The Philippine Journal of Science 1914 
oblongo-ovatis, apice obtusis, bisporis, aparaphysatis, 42-50 » 
longis, 20-26 1 latis; sporidiis parallele positis, oblongis, utrinque 
late rotundatis, 3-4-septatis, ad septa leniter constrictis, fuscis, 
33-40 » longis, 12-15 » latis. 
PALAWAN, Taytay, Merrill 8819 (type), April, 1913. On living leaves 
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. 
AULACOSTROMA Syd. gen. nov. Dothideacearum. 
(Etym. aulax=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 formans, subinde folia 
exteriore epidermidis evoluto, atro, grumuloso, plano, crustaceo, 
ad ambitum in hyphas radiantes abeunte; hyphis longiusculis, 
alternatim ramosis, fuscis, rectis vel irregulariter flexuosis, re- 
mote septatis, 4—5.5 » 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, 0.83-1.2 mm longis, 150-220 » 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 » longis) 2.5-3.5 » crassis ad apicem dicho- 
tomo-partitis composito, nucleo hyalino-viridulo mucoso; ascis 
subglobosis, ovatis vel ovato-oblongis, sessilibus, apice rotundatis, 
48-55 » longis, 25-85 ,» latis, octosporis; paraphysibus superne 
hyalino-viridulis 1.5-2 » 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 » longis, 10-12 » latis; pycnidiosporis in 
peritheciis similibus evolutis, sessilibus, cylindraceis, utrinque 
obtusis, continuis, hyalinis, 8-12 » longis, 2-2.5 » latis. 
PALAWAN, Taytay, Merrill S 175, 8751, April, May, 1913. On leaves of 
Pandanus Merrillii. 
