BERKELEY'S TYPES OF FUNGI. 103 
PLATYGRAPHA BIVELA, Berk. & Broome, in Journ. Linn. Soc., 
Bot. xiv. (1875) p. 109. 
Gregarious or scattered, immersed, covered at first by a white, 
mealy veil, which is finally ruptured, forming an irregular margin 
which is erect or incurved, whereas an external margin, formed 
of the ruptured epidermis of the host plant, is usually revolute ; 
dise brownish, often with a layer of bloom giving it a glaucous 
appearance ; up to 1 mm. across, circular or irregular in outline ; 
asci cylindric-clavate, apex rounded, not tinged blue with iodine, 
80-85 x 10-12 4; spores 8, irregularly 2-seriate, narrowly 
elliptical, or often slightly widest above the middle and inclined 
to become clavate, at first hyaline, becoming pale brown at 
maturity, 5-7-septate ; septa thick, 18-20 x 6-7 »; paraphyses 
slender, septate, very slightly or frequently not at all thickened 
at the apex. 
Cryptodiscus bivelus, Sacc. Syll. viii. n. 2767. 
On bark. Ceylon (Thwaites, n. 634). 
The ascophores are very frequently grouped in clusters of 2-4 
individuals. 
PLATYG@RAPHA ASTROIDEA, Berk. § Broome, in Journ. Linn. 
Soc., Bot. xiv. (1875) p. 109. (PI. 5. figs. 5, 6.) 
Ascophores gregarious, immersed, covered at first by a white 
mealy veil, which is at length ruptured and forms an irregnlarly 
torn margin, formed of two layers ; disc reddish-brown, 1-2:5 mm. 
across; asci cylindric-clavate, apex rounded and somewhat 
thickened, not tinged blue with iodine, narrowed rather abruptly 
into a short, slender pedicel, about 70-75 x 10-12 p; spores 
irregularly 2-seriate, narrowly elliptical, ends narrowed, smooth, 
hyaline at first, becoming pale brown at maturity, 3-5-septate, 
15-17 x 5-6 w; paraphyses slender, septate, not thickened at the 
apex, but sometimes bearing short branchlets. 
Cryptodiscus astroideus, Sacc. Syll. viii. n. 2766. 
Platygrapha albo-rufa, Berk. & Broome, Journ. Linn. Soc., 
Bot. xiv. (1875) p. 110. 
Cryptodiscus albo-rufus, Sace. Syll. vill. n. 2765. 
On bark. Peradeniya, Ceylon (Thwaites, nn. 69 & 629). 
Distinguished from Platygrapha subreticulata, Berk. & Broome, 
by the longer spores which finally become 5-septate. The margin 
consists of two membranes : the outer, curving outwards, consists 
of the ruptured epidermis of the host, which is white on its inner 
