THAXTP;it. — MONOGRAPH OF THE LAB0ULBK\IA(1 1\ &)/) 
Museum 
bonar 
nt 
\o. 
900: on G. unicolor Amazon, British Museum No. 510, and No. 517 (Brazil). I'snally on the prnthorax, 
inferior or superior, and head. 
This species has been separated from L. punctata to which it is very closely allied, and for which it 
might readily be mistaken, chiefly for the reason that its appendages and inthcridia aj)|Kar to be con- 
stantly different. The antheridia and their stalk cells are relatively short, the former strongly curved, 
pun 
nirlirs of the uillrr 
appendage, which in L. punctata scarcely exceed the tips of the antheridia and are not distinguished l> 
basal and terminal portion, are distinctly thus distinguished in the present sjm .'us, in which the tin ■ lower 
septa, only, are suffused; while this is the ease with all the septa in L. pundt /. The suffusion of tin 
basal cells of the appendages which are indistinguishable from the insertion-cell, the external prominence 
formed by the basal cell of the outer appendage, and by cell HI, give the individuals I peculiar habit 
unlike that of L. 'punctata. The material of the two species, S3 well as the sources from which it has be u 
derived, are sufficiently varied to determine the constancy of the differences indicated. In a few individual 
cell II of the receptacle is not opaque at maturity, but merely suffused and coarsely punctate. In some 
individuals the punctation of the perithecium may be almost obsolete, and is very rarely as general as in 
L. punctata. • 
Laboulbenia punctata Thaxter. Plate LXIV, fig. 7. 
Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 107. I >ec., 1896. 
Perithecium free, straight, translucent brown, sometimes becoming almost opaque, except the broad 
short neck formed by the basal wall-cells, which is nearly hyaline and as broad M uV asdgeroUS portion; 
the lower half or more of the suffused body of the perithecium covered with irregular more or V I rounded 
dark spots, irregularly distributed, the lower larger; the tip rather abruptly distinguished, narrow, Mack, 
distally translucent. " Receptacle rather short and stout, the basal cell rather narrow and hyaline or 
yellowish, contrasting; the rest of the receptacle subtriangular and more or less deeply suffused; cell \ I 
paler, cells III and IV side by side, nearly vertical, deeply suffused, except the upper edge; cell V relatively 
large, subhemispherical, becoming opaque; all the suffused cells where not opaqu. . more or less con- 
spicuously and rather coarsely punctate. Insertion-cell very broad, black, dose beside the base of the 
perithecial stalk. Outer appendage consisting of a large triangular bfl d cell externally blackish brown 
forming the base of a series of (eight or less) much smaller cells obliquely superposed, which curve toward 
the perithecium; each cell producing externally a single simple erect branch, rather ctosel; ep.a.e tl. 
A«m„llv ,V^ <w„ A*Jr nnnstrW-tod the terminal cell short with rounded apex. The inner appendag. 
appen 
three 
350 
flask-shaped brown antheridium. Perithecia 200-220 X 
about 35 ft). Total length to tip of perithecium, average 
75 u. Appendages 110-130 u. . „ . , . ,, u - 
On oL-,7« s,,., Paris Museum, No. 74, Venezuela, No, 130, "South Amen,-., ( > ad of 0. H'- 
cfeomuReid. (= 0. Morilzi Mann.), Columbia, Berlin Museum No. (108. 
The perithelium of this species possesses the same peculiar dirty yellow,*!, color,,*, _....-„ « «™,1 
by brown suffusions, which dlrueterizes ,l,n, of L. «ip **, as -II as .1,- pe.ii ,«r .m-p 1 r "a 
punctation which is much less well marked in the last mentioned spec.es. The und, len,,t ,,,,1 I, , - 
of the appendages, the cells of which are all distinguished by dark sepU; he long sta lk-cc fc • 1 , ■ 
theridia he ti.Ts of which nearly reach the tips of the sterile branches; the for,,, an ™ - 
basal cells of tie appendages, as well as of the receptacle, and to a less extent the broader .talk of 
perithecium, are characters which .serve to separate the present spec.es from ,!s MM ally. 
