394 



THAXTER. MONOGRAPH OF THE LABOULBEXIACE.E. 



its antheridial branches, and its antheridia, which are relatively large, and usually exceed the sterile 

 branches in length, a condition seen in no other species. The cells of the inner primary appendages 

 may all bear such antheridial branches, but in a few instances the uppermost is replaced, as in fig. 11, 

 by a sterile branch similar to those of the outer appendage. The perithecium is often more deeply suffused 

 than is represented in the figures and the wall-cells seem, in old individuals, to be spirally twisted. 



Laboulbenia Galerit.e Thaxter. 

 This fine species which is distinguished by its contrasting black and white color, black punctate 

 perithecium, and normal receptacle in which cells III and IV are separated by a horizontal septum, is the 

 common species on Galerita in temperate and tropical North America; but does not appear to extend 

 south beyond the Isthmus, though specimens have been examined from Nicaragua and the West Indies. 

 The antheridia appear to occur always in terminal groups of two or three. Additional material has been 

 examined from the following sources. On Galerita sp., Iowa: on 67. Janus Fabr., Illinois: on G. Cali- 

 fornica Lee, California; U. S. Nat Mus., No. 47, Galerita sp., Florida. Hope Collection No. 253 on G. 

 atripes Lee, Texas. Berlin Mus., No. 970 on G. tenebriosa Klg., Port au Prince, Haiti: No. 9G7 on 

 Galerita sp., Nicaragua: Sharp Collection, No. 1192 on G. Forrcri Bates, Presidio, Mexico. British Mu- 

 seum; No. 712 on G. Mexicana, Chaud., Oaxaca, Mexico, No. 711. 



Laboulbenia subpunctata, nov. sp. Plate LXIV, figs. 5-G. 



Perithecium relatively large, longer than, sometimes nearly twice as long as, the receptacle ; usually 

 straight, sometimes curved, cylindrical or slightly inflated, dirty yellow, becoming tinged more or less 

 deeply with rather rich brown; the lower fifth or half, rarely more, flecked by scattered dark rounded 

 spots, which are larger and more irregular in shape toward the base; the tip rather abruptly distinguished, 

 mostly abruptly darker; the apex hyaline yellowish, the pore terminal, or slightly sublateral: a well 

 distinguished hyaline stalk slightly narrower than the base of the perithecium, as a rule, its length not 

 equalling its breadth. Receptacle normally relatively short and compact, the basal cell quite hyaline 

 and contrasting abruptly with the deeply suffused subbasal cell from which it is obliquely separated, and 

 below which it bulges more or less prominently on the posterior side: cells II and III becoming quite 

 opaque, the former often projecting more or less conspicuously below the latter, which extends up to the 

 lower outer angle of the insertion-cell, below which it forms a usually well defined rounded projection : 

 cells IV and V becoming deeply suffused, but seldom opaque, their long axes parallel with that of cell 

 III: cells II-V nearly hyaline immediately below the contrasting black insertion-cell: cell VI relatively 

 long, somewhat less deeply suffused especially at its base, the cells above it somewhat prominent, con- 

 colorous, often flecked with darker irregular patches. Insertion-cell broad, black, the opacity involving 

 the basal cells of the outer and inner appendages more or less completely; the former extending as a black 

 rounded prominence external to the base of the branch (usually broken off) which it bears. The outer 

 appendage consisting of about six very obliquely superposed cells, forming a compact series running- 

 inward toward the base of the perithecium, each bearing a single simple branch, the branches having a 

 basal two-celled part, with constrictions at the blackened septa, clearly distinguished from a more elongate 

 tapering distal hyaline portion, which extends not much above the upper third of the perithecium proper: 

 inner appendage consisting of a basal cell, giving rise on either side to a series of cells so obliquely super- 

 posed that the long axis of the inner is nearly vertical ; the three or four lower (outer) ones giving rise to 

 antheridial branches, consisting of a basal cell about twice as long as broad, distinguished by a blackish 

 basal septum, and bearing a relatively short strongly curved antheridium, exceeding it in length. Average 

 length to tip of perithecium 400-450 p (300-550 p) : to insertion-cell, average, 170 p, greatest width about 

 70 p. Length of perithecium, including stalk, 180 X 45-270 X 50 p, average 200 X 40 p. Appendages, 

 total length including insertion-cell, 125-150 p, the sterile branches longest 120 p. Spores 44 X 5 p. 



On Galerita sp., Rosario, Argentina. Paris Museum No. 160. On Galerita sp., Sierra Geral, 



