IX, C,2  H. and P. Sydow: Fungi from Palawan 177 
At first the fungus forms small round colonies surrounded by the radiat- 
ing hyphe. The colohies soon become larger, irregular, very often con- 
fluent and spreading over the entire leaf-blade. In the larger colonies the 
surrounding hyphe are only scarcely, if at all, visible, because they more 
or less disappear in age. The hyphe are branched, bearing axillary bulbils 
the structure of which we have not been able to make out. The stromata 
develop beneath the outer portion of the epidermis (see fig. 2). When the 
stromata increase in size the spidermis is broken and pieces of it are to be 
Fia. 7. Aulacostroma palawanense Syd. a, Stroma seen from above (X 5) ; 6, longitudinal 
section through a very young stroma showing its position beneath the outer 
layer of the epidermis (xX 870); ¢, longitudinal section through a mature peri- 
thecium (xX 370); d, ascospore (X 640); e, branched hypha with axillary 
bulbils (X 370). 
found on the mature perithecia. The cells of the epidermis themselves are 
only sparsely filled with hyphal threads. The asci become blue-tinted with 
potassium iodide. 
There are two fungi described from leaves of Pandanus, viz. Aulogra- 
phum Pandani Cke. and A. intricatum Berk. et Br., which are similar to 
the Philippine fungus and seem to belong to the same genus. We have 
seen the types of both species, which are preserved in the Kew Herbarium. 
Aulacographum Pandani differs in having smaller perithecia which are 
126572——6 
