Seaver: North American Hypocreales 



97 



almost superficial. The capitate ascus is a very conspicuous char- 

 acter in this species and the segmentation of the spores is much 

 more conspicuous than in the previous species. 



Another species with its perfect stage was collected by J. R 

 Johnston and J. A. Stevenson at Naguabo, Porto Rico, March 9, 

 1914, No. 1640. This species is said by the collectors to occur 

 on white fly and was collected on the leaves of Bignonia unguis 

 L. In this species, which will be here designated as Hypocrella 

 disjuncta sp. nov., the stromata are tuberculate and slightly con- 

 stricted at the base. They are perched on the rather large ellip- 

 soid scale so that the insect itself is distinctly visible, serving as a 

 substratum for the stroma. The stroma becomes dull-grayish 

 when mature. The capitate apex of the ascus is small since the 

 ascus itself is constricted at the apex and strongly swollen near 

 the center. While the spores are evidently filiform when young, 

 they very soon break up into their component parts, which become 

 so disjuncted and disheveled that the older ascus appears to be 

 polysporous with little hint of their real filiform character. This 

 is very different from Hypocrella cretacea in which the filiform 

 spores may be easily seen protruding from the broken ascus. 



Still another Porto Rican species was collected by H. H. 

 Whetzel and E. W. Olive at Maricao on the leaves of Inga laurina 

 Willd., No. 734. This was labeled Aschersonia sp. Later, on a 

 more careful examination, some of the stromata were found 

 to contain asci and the species was referred to Hypocrella guar- 

 anitica Speg., since it seems to agree well with that species as 

 distributed by Balansa in Plantes du Paraguay, No. 3146. The 

 stromata in this species are tubercular, rather conspicuous and 

 become black at maturity. The species grows on a circular scale 

 which is almost completely obscured at maturity. 



Hypocrella Tamoneae Earle, which was published by the writer 

 in the " Hypocreales of North America," was again collected by 

 H. H. Whetzel and E. W. Olive at Maricao, No. 472. This was 

 said by the collectors to occur on scale insects ( ?) . While this 

 species has all of the characters of a Hypocrella its entomogenous 

 character is much less evident than in the other species studied, 

 although as noted above its entomogenous character was sus- 



