21,2 Sydow: Amboina Fungi Collected by Robinson 137 
APPENDICULELLA Von Hoehnel 
APPENDICULELLA CALOSTROMA (Desm.) v. Hoehn. 
Amboina, town of Amboina, Reliquiae Robinsonianae 2415, 
July 23, 1913, on leaves of Rubus fraxinifolius. 
PARODIELLA Spegazzini 
PARODIELLA PARAGUAYENSIS Speg. 
Amboina, Batoe mera, Reliquiae Robinsonianae 2184, July 
20, 1913, on leaves of Desmodium triflorum. 
DIATHRYPTON Sydow genus novum 
Mycelium superficiale, copiose evolutum, ramosum, septatum, 
hyphopodiatum. Perithecia ad hyphas mycelii orta, ovato-glo- 
bosa, astoma, cellulosa, mollia, mox et facile histolyse mucosa 
dissoluta, monoascigera. Asci aparaphysati, octospori. Sporae 
bicellulares, coloratae. 
DIATHRYPTON AMBOINENSE Syd. sp. nov. 
Amphigenum, praecipue epiphyllum, plagulas tenerrimas atro- 
griseas variae dimensionis formans;-mycelium copiose evolutum, 
ex hyphis rectis vel rectiusculis copiose et saepe opposite ramosis 
fuscis 4-5 » crassis septatis (articulis variae longitudinis 8-25 » 
longis) compositum; hyphopodia numerosa, unilateralia vel 
Saepius et praecipue ad hyphas primarias crassiores opposita, 
continua, lageniformia, 12-15 » longa, basi 5-7 » crassa; peri- 
thecia dense gregaria, ad hyphas mycelii orta, ovato-globosa, 
astoma, 45-60 » alta, mollia, tenuiter cellulosa, pariete mox et 
facile histolysis ope in cellulas dilute brunneas rotundatas vel 
angulosas 6-10 » diam. dissoluto, monoascigera; asci ovato- 
globosi, octospori, aparaphysati, 40-50 » longi, 35-42 ,» lati; 
sporae ellipsoideo-oblongae, utrinque rotundatae, medio septatae 
et valde constrictae, 21-26 » longae, 10-13 » latae, loculis aequa- 
libus vel supero subinde paullo latiore, facillime secedentibus. 
Amboina, Hatalai, Reliquiae Robinsonianae 2092, October 24, 
1913, on leaves of Schuurmansia elegans. 
The new genus is closely related to Phaeoschiffnerula Theiss. 
from which it differs by the monoascigerous perithecia. These 
originate from the hyphopodia as is the case with Ph. composi- 
tarum Theiss.2. We have seen a few isolated brown conidia, 
first two-celled, and later four-celled, measuring about 20-26 
by 8-9 x. Perhaps these have originated from the mycelium; 
* Verhandl. Zool. bot. Ges. Wien (1916) 337. 
