334 Transactions of the Society. 



long, but sometimes shorter, the elaters are sometimes swollen at the 

 commencement of the tapering tips ; spores globose, minutely warted, 

 10-14 fji diameter. 



a. nigripes. Sporangia stipitate, stem blackish, length variable, 



^. sessilis. Sporangia sessile, base narrow. 



7. genuina. Sporangia sessile on a broad base, often compressed, 

 circular or sausage-shaped. 



The above forms cannot be considered as true varieties, the first is 

 most permanent, the other two may frequently be seen passing into 

 each other in the same cluster. 



Kost., Mon., p. 251, figs. 191, 202, 208, 212, 218, 237; Cooke, 

 Myx. Brit., p. 63, figs. 191, 202, 208, 212, 218, 237; Schroeter, 

 p. 112; Sacc, SylL, n. 1497; Kaunk., Myx. Dan., p. 65, t. 3, f. 14, 

 and t. 4, f. 3. 



Exsicc. — Jack, Leiner u. Sitzenberger, Kr. Bad., 419 ! Karst., 

 Fung. Fenn., 288 1 Fuckel, Fung, lihen., 1431 ! Koum., Fung. Gall., 

 1101 ! Kab., Fung. Eur., 799 and 2137 ! Sydow, Myc. March., 487 ! 

 Eab., Fung. Eur., 2138! (as Trichia nigripes, = T. varia, v. nigripes); 

 Fuckel, Fung. Ehen., 1433 ! ( as Trichia nigripes, = T. varia 

 \. nigripes) ; Eoum., Fung. Gall., cent. xiv. n. 1315! (as Trichia 

 chrysosperma, = Trichia varia) ; Karst., Fung. Fenn., 699 ! (as 

 Trichia chrysosperma, = Trichia varia) ; de Thum., Myc. Univ., 

 1999! (as Trichia fallax) ; Sacc, Myc. Yen., 794! 



On bark, wood, moss, &c., Britain (Weybridge ! Kew I Bishops' 

 Wood, Highgate ! Staunton, Notts ! Bristol ! Scarboro' ! Carlisle ! 

 Abergavenny! Appin, N.B. !) ; France! Denmark! Germany! Finland! 

 Italy ! Bohemia ! United States ! Tasmania ! New Zealand ! 



A well-marked species without marked affinity with any known 

 species, difiering considerably in the form of the sporangia, and 

 presence or absence of a stem, but readily recognized by the minutely 

 warted spoies and cylindrical elaters with distant, prominent spirals. 

 In the specimen in Eab.,Fung. Eur.,n.2137 (Brit. Mus. copy), the warts 

 show a tendency to become elongated and flattened, thus forming a 

 transition to the section with the spores having bands not connected 

 into a network, but in other respects the plant is typical. The elaters 

 are rarely slightly bifurcate at the tip, as shown by Rostafinski, fig. 

 237. The plant is pure white when immature. 



(Eostafioski's Synonyms.) 



a. Trichia varia, v. nigripes. 



Mucilago minima, Mich., t. 96, f. 4 (1729). 

 Emholus alhissivius, Hall, Herb., p. 8 (1742). 

 Embolus, Hall, No. 2138 (1768). 

 Mucor pyriformis, Scop., Fl. Cam., 492 (1772). 

 Mucor pomiformis, Leers, Fl. Herb., 1136 (1775). 

 Mucor lacteus. Leers, Fl. Herb., 1132 (1775). 

 Stemonitis pyriformis, Willd., Fl. Ber., 409 (1787). 



