280 



POLYTEIAS PBAEMOKSA, Hack. 



A smut, Usfilago poli/iriudii^ Mass {UsUlaginaceae) is re- 

 corded on the ovaries of this plant. 



Ptekocarpus indicts, Willd. {Lpguminosae). 



Owing to the loss of so many famous avenues of this. tree in the 

 country it has received more attention than other ornamental trees. 

 Consequently six fungi have so far been reported as having l>een 

 found growing on it, although except the leaf fungi all were col- 

 lected on dead stumps. It is possible however, that some may be 

 responsil)le for hastening its death, the fungus fructifications only 

 appearing at a later stage when the damage is done, and in this 

 connection the shiny chocolate browii bracket fungus, sometimes 

 appearing with a false stalk, Ganodermus hicidits (Polyporaceae) 

 is more than suspected. Other Polyporaceous bracket fungi re- 

 corded are Polystictus hirsuius Fr., and Polysiictus floridanus, 

 Sacc. The small white tomentose fan shaped ScMzopliyllum com- 

 mune Fr. (Agaricaceae) is commonly found on dead wood but 

 doubtless as a saprophyte only. Leaf fungi recorded are Dothi- 

 della pterocarpi, Mass. (DofJiideaceae) and Hclmintkosporium 

 ohovaium, Mass. (Dematiuceae) . 



Ehodomyrtus tomentosa, Wight, (Myrtaceae) . Kamunting. 



T^vo fungi are recorded by Baker for this shrub Dimerium 

 singaporense Sacc. (Perisporwceae) and Podo.'^porium penicillvum 

 Speg. (Stilhaceae). 



KosA, sp. (Rosaceae) Eose. 



Only one fungus Sphaerostilhe cinnabariiia, Tul. (Hypocre- 

 aceae) is recorded for our cultivated roses. It causes the branches 

 to blacken and die. 



Sacciiaeium OFriciNARUM. Linn. {Gramineae) . Sugar Cane. 



The fact that only one fungus is recorded for the Sugar Cane 

 can only be attributed to the fact, that the cane had ceased to be 

 cultivated locally as a first class crop, before the study of diseases 

 was seriously attempted here. A red smut fungus, Trichosphoeria 

 sacchari Mass. (Sphaeriaceae) is the only record we have. 



Saraca, sp. '{Leguminosae) , 



Microthyrium hrownemium, Sacc. (Microthyriaceae) was col- 

 lected by Baker at Singapore on the leaves of this shrub. 



iSelosia sumatrensis, {Gramineae) . 



Singapore materia^l in the herbarium shows the fruits of this 

 grass to be infected with a smut Ustilago flavo-nigrescens, B. and 

 C. {U stilaginaceae) . 



Shorea, ^sp. {Diptcrocarpaceae) , 'KevdJiii. 



Bancroft's list of jungle hosts of Pink Disease includes this 

 tree. 



