176 
The Philippine Journal of Science 
1914 
oblongo-ovatis, apice obtusis, bisporis, aparaphysatis, 42-50 p 
longis, 20-26 p latis ; sporidiis parallele positis, oblongis, utrinque 
late rotundatis, 3-4-septatis, ad septa leniter constrictis, fuscis, 
33-40 p longis, 12-15 p latis. 
Palawan, Taytay, Merrill 8819 (type), April, 1913. On living leave3 
of Piper; same locality, Merrill 8851, April, 1913. On leaves of Piper; 
Mt. Capoas, Merrill 9092, April, 1913. On leaves of Piper. 
The genus is related to Polystomella, differing chiefly by the pluricellular, 
colored sporidia and the scantily developed hypostroma. 
AULACOSTROM A Syd. gen. nov. Dothideacearum. 
(Etym. anlax = sulca et stroma.) 
Stromata sub parte exteriore epidermidis evoluta, dein erum- 
pentia, Crustacea, plana, atra, peripherice in hyphas radiantes 
ramosas bulbillulas axillares gerentes dissoluta. Perithecia elon- 
gata, linearia, rima longitudinali aperta, radiatim contexta, nucleo 
mucoso. Asci subglobosi vel ovati, paraphysati, octospori. Spo- 
ridia ex hyalino fusca, didyma. 
AULACOSTROMA PALAWANENSE Syd. sp. nov. (Fig. 7.) 
Epiphyllum plagulas primitus minutas orbiculares mox con- 
fluentes multo majores et irregulares f ormans, subinde folia 
exteriore epidermidis evoluto, atro, grumuloso, piano, crustaceo, 
ad ambitum in hyphas radiantes abeunte; hyphis longiusculis, 
alternatim ramosis, fuscis, rectis vel irregulariter flexuosis, re- 
mote septatis, 4-5.5 p crassis, in axillis bulbillulas irregulares vel 
oblongas concolores vel parum obscuriores gerentibus ; peritheciis 
plus minus numerosis in quoque stromate, laxe vel densiuscule 
dispositis, ab reliquis epidermidis ruptae obtectis, linearibus, 
atris, 0.3-1.2 mm longis, 150-220 p latis, rectis vel varie curvatis 
aut geniculatis, rima longitudinali apertis, contextu atro-fusco, 
marginem versus fusco ex hyphis rectis vel subrectis remote sep- 
tatis (articulis 15-25 p longis) 2.5-3.5 p crassis ad apicem dicho- 
tomo-partitis composite, nucleo hyalino-viridulo mucoso; ascis 
subglobosis, ovatis vel ovato-oblongis, sessilibus, apice rotundatis, 
48-55 p longis, 25-35 p latis, octosporis; paraphysibus superne 
hyalino-viridulis 1.5-2 p crassis, mucosis; sporidiis distichis vel 
tristichis aut conglobatis, ellipsoideis vel oblongo-ellipsoideis, 
utrinque late rotundatis, medio 1-septatis, constrictis, ex hyalino 
fuscis, levibus, 20-25 p longis, 10-12 p latis; pycnidiosporis in 
peritheciis similibus evolutis, sessilibus, cylindraceis, utrinque 
obtusis, continuis, hyalinis, 8-12 p longis, 2-2.5 p latis. 
Palawan, Taytay, Merrill S 175, 8751, April, May, 1913. On leaves of 
Pandanus Merrillii. 
