NEW LABOULBENIALES. 721 



tally, short and broad; bearing distally in a radial series four to seven, 

 or even eight, closely set, erect branches with blackened basal septa; 

 their comparatively short basal cells bearing distally elongate branch- 

 lets, usually radially associated in pairs, one member of which may 

 occasionally be replaced by an antheridium; the branchlets long, 

 hyaline to brownish, with here and there a secondary branchlet, 

 somewhat uniform, diverging in a more or less compact fascicle, often 

 irregularly nodular distally, or swollen at the remote septa; some of 

 them ending in characteristic, rather close spirals. Perithecium 

 nearly straight, concolorous with the small basal and stalk-cell region, 

 from which it is distinguished below by a slight elevation, only, which 

 marks the base of the lower tier of wall-cells; which also form a rather 

 prominent ridge distally, the body of the perithecium in this region 

 being slightly inflated, tapering continuously from this elevation to 

 the narrow apex; the wall-cells describing more than a quarter of a 

 turn: the right and posterior lip-cells misplaced, and combined to 

 form a narrow, dark, blunt, hyaline, pointed prolongation, which is 

 terminal and external; the two remaining lip-cells forming, below it, 

 a hyaline, slightly prominent area. Spores 50 X 3.5 n. Perithecium, 

 including basal cell region (7-10 ^i), 100-130 X 24-30 /i. Receptacle 

 to insertion-cell 250-270 m; basal and subbasal cells 218-245 X 14- 

 18 n, the bulbous enlargement X 35 ^t or less. Longest appendages 



210 m. 



On various parts of Hippelates sp.. No. 281 IB, St. George, Grenada, 

 B. W. I. 



This species has been obtained in abundance on material collected 

 for me by Mr. Phillip, to whom I am also indebted for other interesting 

 hosts. It is of special interest, since it has the typical receptacle of 

 ' Ceraiomyces,' cells III-V being replaced by a single cell, while its 

 insertion-cell and appendages are of the normal Laboulbenia-type. 

 The form of pointed perithecium is peculiar and distinctive, while 

 the spiral terminations of many of the branches of the appendage 

 resemble those of many trichogynes, and are quite imlike the more or 

 less indefinite spirals seen in L. spiralis. 



