HYPOCRELLA AND ASCIIERSONIA. 169 



placed at my disposal an extensive collection of West Indian 

 species, which has furnished several stages hitherto 

 unrecorded. 



ASCHERSONIA. 



The genus Aschersonia was established by Montagne in 1848 

 (Ann. Sci. Nat., Ser. 3, Bot., X,, p. 122) for the reception of 

 two phyllogenous fungi from the tropics. His generic 

 description is as follows : — 



" Stroma carnosum, e cellulis tubuhs flexuosis intricatis 

 contextum, leete coloratum, primitus velo fugaci byssino 

 concolori tectum. Perithecia raembranacea, tenuissinia, 

 erecta, fibroso-cellulosa, in basidia abeuntia porisque late 

 apertis (tandem rimose confluentibus) pertusa. Basidia 

 fihformia sporas sufiulcientia fusiformes hyalinas tnseptatas 

 seu sporulas quaternas foventes. — Fungi phyllogeni, tropici, 

 Hypocreis affines." 



He added that the genus represented, in the Hypocreacess, 

 the tribe which in the Sphseriacese is distinguished by the 

 absence of asci, that is, in which the spores are borne on basidia, 

 and stated that it was near the Phyllostigma of Peisoon, which 

 approached it in structure. It differed from the latter in its 

 elongated, fusoid, quadrilocular spores. 



The two species were Aschersonia taitensis and Aschersonia 

 guianensis, of which the following are the descriptions : — 



" Aschersonia taitensis Montag. MSS. ; stromate hemis- 

 phserico, truncato, obtuso, luteo, peritheciis subquindenis 

 erectis minutis, poris per rimulas extus conjunctis. Hab. in 

 pagina superiori foHorum Cyrtandrsa cujusdam taitensis lecta. 

 Coll. Mus. Par. Parasit. No. 25. 



" Descr. Sparsa, epiphylla. Stroma hemisphaericum, basi 

 byssino membranacea expansum, hiteum, setate provectiori 

 vaccinum, intus concolor, 1 ad 2 mm. diametro metiens, 

 semillimimetrum altum. Perithecia stromati prorsus 

 immersa, ovoidea, in collum brevissimum attenuata, erecta, 

 ^ miUim. longa, apice poro sensim ampliante pertusa. Basidia 

 filiformia, tenuissima, 20 ad 25 millimilHni. longa, primitus 

 sporas sustinentia. Sporse tandem innumerse, mucilaginis ope 



