oviform, in oblong thecæ. Spermogones not seen rightly
developed.
This is a somewhat peculiar tribe, distinguished from all others in this
family by the apothecia (if not parasitic, as Nylander is now rather
inclined to think) con.stituting p e rid ia ^ l\& t is, a closed pyrenium without
any true ostiole. I t consequently holds an analogous relation among
the Ephehacei to Peridiei among the Lkhenacei. From the Phylliscodei
it differs in the characters of the apothecia and the gonimia.
7. MAGMOPSIS Nyl. llo r a , 1875, p. 103.—Thallus indeterm
in a te; syngonimia glomerulose or granuloso-difform, greenish-
yellow, gonimia pale-glaucous or concolorous with th e re s t of the
thallus. Apothecia small, the peridium (under th e microscope)