346 FUNGI. [Sporotrichum, 



ininal obovato-cylindric septate. F7\ Syst. Myc. v. 3. p. 414. 

 "—Botryiis agaricina, Lk. Sp. \. p. 84. Ditm. I. c.t.5\, Grev, 

 Fl Ed, p. 468. Sc, Crypt, Fl, t, 126./. \,—Mucor dendroides, 

 £ull.t,50i^.f, 9. 



On decaying Agarics, Boleti, Polypori, &c. Very common. — 

 The sporidia are very rarely septate, at least I have never been able to 

 meet with them in that state ; Fries, however, states that when full 

 grown they are so, and that they acquire, moreover, an elongated form. 



129. Sporotrichum. Lli. Sporotriclmm. 



Flocci erect or ceespitoso-convergent, at length flaccid and 

 decumbent, branched, septate, uniform. Sporidia free, simple, 

 at first interwoven with or covered by the flocci, at length 

 scattered over them. — Name, dvro^o;, seed, &o&, a hair,^ 



1. S. nigrum, Fr. (black SporotricJmni) ; flocci erect dicho- 

 tomously virgate black attenuated at their apices, sporidia 

 globose of the same colour. Fr. Syst. Myc. v. 3. p, 416. — 

 Botrytis nigra, Lk. Sp. \, p, ^^, Grev. Sc. Crypt. Fl. t. 274. 

 — Virgaria nigra, Nees, Syst.f. 52. 



On dead trunks, branches, &c. About Edinburgh, jDr. Greville. Not 

 frequent. — The Appin station belongs to the following species, which, in 

 addition to the curious but possibly accidental character of having the 

 branches of distinct plants united longitudinally, half a dozen individuals 

 being thus connected together in the most irregular way, is distinguished 

 by the elliptic sporidia. 



2. S. inosculans. Berk, (iimher-broum Sporotrichiini) ; effuse 

 dark umber-brown forming a velvety crust, flocci erect virgate, 

 sporidia minute elliptic. — Botrytis inosculans, Carm, MSS. — 

 B, umhrina, Klotzsch in Hook. Herb, 



On Thelephora avellana. Appin, Captain CarmicJiael. 



3. S.geochorum, Desm. (olive-grey Sporotrichiini); flocci erect 

 very much branched dichotomous virgate olive-grey, sporidia 

 globose minute. Besm. exs. n. \\7 , collaps. {fide Fr.). Fr. 

 Syst. Myc. v. 3. p. 416. — Bat. Polyspora, Ditm, I. c. t. 35. Lk, 

 Sp. l.p. 56. 



On rotten wood. Stibbington, Hunts, llockingham Forest, Norths. 

 Hev. M. J. Berkeley — Sporidia subglobose, yellowish when viewed 

 by transmitted light. 



4. S. chlorinum, Lk. (yellow-green Sporotriclmm) ; erect 

 intricate, flocci dense very soft simple and branched, sporidia 



* Nothing can be more difficult than to distinguish between true Sporo- 

 tricha and the mycelia of other fungi. Fries gives as a practical rule, that all 

 species with expanded centrifugal flocci are mycelia; but that manv are equally 

 myceha with erect flocci, which are the more deceptive in consequence of their 

 being accompanied by minute dust-like pellucid particles {conidia). Few true 

 species have bitherto been observed in Great Britain, and amongst the mvriads 

 ot bporotrichoid forms which occur everywhere, future observers, especially 

 It unpractised, should be very cautious in the admission of species. 



