552 171. Byssoclad. 8. NEMATOMYCEZ. PI. cell. uph. 
3. Byssocladium punctiformis. Dotlike mealmould. 
Thalli in tufts, blackish-grey, opaque, pressed close ; 
very minute, rather torulose ; “branches slightly one-rowed ; 
joints rounded. 
Conferva punctiformis, Roth Cut. 3, 220. 
On neglected windows. 
Thallus rather beadlike, joints as long as broad. 
4. Byssus dendritica. Treelike mealmould. 
Thalli in tufts, blackish-green, bent; branches slender, 
slightly pinnated. ~ 
Conferva dendritica, 4gardh Syn. 96. 
Dematium olivaceum, Albert et Schw. Consp. 
On old books in damp places. 
Tufts circular, a quarter of an inch in diameter. 
B. AspercituipEx. Thallus flocklike, simple or 
branched, mostly jointed, tubular, free; sporidia naked, 
towards the tip of the thallus. 
VI. 172. HAPLARIA. Link. Skein-mould. 
Thalli simple or slightly branched, distant; sporidia 
globular, crowded in places. 
Haplaria grisea. Grey skeinmould. 
Thali scattered, simple, 2-cut, forked, grey. 
Haplaria grisea, Link in Berl. Mag. 3,11. 
On dry leaves of reeds, bur-reeds, &c. 
VII. 173. ACROSPORIUM. Esenbeck.  Chain-mould. 
Thalli simple, aggregated, beadlike at top; joints sepa- 
rating by age. 
Acrosporium monilioides. Necklacelike chainmould. 
Thalli in tufts, snow-white, spreading, powdery. 
Acrosporium monilioides, Esenbeck Syst. 2, 14. 
Monilia hyalina, Fries Obs. Mycet. 1815, 210. 
Botrytis simplex monilis, Alb. e¢ Schw. Consp. 363. 
On the leaves of grasses. 
VIII. 174. VIRGARIA. Esenbeck. Brush-mould. 
Thalli flocklike, upright, stiff; branches forked; spo- 
ridia difluent, globular, crowded towards the tips. 
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