324 RIDDLE: NOTEWORTHY LICHENS FROM JAMAICA 
distinctive characters, and Mueller-Argau’s description applies 
so well to Dr. Cushman’s specimens, that there can be no doubt 
as to the identity of the two. G. platygrapta belongs to the 
section Platygraphopsis (see PLATE 21, FIGS. 2,6). The original 
description gave the spore-measurements as 150 X 30u. I find 
that they vary from 150-180 X 30-504. An examination of 
Wright’s Graphideae Cubanae No. 4, labelled with a manuscript 
name of Nylander’s in the Tuckerman Herbarium, proves that 
it is the same as Dr. Cushman’s Jamaica specimens. This species 
is, therefore, now known from Cuba, Jamaica, and Porto Rico. 
6. PHAEOGRAPHINA QUASSIAECOLA (Fée) Muell. Arg. Mem. Soc. 
Phys. Hist. Nat. Genéve 298: 47. 1887. 
Thecaria quassiaecola Fée, Essai Crypt. 97, pl. 1, f. 16. 1824. 
This is a striking and peculiar species in which the prominent 
apothecia vary from elongated-lirelliform to oblong and even 
entirely circular. Occasional specimens occur with all the apo- 
thecia circular, and such specimens would easily be mistaken for a 
Gyrostomum. Mueller-Argau says (op. cit. 48) that Fée’s citation 
of the type-locality as ‘‘America”’ must have been a mistake as the 
original specimen in Fée’s herbarium came from Madagascar. 
And hitherto the species has been recorded from the Old World 
only: from tropical Africa, Ceylon, New Caledonia, and Australia. 
But it appears to be sufficiently common in Jamaica, as I have in 
my herbarium the following specimens from that island :—Mande- 
ville, March, 1912, J. A. Cushman 52; also January, 1909, A. E. 
Wight 66; near Troy, September, 1906, Elizabeth G. Britton & 
Delia W. Marble 265; also June, 1909, A. E. Wight r40a, 202, 208. 
Furthermore, the specimen of Wright’s Graphideae Cubanae No. 
7, in the Tuckerman Herbarium, proves to be this species, having 
been incorrectly determined as “Graphis scalpturata var. plurifera 
Nyl.” which is a synonym of Phaeographina caesiopruinosa (Fée) 
Muell. Arg. Both Ph. scalpturata and Ph. caesiopruinosa belong to 
the Section Eleutheroloma, in which the amphithecium is black at 
the sides only and colorless beneath; while P. quassiaecola belongs 
to the Section Pachyloma, in which the amphithecium is completely 
black and very thick at the base. With the correct identification 
of this Cuban specimen, we have three stations for the species in 
the West Indies. 
