102 
The Philippine Journal of Science 
1913 
7. L. ATRA (Huds.) Ach. 
Luzon, Subprov. Benguet, Merrill 7993 p. p. Ad corticem arboris fron- 
dosae. 
4. PLACOPSIS Nylander 
h. P. ISIDIOPHORA Wain. sp. nov. 
Thallus crustaceus, arete adnatus, totus laciniatus lobatusque, 
laciniis circ. 1.2-0.5 mm latis, sat tenuibus, irregulariter ra- 
diantibus, contiguis, partim confluentibus, centre saepe demum 
areolato-diffractis, esorediatus, centrum versus crebre isidiosus, 
isidiis circ. 0.5 mm longis aut brevioribus, 0.1 mm crassis, cylin- 
dricis, sordide albicans, sat opacus, sat laevigatus, neque KHO 
nec CaClaOj reagens, at his reagentiis unitis leviter rubescens, 
subtus pallidus, cephalodiis prominentibus, convexis, 0.5-3 mm 
latis, integris aut demum vulgo radiatim laciniatis lobatisve, 
carneo-pallidis aut rarius cinereo-pallidis, gonidia nostocacea 
continentibus. Apothecia adpressa, basi constricta, mediocria, 
circ. 2-1 mm lata, zeorina, margine duplice, margine thallode 
tenui, integro aut crenulato, thallo concolore, margine proprio 
integro aut crenulato, sat tenui aut interdum inconspicuo disco 
concolore, prominulo aut discum baud superante, disco piano 
aut leviter concave, pallido aut carneo-pallido aut rare cinereo- 
pallido, tenuiter pruinoso, opaco. Hypothecium cartilagineum, 
carneum aut carneo-pallidum, KHO non reagens. Hymenium 
circ. 0.16-0.17 mm crassum. Epithecium sordide carneo-palli- 
dum. Paraphyses tenues, crass. 0.001 mm, laxe cohaerentes, 
apice arctius cohaerentes crassioresque, ibi etiam ramosae. 
Asci cylindrici. Sporae 8-nae, monostichae, simplices, decolores, 
ellipsoideae, apicibus rotundatis, long. 0.010-0.019, crass. 0.009- 
0.010 mm. Gonidia globosa, diam. 0.005-0.007 mm, dilute flavo- 
virescentia, membrana tenui, distincta. 
Negros, Canlaon Volcano, alt. 1,800 m, Merrill 6876. Ad lignum vetus- 
tum. 
2. P. PAPILLOSA Wain. sp. nov. 
Thallus crustaceus, arete adnatus, totus laciniatus lobatusque, 
laciniis 0.2-0.5 mm latis, tenuibus, irregularibus, contiguis, par- 
tim confluentibus, centre saepe demum areolato-diffractis, esore- 
diatus, centrum versus crebre isidiosus, isidiis circ. 0.3 mm 
longis aut brevioribus, 0.1 mm crassis, cylindricis, vulgo ver- 
rucaeformibus, cinereus aut sordide albicans, opacus, sat laevi- 
gatus, neque KHO nec CaCLOj reagens, at his reagentiis unitis 
leviter rubescens, subtus obscuratus, cephalodiis tuberculifor- 
mibus, circ. 0.5-0.7 mm latis, fuscis. Apothecia adpressa, basi 
constricta, mediocria, circ. 1.3-1 mm lata, lecanorina, margine 
