Vol. 44 No. 7. 
BULLETIN 
TORREY BOTANICAL CLUB 
JULY; 4917 
Some noteworthy lichens from Jamaica 
LINCOLN W. RIDDLE 
(WITH PLATE 21) 
In the spring of 1912, Dr. Joseph A. Cushman, Assistant 
Curator of the Boston Society of Natural History, collected in 
the Island of Jamaica, in the West Indies, a set of lichens repre- 
senting 109 species and varieties. A study of these has resulted 
in the discovery of two new species and of a number of other 
species of sufficient interest to be worthy of record. To the dis- 
cussion of these species has been added a revision of the American 
species of Megalospora, four of which occur in Jamaica. A com- 
plete set of the lichens collected by Dr. Cushman has been de- 
posited in the herbarium of the Boston Society of Natural History. 
NEW SPECIES 
I. Buellia rinodinospora Riddle, sp. nov. 
Thallus epiphloeodes crustaceus uniformis effusus haud 
limitatus, albidus vel cinerascenti-albidus subnitidus, crassitudine 
mediocris, inaequalis partim rimulosus partim rimoso-areolatus 
et demum diffractus; KOH flavescens; hypothallo nullo. Apo- 
-thecia mediocria, 0.5-1.0 mm. lata, subelevata, nitida, primum 
concava demum plana vel satis convexa, rotunda re egularia; disco 
scabro, nudo, castaneo vel fusco-nigricante nunquam atro; margine 
proprio nigro, persistente, primum crasso integro demum tenue 
crenulato; epithecio fulvo; hymenio decolore, circ. 180 4 altit.; 
excipulo et hypothecio fusco-nigricante. Asci 8-spori Sporae 
fuscae oblongae sat curvatae, biloculares placodiomorphae, 
[The BULLETIN for June (44: 267-320, pl. 17-20) was issued June 13, 1917-] 
