322 RIDDLE: NOTEWORTHY LICHENS FROM JAMAICA 
loculis poro confluentibus, 36-50 X 15-204. [PLATE 21, FIGS. I, 
On bark, Newcastle, Jamaica, March 1912, J. A. Cushman 
755: 
This species is distinct from all other Buellias in the large size 
and polar-bilocular character of the spores. Wainio (Act. Soc. 
Sci. Fenn. 7: 172. 1890) describes a Buellia placodiomorpha 
with a similar type of spore but with four cells and reaching a size 
of only 19 X 104. From species of Rinodina, this new species 
can be distinguished by the apothecia being of the lecideine type 
rather than the lecanorine. 
2. Chiodecton (Sect. ENTEROGRAPHA) leiostictum Riddle, sp. nov. 
Thallus crustaceus crebre contextus uniformis effusus, linea 
nigra limitatus, albidus vel demum sat sordide ochroleucus opacus, 
crassus (0.15-0.2 mm. crassit.) rimuloso-areolatus; KOH intense 
flavescens dein rubescens; hypothallo nullo. Apothecia numerosis- 
sima, thallo immersa, punctiformes rotundata vel subdifformia 
haud elongata, minuta, 0.12-0.16 mm. lata, seriata uniserialia 
vel interdum serie ramosa disposita serialibus rectis vel flexuosis, 
aut rarius partim irregulariter aggregata: disco atro parum prui- 
noso dein nudo, plano, superficiem thallo aequante; margine dis- 
tincto nullo; epithecio fuligineo-nigro; amphithecio supra fuligineo- . 
nigro infra decolore; hypothecio decolore; hymenio decolore, 100- 
120 altit. Asci 8-spori. Sporae decolores anguste oblongae, 
5-8 loculares loculis cylindricis vel satis rotundatis, 20-30 X 4-6 Hn, 
halonae 4-5 » crasso indutae. [PLATE 21, FIGS, 3, 5.] 
On old decorticated wood, Montego Bay, Jamaica, March 1912, 
J. A. Cushman 15. 
In 1886 (Flora 69: 104), Nylander published a list of the 
Graphidaceae collected by Charles Wright in Cuba. The list 
included many new species which were given merely as nomina 
nuda. For most of these no descriptions were ever published. 
The species just described was named by Nylander (l.c.) Stig- 
matidium leiostictum. Through the courtesy of Professor Farlow, — 
I have been able to make a microscopic examination of original 
material of Wright’s Graphideae Cubanae No. 157, cited by 
Nylander, and it has proved to be identical with the specimens 
collected by Dr. Cushman in Jamaica. Species of Chiodecton 
Sect. Enterographa with spores more than four-celled are com- 
