30 
GYALECcTA radiatilis (sp. nova) thallo tenui contuguo 
mequabilt glaucescente, hypothallo albo; apothectis 

minutissinus emergentibus thallo adscendente margina- 
tis, excipulo connivente urceolato radiato-striato nigro. 
Spore inthecis subcylindraceis octone, ex ellipsoideo 
oblongo-ellipsoidece, simplices, diam. 24—3% plo lon- 
giores, incolores. On bark, South Kingstown, Rhode 
Island; Mr. J. L. Bennett.. The very minute apothe- 
cia are distinguishable, by the contrast of colours, by 
the naked eye, but require a powerful lens for their 
(external) examination. They are much more eyvi- 
dently gyalectine than G. epulotica, Ach., a lichen 
which Iam now inclined to consider as. best placed 
by Koerber, together with G, odora, Scher., under 
Lecanora sect. Aspicilia, and are comparable rather e 
with the Cuban lichen (Wright Lich. 1. c. 5, p. 414.) 
described by me as Gyale ta asteria (Obs. Lich. 1. ¢., 
d, p. 414.) From this the present differs in its black 
exciple with a constantly pore-like aperture, and 
especially in the interesting point that the spores are 
always simple; thus completing the sporal history of 
the genus. It now appears impossible to doubt that G. 
asteria isidentical with Parmelia (Urceolaria) Valen- 
zuehana, Mont. Pl. Cell. Cub. p. 205; and the Cuban 
species must therefore take the name of G. Valenzuex 
liana. Ramonia, Stizenb., founded upon this lichen 
(Beitr. z. Flechtensyst. p. 168) was probably a syste- 
matic consequence, due to Montagne’s reference of his 
plant to Urceolaria. But itis even more difficult to 
follow Nylander (Obs. in Bot. Zeit.) in subsuming such 
structure as this under Lecanora.—One word here of 
respectful homage to the memory of that genial eryp- 
togamist who first illustrated the plant we have been 
considering. If a reverent handling of nature, and 
