HYPOCRELLA AND ASCHERSONIA. 243 



40-80 (/, long. Ascigerous stroma developing from the pyeni- 

 dial stroma, rarely distinct, consisting of globose, ovoid, or 

 cyliudric processes, arising round the margin of the flatter 

 stromata, or anywhere on the pulvinate stromata; processes, 

 0'3-0'7 mm. diameter, up to 0*6 mm. high, white or yellow, 

 pruinose, each containing one perithecium; perithecia elon- 

 gated flask-shaped, 0*5 mm. deep, 0*3 mm. diameter, wall 

 yellow, ostiolum translucent ; asci up to 220 \l long, 12-16 \i. 

 diameter ; part-spores cylindric, tapering slightly towards the 

 ends, ends truncate (barrel-shaped), 8-12 x 2-2*5 jx, becoming 

 oval, 8-10 X 3-5 [l. Hypocrella Warneckiana P. Henn., 

 Bugler's Bot. Jahrb., XXXVIII., p. 113 (1905) ; Barya 

 salaccensis Rac, Bull. Akad. Sc. Cracovie (1906), p. 909. 

 Aschersonia stage — Ascherso?bia placenta B. & Bi., Jour. 

 Linn. Soc, XIV., p. 89 (1873) ; Aschersonia novoguineensis 

 P. Henn., Engler's Bot. Jahrb., XXV. (1898), p. 509; 

 Aschersonia javanica Penz. & Sacc, Malpighia (1901), 

 p. 236 ; Aschersonia lecanioides P. Henn,, Hedwigia (1902), 

 p. 145. 



This species is very variable, and it is only with the help of a 

 large series from Ceylon that it has been possible to put the 

 various type collections together. The ascigerous form generally 

 has well-developed processes, but in some cases these are reduced 

 to pulvinate swellings, and in a few instances the perithecia are 

 immersed in the pulvinate stroma. Specimens which do not bear 

 the conidial stage exactly resemble Hypocrella Amomi, but tlie 

 latter differs in the shape of its ascospores (part-spores). The 

 type specimen of Hypocrella Raciborskii has been lost (fide Zimmer- 

 mann in litt.), but Zinunermann's figure and description fit the 

 other species placed here. Zimraermann described the perithecia 

 near the margin as entirely immersed, but his figure No. 1 scarcely 

 supports that, and, as already stated, this species varies in that 

 respect. Raciborski {loc. cit.) noted that the outer perithecia 

 may be almost free {i.e., situated in projecting processes), while 

 tliose near the centre may be more or less immersed. The type 

 specimen of Barya salaccensis was collected on a scale insect on 

 leaves of Castanea argentea and Lasianthus sp. at Salak and 

 (bedell, Java ; the specimens, ex Herb. Raciborski, on Lasianthus, 

 include purely pycnidial stromata, as well as those described by 

 him ; one stroma is entirely perithecial. Hypocrella Warneckiana 

 P. Henn., type in Herb. Berlin, from Amani, on leaves of Myrian- 

 thus arhoreus (Warnecke No. 368) agrees completely with the 

 above, except tliat the ascospores are in some cases wound in a 

 flatter spiral ; this, however, is not constant, even in the same 



