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348 OUTLINE S OF BB IT ISH FUNGOLOGY.
4. roseus, Lk. On damp paper, carpets, etc.
5. mollis, B. ; Eng. El. I. c. p. 340. On dead leaves.
6. virens, Lk. On Agarics.
208. NEMATOGONXJM, Desm.
Threads clavate at tlie apices, and bearing necklaces of
spores on distinct scattered spicules.
1. anrantiacum, Desrn. {no. 337, with a fig.). On bark, etc.
2. aureum, B. Aspergillus aureus, B. in Ihg. El. On bark.
209. RHINOTRICHUM, Cd.
Threads erect, articulate, clavate above, and bearing spores
attached to spicules.
1. Bloxami, B. and Br. {no. 541, with a fig.). On dead wood.
3. Thwaitesii, B. and Br. {no. 543, with a fig.). On the naked ground.
3. Opuntia, B. and Br. {no. 761, with a fig.).
210. BOTBYTIS, Mich.
Threads septate, irregularly or dichotomously branched,
hyaline or coloured. Spores terminal.
1. Tilletii, Desm. {no. 529). On leaves, naked soil, etc.
3. citrina, B. (no. 27, with afig). On dead twigs.
3. Jonesii, B. and Br. {no. 760, with a fig.). On dung.
4. terrestris, P. {no. 240); Grev. t. 257. On the naked ground.
211. PERONOSPORA, Cd.,* Casp.
Parasitic threads mostly inarticulate. Spores of two kinds :
* Since the discovery o f the second form o f fi-uit, o f which ' Corda knew
nothing, it is expedient to adopt his generic name, which I do w ith reluctance,
as P . pa ra sitica seems more entitled to tho name o f B o try tis than other allies,
after Po lya ctis is removed. Cerda’s Peronospora, moreover, included only
such species as have non-septato tlireads.
MUCEDINE S . 349
1, on the tips of the branchlet ; 2, large, globose, on the
creeping spawn. {Artotrogus, Mont.)
1. parasitica, Cd.; Sow. t. 400, /. 7. On Crucifera.
2. destructor, Casp. {no. 239, with a fig.). On leaves of onions.
3. infestans, Casp. {no. 521). On potatoes, producing the well-known
potato murrain.
4. ganglioniformis, Casp. {no. 526). On lettuces.
5. arborescens, Casp. {no. 525). On poppy.
6. Viciae, Casp. {no. 534). On peas, tares, etc.
7. Urticas, Casp. {no. 522). On nettles.
8. Arenariae, Casp. {no. 533). On Arenaria trinervis.
9. macrospora, Casp. {no. 527). Botrytis crustosa, Fr. On Umbellifers.
10. grisea, Unger (no. 5 28). On Veronica Beccabunga.
11. effusa, Casp. On spinach.
12. violacea, B. On petals of Scabiosa arvensis.
18. curta, Casp. {no. 128, w«/; a fig). On anemone.
212. VERTICILLIUM, Lk.
Plocci septate, hyaline or coloured. Branches verticillate.
Spores apical.
1. apicale, B. and Br. {no. 531, with a fig). On fallen oak-branches.
2. nanum, B. and Br. {no. 532, with a fig). On pears.
3. epimyces, B. and Br. {no. 583, with afig). On Elaphomyces.
4. distans, B. and Br. {no. 534, with a flg). On dead herbaceous stems.
V. lateritium appears to be only a condition of Acrostalagmus.
213. HAPLARIA, Lk.
Flocci simple or forked, jointed. Spores scattered over the
tips of the threads.
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