BY D. McALPINE. 4 I I 



One of these three will be regarded as a spermogonium and 

 the other two as gonidial receptacles or pyenidia, so that there 

 will be three forms of pyenidia distinguished —(1) what may be 

 called the Antetinaria-forn}, with colourless, oval, unicellular 

 spores; (2) the Gerato-iiycnilial-form, with colourless, rod-like, 

 unicellular spores; and (3) the Pijcni'dd-fonn proper, with 

 coloured, pluricellular pycnospores. 



(4) S pernio lonia. — -The so-called spermogonia with spermatia 

 occur in great abundance along with the other forms. They were 

 so named by Tulasne, but as no male sexual function has been 

 demonstrated here, the name is a misnomer, but it may be retained 

 for distinction' sake. De Bary, however, considers spermatia to 

 be non-germinating gonidia, and that might serve to distinguish 

 them. 



The spermogonia are dark coloured bodies, usually green by 

 transmitted light, oblong, ovate or oval in shape, rounded and 

 smooth at the free end, with irregularly netted surface. They 

 vary in size from 62-190 by 37-77/x. 



The spermatia are hyaline, rod-like, minute, 4-5^ x 1-1^ /x- 



(5) Antennaria. — These are dark green or brownish bodies, 

 variable in shape and size, which may be swollen and flask shaped, 

 with a short neck, or elongated oval or hemispherical, and opening 

 irregularly at the apex. The contained spores are quite distinct 

 from those of any of the other reproductive bodies, and I have 

 utilised the genus-name of Antennaria, which is now generally 

 regarded as a stage in the development of Capnodhim. They are 

 generally in clusters, dark green in colour, with decidedly marked 

 walls, from 75-122 by 70-112 fx. tSometimes they are about as 

 broad as long. 



The spores are hyaline, oval to ovate, with granular contents 

 and 2-5-guttulate, imbedded in mucilage, 5|-6| x 2^-5 /x, average 

 5i X 4 /x. Their size, shape and nature of contents distinguish 

 them from the spermatia. 



(6) Cerato-pycnidia. — I use this name for pale green, greenish- 

 brown to dark brown, often swollen and curved, irregularly 



/ 



Q 



w^ 



