A. L. SMITH : LICHENS. sl 
-2 mm. alt. dense imbricatæ, crenatæ, vel in lacinias angustas sspe minute 
pinnatas divisæ, * Thallus ca. 175 a cr. ; cortex superior ca. 35 wer. e cellulis 
decompositis constans, lumen cellularum 7 a diam. velca.12 4x7 a; gonidia 
nostocacea 5 p diam. stratum densum 50 y lat. sub cortice formantia ; hyphie 
medullares, intricate 5 cr. stratum ca. 100 w er. formantes. <A pothecia 
plano-convexa, rufo-brunnea, margine pallidiore eincta, sparsa vel in glomer- 
ulos parvos aggregata, irregulariter orbiculares, 0-3-1 mm. diam. ; hypo- 
thecium flavo-brunneum ; paraphyses ca. 2°5 a cr. septatæ, arcte coherentes ; 
asci clavati, ca. 45 wx 8 u; spore ellipsoideo-fusiformæ, hyaline, 7-8 u x 3-4u. 
Ad lignum. Riv. Ngoyé. Spermolepis forest on serpentine soil by river, 
350 ft. May. 1095. 
The squamules are somewhat similar to those of P. triptophylla in colour, 
but rather lighter, much larger, and more densely imbricate. 
PARMELIELLA sp. Thallus of spreading reddish-brown laciniæ, irregularly 
crenate in outline, branched or simple, blunt at the tips, about 2-4 mm. wide, 
up to 12 mm. long, beneath densely pannose with dark hyphæ solitary or in 
strands, about 3 mm. long. Thallus about 140 u thick, the upper cortex a 
layer of two cells with extremely gelatinous walls and restricted lumen ; the 
gonidial zone narrow, of conglomerate blue-green algæ ; the lower cortex 
of decomposed cells. Sterile. On bark. Mont Mou. Brown above, black 
filaments round edges and beneath. March. 713. 
PANNARIA MARIANA Müll.-Arg. Lich. Beitr. n. 1159 in Flora, lxx. 321, 
1887. 
On trees. Ignambi, In forest, 2000-4000 ft. Aug. 1736. E. Indies, 
N. Caledonia, N. and S. America. 
Var. ISIDIOIDEA Müll.-Arg. l. c. 
Ermitage stream. “ Encrusting stones by stream. Grey, fringed with 
black hairs.’ Jan. 230. Ignambi. In forest, 2000-1000 ft. Aug. 1736. 
E. Indies, New Caledonia, N. and S. America. 
P. NIGROCINCTA (Mont.) Nyl. Syn. ii. 39, 1585. 
On branches. Nouméa. Oceania, W. Africa, S. America. 
PsoroMA SPHINCTRINUM (Mont.)N yl. Syn. ii. 24, 1885. On wood. Ignambi. 
In forest, 2000-4000 ft. Aug. 1733, 1734. Africa, Oceania, S. America. 
Ps. ARANEOSA (Bab.) Nyl. Syn. ii. 23, 1885. On soil. Mont. Humboldt. 
In moist gully forest, 1000 ft. May. 1086. Oceania (New Zealand). 
Psoroma sp. Thallus reddish-brown of small, mostly ascending, variously 
crenate-lacinulate squamules. Abortive apothecia alone present. On tree- 
trunks. Riv. Ngoyé. Spermolepis forest on serpentine soil by river, 350 ft. 
May. 1096. 
LINN. JOURN.—BOTANY, VOL. XLVI, G 
