REVISION OF ENDOGONEAE. 329 



Von Hohnel, who examined the original types, vouches for the 

 identity of his Sphacrocrccis Javanicum and of Xcnomi/ccs ochraccns 

 Ces., with Sclcrocystis coremioidcs B. & Br., and an examination of the 

 type material of Ackermannia which M. Patouillard has very kindly 

 communicated seems to bear out his conclusion that this genus must 

 also be regarded as a synonym. It appears to belong in the Endog- 

 oneae, the characters of its spores and hyphae being in general similar 

 to those of Endogone. The three species seem to conform to a well 

 marked generic type, and are distinguished from Endogone in produc- 

 ing numerous small sclerotium-like sporocarps in which a well defined 

 sporogenous layer is very characteristic, the large spores lying side by 

 side with their long axes directed radially from a central columella-like 

 region. 



Von Hohnel states that the sporocarps in his material, which was 

 found in the Buitenzorg garden growing on bits of wood and sticks, 

 were "zu einer festen porosen IVIaase verwachsen." They are repre- 

 sented as short-stalked, 500-600 yu broad, hard, dull yellow to grey- 

 green, sometimes becoming superposed through distal proliferation. 

 The closely woven hyphae are said to be septate, those of the short 

 stalk 8 M in diameter, those which occupy the central portion of the 

 sporocarp about 4 fx, as are those which form a well defined outer layer; 

 their free terminations showing no indication of special or charac- 

 teristic modification. The spores as represented are placed side by 

 side, as already described, immediately beneath this outer layer, and 

 are long oval to long elliptical or even clavate, 60-90 X 20-50 jjl. 

 Their walls appear to be thin, and the contents is either finely granular 

 or wholly lacking. 



The type material of Berkeley and Broome in the Kew Herbarium 

 was found in Ceylon and was regarded by Fetch (1908) p. 116, as a 

 sclerotium. Later, however, (1912) p. 282, he confirms the statement 

 of von Hohnel as to its identity. The type of Cesati, now in the 

 Herbarium of the Royal Gardens at Rome, was collected by Beccari 

 in Borneo. 



ScLEROCYSTis Dussii (Pat.) von H. 



(Figs. 83-85.) 



von Hohnel (1910), p. 390. 



Ackermannia Dussii Patouillard (1902), p. 181, figs. a-g. 

 Sphaerocreas Dussii von Hohnel (1909), p. 401. 



This species, which was collected by Ackermann in Martinique and 

 by Duss near Basse-Terre, corresponds very closely in general charac- 



