552 171. Byssoclad. 8 . NEMATOMYCEiE. PI. cell. aph. 
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 bead)ike, joints as long as broad. 
4. Byssus dendritica . Treelike mealmould . 
Thalli in tufts, blackish-green, bent; branches slender, 
slightly pinnated. 
Conferva dendritica, Agardh Syn. 96. 
Dematium olivaceum, Albert et Schw. Consp. 
On old books in damp places. 
Tufts circular, a quarter of an inch in diameter. 
* 
B. Aspergillide^e. 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. 
Thalli 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. et 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. 
