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286 6. Scyton. 1. HYDROPHYTiE. PL cell. aph.
Conferva myochrous, var. Dillvo. Syn. 3T ; Engl. But. 1555.
Scytonema myochrous, jigurdh Disp. ed, I, 38.
Caves and sides of rocks.
Tufts green when dry ; threads olive-yellow, rather
weak, slightly attenuated, branches coming out at right
angles ; sporidia black, rarely globular.
2. Scytonema seriatum. Rowed Leather-thread.
Tufts very thickly entangled, blackish brown ; threads
slender, purplish brov/n; IraJiches in pairs, facing one way;
sporidia roundish.
Conferva myochrous, Dillw. 19; Engl. Bot. 1555. -
Conferva scriata, Wahl Ft. Lap. 984.
Scytonema myochrous inundatum, jigardh Disp, ed. 1,39,
Alpine inundated places.
Tufts a quarter of an inch thick, wool-like ; threads twice
as long.
iS. simplex. Tufts brown-green ; thread simple, very
rarely emitting branches.
Scytonema myochrous simplex, ^gardh Disp. ed. 1, 38.
S. Scytonema ocellatum. Eyed leather-thread.
Tufts very dense, blackish ; threads very slender, orange,
weak ; branches facing one way, simple ; sporidia beadlike.
Conferva ocellata, Dillta. Syn. CO ; Engl. Bot. 2530.
Scytonema myochrous ocellatum, yfgard/i Disp. ed. 1 , 38.
Scytonema ocellatum, Lyngbye Uydr. Dan. 97.
Floating wood and fresh-water plants in alpine lakes.
Threads slightl}' bent ; branches sometimes solitary.
b. Branches rodlike,
4. Scytonema comoides. IVigUke leather-thread.
Tufts loose, iron black ; threads bent, hair-brown
branches single, rather distant, ascending, truncated at the
tip.
Conferva rufa. Roth Cat. 3, 280 ?
Conferva araneosa, Mohv in Schrad. Journ. 1806, 196.
Conferva comoides, DiUie. 27 ; Engl. Bot. 1700.
Scytonema comoides, Agardli Syn. 112.
Stones on the shores, and marine plants.
Ijifts oblong; threads much branched, an inch long;
sporidia beadlike.
5. Scytonema radicans. Rooting leather-thread.
Tufts dark olive-brown, loose ; threads creeping, straight,
rather stiff; branches single, simple, scattered, upright,
blunt, thinner at bottom.