THAXTER. MONOGRAPH OF THE LABOULBKXI ACE/K. \]()\ 
Laboulbenia producta Thaxter. Plate LXIV, figs, 13 11. 
Proc. Am. Acad. Arts and Sci., Vol. XXXVIII, p. 52. June, 1902. 
Perithecium faintly tinged with pale dirty brown, rather long and slender, nearly erect, free except 
the rather narrow subhyaline base; the lips somewhat prominent, outwardly oblique, the inner subtended 
by a dark suffusion. Receptacle tapering to a slender pointed base, the basal cell hyaline, becoming 
faintly tinged with dirty brownish, contrasting with the opaque subbasal cell which is less than twiee as 
long; cells III and VI subequal, nearly opaque, reddish brown; cell IV nearly opaque, continued upward 
to form a free blunt well-defined prominence which projects beside and slightly beyond the ba>al cell 
of the appendage; cell V relatively very large, extending to the base of cell IV, wholly pale dirty brown 
like the perithecium, contrasting. Insertion-cell relatively large, slightly oblique inward, resting helow 
on cell V and laterally and obliquely on cell IV. Basal cells of the appendages nearly equal, subtsodia- 
metric, the outer bearing an outer and an inner simple hyaline branch distally, the basal cells of which, 
especially the inner one, are more or less inflated, roundish, with dark septa, and tinged with dirty brown; 
the basal cell of the inner appendage bearing a branch on either side similar to those of the outer, the 
branches hardly extending to the tip of the perithecium. Spores 55 X 4 /*. Perithecium (10 100 X 25 " 
Receptacle 110 [x to insertion-cell, the projection above 10-12 it. Total length to tip of perithecium 220 p. 
conn 
Museum 
This species is widely different from any other known species and is at once distinguished by the lin- 
ger like protrusion of cell IV. The only other species that shews a similar tendency is L Anaplogenii lo 
which, however, it is not at all related. The type of the appendages, the short inflated basal cells of the 
branches, and their dark septa and mode of origin, suggest a remote connection with Conns like L. celet- 
tialut, but it seems on the whole distinctly isolated. Fig. 13 represents a well developed individual 
obtained on an undetermined host, without locality, in the collection of the Museo Xaeional at Buenos 
Aires. 
Laboulbenia celestialis Thaxter. Plate LXV, figs. 13-14. 
XXXV, p. 163. Dec, 1899. 
Perithecia almost 
hyaline basal wall-cells 
wholly free, rather deeply suffused with dark reddish brown except the almost 
^ ; tapering slightly to the well distinguished rather large tip, which is turned slightly 
outward, the lip-cells blackened except around the pore. Receptacle finely punctate, pale dirty brown, 
darker along the posterior margin, the lower half of cell I hyaline, rather short and stout, somewhat abn.plly 
expanded below the perithecium; cell I V bulging abruptly below the black insertion-cell. ( hiter append- 
age consisting of a somewhat rounded basal cell, brown externally, and bearing usually two branch. 
placed antero-posteriorly, the basal cell of the outer nearly round, deep brown externally and beating 
two branches placed antero-posteriorly which are very long and slender, remotely i ptate and more or 
less suffused with dirty brown: the inner appendage consisting of a smaller basal cell producing a branch 
on either side, the basal cells of which are short with black septa and bear solitary anthendia or short 
sterile branches which are blunt and shorter than the perithecium. Pentheaa 110 X 36 ft. lotaJ 
length 
400 a. 
00 n. Appeti 
507, China. On Diekranonau cetotinm , 
Japan; on Dn/pta mfieoBu Dej., British 
Museum No. 500, Natal, Africa. 
The specimens on Dichranoncus referred to this species, differ somewhat m their more sfender form, 
, and deeply suffused perithecia; the receptacle is USUaHy enlarged between cells I and 
«,« „ lulier branches from the basal cell of the outer appendage are often paired. In the Na al spwmen 
this inner branch is not distinguished by the usual black septum. It is possible that we are hen- dealing 
darker color 
and the inner 
