28 EPHEBACEI. [BPHEBE. 
1. E. pubescens Nyl. Syn. i. (1858) p. 90, t. ii. ff. 1, 17-20.— 
Thallus much branched, decumbent, slightly rugulose, somewhat 
shining, olive-green or brownish-black, branches very slender, 
capillary at the apices. Apothecia minute, pale; spores simple or 
1-septate, 0,011-0,016 mm. Jong, 0,003-0,004 mm. thick ; hy- 
menial gelatine either not tinged, or obsoletely violet-coloured (the 
thece tawny-yellow) with iodine-—Mudd, Man. p. 34; Leight. Ann. 
Mag. Nat. Hist. ser. 3, xvi. p. 10, t. 4. ff. 12-14; Lich. Fl. p. 12, 
ed. 3, p. 10; Cromb. Lich. Brit. p. 1; Grevillea, v. p. 124.—Cor- 
nicularia pubescens Gray, Nat. Arr. i. p. 406. Lichen pubescens 
Linn. Fl. Suec. (1745) n. 1126, pro parte; Eng. Bot. t. 2318. 
Tachen evilis Lightf. Fl. Scot. ii. p. 894; With. Arr. ed. 3, iv. p. 47. 
Lichen scaber Huds. Fl. Angl. ed. 4, p. 562. Conferva atrovirens 
Dillw. Br. Conf. p. 60, t. 25. Girardia atrovirens Gray, Nat. Arr. 
i. p. 287. Scytonema atrovirens Ag. Hook. Fl. Scot. ii, p. 78. 
Stigonema atrovirens Sm. Eng. Fl. v. p. 363; Hass. Br. Freshw. 
Alg. p. 227, t. 66. f£. 1—Probably several of these synonyms 
relate to other ‘species, the specimens seen being infertile. 
This grows in close, matted, irregular tufts, which often spread exten- 
sively over the substratum. When young it is more or less suberect, 
becoming at length decumbent or prostrate. From Parmelia lanata, var. 
reticulata, with which it was frequently confounded by the older authors, 
it is externally distinguished when sterile by its softer, transversely rugose 
thallus, and when fertile by the ada which apparently are rare in. 
Britain. The spermogones, which are more frequent, are lateral, the 
sterigmata usually simple, 0,005 mm. long. 0,CO1 mm. thick. 
Hab. On moist shady rocks, especially by streams, in upland and sub- 
alpine situations—Dist, General and for the most part abundant where 
it occurs in the mountainous tracts of Great Britain and Ireland.—B. M.: 
Near Ivy Bridge and Chagford, Devonshire; Roughton, Cornwall; Bar- 
mouth and Dolgelly, Merionethshire ; Snowdon and Llanberis, Carnarvon- 
shire ; Island of Anglesea; Teesdale, Durham; Mardale and near Kendal, 
Westmoreland; Ennerdale Lake, Cumberland. New Galloway, Kirkcud- 
brightshire; Appin and Head of Loch Awe, Argyleshire ; Glen Lochay 
and Ben Lawers, Perthshire ; Achallater and Craig Guie, Braemar, A ber- 
deenshire ; Glen Nevis, Inverness-shire; Loch Shin, Sutherlandshire ; 
Applecross, Ross-shire. Near Belfast, co. Antrim; Dublin Mts.; Coach- 
ford, near Cork; Glengariff and Cromaglown, co. Kerry; Kylemore, 
co. Galway. 
’ 
6. EPHEBEIA Nyl. Flora, 1875, p. 6 (cfr. Cromb. Grevillea,, 
v. p. 125).—Thallus moneecious, cylindrical, intricate ; internally 
as in the preceding genus. Apothecia solitary, paraphyses deter- 
minate, slender, slightly incrassate at the apices ; spores constantly 
simple ; hymenial gelatine wine-reddish with iodine. Spermogones 
discrete, internally as in Ephebe. 
From Ephebe, with which it was formerly confounded, this has now 
been separated, on account chiefly of the apothecia having distinct para- 
physes and conspicuous anaphyses (vide Nyl. 0. c.), as also constantly simple 
spores. These characters seem sufficiently important to entitle it to rank 
as a distinct genus. 
