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RESEARCHES ON FUNGI 



Sporangiophores erect, not more than 1 mm. high, collected into 

 groups of two or three (even four or five), all rising from contiguous 

 buried intercalary trophocysts. Subsporangial swelling subglobose, 

 colourless. Sporangium globular, about as wide as the subsporangial 

 swelling, with the membrane of the upper part cutinised and 



Fig. lOG. — Pilobolus nanus v. Tiegh. A, three fruit-bodies. B, two basal swellings 

 p p, and C, three basal swellings p p p, between two apophyses a a. D and E, 

 optical sections through the upper part of a fruit-body, before and after 

 dehiscence of the sporangium respectively ; c, yellow cuticularised wall of the 

 sporangium ; d, diffluent region ; /, limiting ring of cuticularisation ; g, jelly ; 

 k, columella. F, spores : a, resting ; b, swollen ; c, germinating. G, resting 

 spores (azygospores), with tuberculate membranes, on a mycelium ; o, in 

 section to show the thick cell-wall. Copied by A. H. R. Buller from van 

 Tieghem's Troisieme Memoirc. Magnification, not given. 



yellow ; columella depressed-convex ; spores globose, colourless, 

 3-5-4 [X in diameter. 



On excrement of rat. France. 



Not observed by anyone but van Tieghem. The protoplasm of 

 the sporangiophores is said by him to be colourless, as is also that 

 of the mycelium. On the mycelium grew oblong-roundish, faintly 

 yellow, coarsely verrucose chlamydospores, 15-20 [x in diameter, 

 resting on short curved pedicels ; these are probably azygospores. 

 The sporangia were shot off as in other Piloboli and stuck to the 

 surrounding objects, while still yellow. When the explosion took 



