252 FETCH : 



2*5 {ji. On an Aleyrodes on Ochlandra, Avissawella, Ceylon, 

 October, 1909 ; Hapugastenna, Ceylon, October, 1909. 

 Distribution. — Ceylon, in Herb. Peradeniya. 



Aschersonia blumenaviensis P. Henn., Hedwigia (1902), 

 p. 27. — Stromata up to 3 mm. diameter, circular, discoid, 

 up to 1"25 mm. thick, margin rounded above and below, 

 constricted at the base, surrounded by a thin fibrillose hypo- 

 thallus up to 1 mm. wide, upper surface sometimes umbilicate 

 in the centre ; lemon-yellow ; minutely pruinose. Pycnidial 

 orifices circularly arranged, circular, darker than the stroma, 

 scarcely depressed, about 0'05 mm. diameter, with a thin, 

 scarious margin. Pycnidia flattened -globose, up to 0'5 mm. 

 diameter, 0'3 mm. deep, with a conical neck 0' 1 mm. high ; 

 pycnospores fusoid, ends pointed, 10-16 X l'5-2"5 •^, ; 

 paraphyses 90-180 y. long. Aschersonia flavocitrina P. Henn., 

 Hedwigia (1902), p. 307 ; Aschersonia ahnormis P. Henn., 

 Hedwigia (1904), p. 93 : not Aschersonia flavocitrina of Florida 

 writers. 



It may be regretted that the more appropriate name of flavo- 

 citrini cannot be retained for this species. Aschersonia blu- 

 menaviensis, type in Herb. Berlin, Moller No. 67, Brazil, contains 

 old bleached speciniens only ; Hennings gives the spore measure- 

 ment 15-18 X 1*5-2 a. Aschersonia flavocitrina, type in Herb. 

 Berlin, on Psidium, Brazil, collected by Puttenians, San Paulo, 

 contains lemon-yellow stromata ; Hennings gives the measure- 

 ment of the spores as 12-18 X 2 [jL, and thep»araphyses 140-180 x 

 1-1-5 \x. This is a discoid species, with regularly arranged sub- 

 globose pycnidia as in H. discoidea, A. badia, &c., but is alniost 

 stud-shaped, owing to the contraction of the stroma below ; at first 

 glance it may be mistaken for a very short stalked forna of A. 

 basicystis. It bears no resemblance to the Florida species which 

 has been recorded under the name of A. flavocitrina. The type 

 of Aschersoma abnormis, in Herb. Berlin, on Bambusa, Rio de 

 Janeiro, Ule, 2,640, contains two examples only of the fungus : 

 one of them is 4 mm. diameter, discoid, about 1 mm. tliick in the 

 centre, with a regular rigid margin about 1 mm. wide, interrupted 

 on one side ; the other is 2 mm. diameter, and its margin is 

 irregularly convoluted ; the pycnidia contain a brownish mass of 

 spores, which are only 5-8 x 1 jj, ; the paraphyses are scanty, and 

 attain a length of 80 [k only ; it appears to be an abnormal devel- 

 opment of A. blumenaviensis parallel to the small-spored, para- 

 sitized forms of A. basicystis, <fec. 



Distribution. — Brazil, in Herb. Berlin. 



