396 Petch . — The Genus Endocalyx , Berkeley and Broome. 
Endocalyx Thwaitesii, B. & Br. 
This species was described twice, (i) as E. Thwaitesii , ‘ Ore insigniter 
laciniato, laciniis elongatis ; stipite gracili, elongato. On dead sticks. 
Spores varying from globose to oval, 15-20 jjl,’ and (2) as E. psilostoma, 
B. & Br., c Ore primum integro, dein fisso ; stipite brevi crassiore. With 
the last. Spores 20-25 ju.’ Berkeley and Broome give a somewhat imaginary 
figure of the first species (Fig. 18), showing a sessile basal cup, five times 
the diameter of the stalk, with an incurved upper edge and apparently 
floccose : from the centre of this cup springs the cylindrical stalk which ex- 
pands like a calyx at the top : the upper edge of one specimen is divided 
into about nine fairly long triangular teeth : the other is more divided and 
the teeth split up into long thin fascicles of hyphae. The stalk and ‘ calyx ’ 
are rough with minute recurved scales. 
The herbarium specimens are both on Oncosperma. They were appar- 
ently gathered by Thwaites at the same time, and form one of his numbers 
(1048). Berkeley and Broome give ‘ e basi crassa oriundum’ as one of the 
generic characters, but E . psilostoma has no such base, and it is not a normal 
part of the fungus. It is this thick base which the artist has represented as 
a cup : it forms a solid annulus round the stalk of E. Thwaitesii , and con- 
sists of a few hyphae and fallen spores mixed with the coarse brown 
epidermal hairs of the outer surface of Oncosperma. It is not formed in the 
same way as the basal ring of E. melanoxanthus. 
The structure of the fungus is best determined from the less damaged 
specimens which constitute E. psilostoma. These have a stilbum-like stalk 
about -i mm. diameter, blackish at the base, and becoming yellow upwards. 
They expand slightly at the top, forming a small funnel, but the recurved, 
yellow, spreading lobes, such as are present in E. cinctus , have been broken 
off, and only the base of the funnel is left. Specimens in this condition no 
doubt authorized Berkeley and Broome’s statement, ‘ Ore primum integro.’ 
The size and colour of the hyphae, the internal structure, and the arrange- 
ment of the spores are identical with those of E. cinctus , but the spores 
(Fig. 19) are more strongly warted or spinulose, regularly oval or circular, 
less compressed than in E. cinctus or melanoxanthus , blackish brown, 
17-21 x 16-19 ^ only differs from E. cinctus in the larger warted spores, 
and in the absence of a black basal cylinder enclosing the stalk. Its total 
height is about 1-25 mm. Under a high magnification the warted edge of 
the spore appears yellow. 
The specimens of E. Thwaitesii are weathered and brown, and in 
nearly half of them only the stalk is left. The base of the stalk is sur- 
rounded by the upturned cuticle of the substratum, or by the annulus which 
Berkeley and Broome describe as a solid base. Where this annulus is 
present, the stalk passes through it loosely and is not united to it in any 
