342 



MONOGRAPn OF THE LABOULBENIACEJ3. 



Laboulbema Aspidogloss^; Thaxter. Plate III, figs. 8, 9. 



Proc. Am. Acad. Arts and Sci. Vol. XXX, p. 473. 



Peritheciura black, almost opaque, rather narrow, the inner margin curved abruptly outward 

 to the rather large apex, the lips very oblique outward. Appendages arising from two basal cells 

 which are nearly equal in size : the outer inflated and separated from the cell above it by a 

 blackened septum, this sub-basal cell roundish, inflated, about as large as the basal cell and giv- 

 ing rise to two branches, an outer and an inner ; the outer separated from it by a blackened 

 septum and consisting of a basal cell with three terminal branchlets, the inner of which is 

 deeply and broadly blackened at its base, while the other two are wholly hyaline and fertile ; the 

 inner branch from the sub-basal cell has no blackened basal septum and produces several short 

 branchlets bearing numerous antheridia. The inner appendage, like the outer, consists of a 

 roundish or squarish basal cell separated from a sub-basal cell by a blackened septum ; the 

 sub-basal cell producing a tuft of short branches bearing at their tips two to four antheridia 

 or becoming more elongate and sterile. Receptacle normal, the two basal cells rather slender, 

 elongate, colorless ; the distal cells suffused with blackish brown. Perithecia, 110-120 X 40 fi. 

 Appendages (longest), 240 p. Total length to tip of perithecium, 333 \i ; greatest width, 63 p. 



On Aspidoglossa subangulata Chaud., Kansas (M. A. Barber). 



A species clearly marked by the peculiarities of its appendages, which, unlike almost all 

 other species of the genus, are fertile without regard to their external or internal origin. In 

 this respect they resemble L. Clivince, which is found on a closely related host. Otherwise its 

 relationship to other described species is not evident. It occurs rarely on the host mentioned, 

 usually not more than two or three on a given specimen. 



Laboulbenia Olivine Thaxter. Plate XXI, figs. 16-18. 



Proc. Am. Acad. Arts and Sci. Vol. XXVIII, p. 169. 



Color pale straw-yellow to reddish. Perithecium short, stout, united to the receptacle for 

 three quarters or more of its length ; its free portion abruptly tapering to the rather small 

 tip ; the lip-cells turned slightly outward, with a blackish suffusion below 6n the inner side. 

 Appendages united to form a single brush-like organ without any blackened insertion-cell, and 

 consisting of a basal cell which may be single or longitudinally several times divided, followed 

 by a second series of two or more elongate cells placed side by side and bearing distally a series 

 of branches, which, by branching several times successively, form a dense tuft ; the ultimate 

 branchlets slender and curved, sterile or fertile. Receptacle moderate, normal, except that 

 cells IV and V become irregularly divided into often numerous (four to eight) cells which vary 

 in form, size, number, and position in different specimens. Spores, 75 x 5 fi. Perithecia, 145- 

 150 x 55-60 /x. Appendage, 110-200 fi. Total length to tip of perithecium (longer), 400 ft. 



On Clivina dentifemorata Putz., Mexico, and C. dentines Dej., Kansas (Barber). 



This species is chiefly remarkable for the union of its appendages at their base into a 

 single body and the abnormal septation of cells IV and V. The appendage is subject to great 

 variation, and in some specimens produces great numbers of antheridia without regard to the 



