1. griseum, Lk.; Grev. t. 102./. 1. On dead leaves.
2. flavo-virens, I r . ; Grev. t. 102. /. 3. On dead leaves, etc.
8. album, Desm, {no. 248). On dry but green oak-leaves.
220. SPOROTRICHUM, Lh.*
Flocci ascending, tufted, septate. Spores simple, scattered,
at first concealed.
1. cHorinum, Lk. On dead leaves.
2. anrantiacum, Grev. On dung.
3. sulphureum, Grev. t. 108./. 2. On corks, etc., in cellars.
4. laxum, Grev. t. 108./. 1. On various decaying substances.
R. geochrmm is the conidiiferous state of some Hyqjoxylon.
5. inosculans, B. in Bnyl. Fl. I. c. p. 346. On Thelephox'ee.
6. fenestrale, Ditm, I. c . t . l . On dirty glass.
221. ZYGODESMUS, Cd.
Flocci short, erect, springing from the creeping sterile
threads ; joints here and there cut halfway through.
1. fuscns, Cd. On decayed wood.
222. VIRGARIA, Nees. '
Flocci erect, dichotomous, virgate, black, septate. Spores
minute, scattered over the branches.
1. nigra, Fr.; Grev. t. 274. On fallen branches.
223. BOLACOTRICHA, B. and Br.
Flocci unhranched, jointed, curled at the top. Spores
* I t may be doubted whether there are any genuine speeies of this genus,
whose characters are very uncertain. They are mostly conidiiferous states of
other plants.
large, globose, shortly pedicellate, conglomerated towards
their base.
1. grisea, B . and- Br. {no. 506, loith a fig .). On dead cabbage-stalks.
224. MYXOTRICHUM, Kze.
Flocci branched, bearing towards their base little conglomerated
masses of spores.
1. chartanim, Kze. {no. 121). On damp straw.
2. deflexum, B . {no. 122, with a f ig ) . On damp paper and wood.
225. GONYTRICHUM, Nees.
Flocci branched, here and there bearing knots, from wliich
spring the verticillate, fertile, septate threads, crowned at
their tips with a globose mass of spores.
1. cæsium, Nees; Cd. Le. ii. / . 51. On fallen branches, in woods.
226. MENISPORA, P.
Flocci erect, jointed. Spores heterogeneous, acrogenous,
fusiform or cylindrical, simple, at first joined together in
bundles, then irregularly scattered over the flocci.
1. lucida, Cd. Ic. i. / . 223 {no. 533). On decayed wood.
227. CHÆTOPSIS, Grev.
Flocci erect, jointed, subulate, below branched and verticil-
late, ahove simple and fiagellifprm. Spores cylindrical, springing
from the tips of the branchlets.
1. Wauchii, Grev. t. 236. On decayed wood.
228. ACREMONIUM, Lk.
Flocci creeping, jointed, beset with short patent branches,
each of which bears a spore.
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