924 SPH^UIACEI. 



Scattered over the leaves and quite superficial, attached by a few hyaline 

 creeping threads. Perithecia globose, beset with very long radiating, rigid, 

 somewhat pellucid, articulated bristles, which are black to the naked eye, 

 but purplish-brown under the microscope ; when young their apices are often 

 swollen. Asci rather short, clavate. Sporidia biseriate, oblong-elliptic, 

 about four times as long as broad. 



The perithecia are much larger than in V.chctfominm, the hairs are longer, 

 pellucid, and not opaque ; asci clavate, and not fusiform, and the uniseptate 

 sporidia are shorter. 



2781. Venturia myrtilli. Coolie. "Bilberry Yenturia." 



Scattered over either surface; perithecia globose, black, 

 coYered with long rigid hairs ; asci yentricose, attenuated up- 

 wards ; sporidia biseriate or crowded, uniseptate, obtuse above, 

 attenuated below, hyaline. — Cooke Seem. Journ. 1866, i. 49,/. 4. 

 Cooke exs. no. IQA,. Cooke L.F, no. ^2. 



On semi-putrid leaves of Vaccinium myrtillus. Shere, Surrey. 

 Sporidia (-0004 in.) '01 m.m. long. 



2782. Venturia ilicifolia. Coole. " Holly-leaf Venturia." 



Scattered over the upper surface (perhaps also on both sur- 

 faces) superficial ; perithecia minute, subglobose, black, clad with 

 long, rigid, divergent hairs ; asci subfusiform, minute ; sporidia 

 biseriate, narrowly elliptic or lanceolate, uniseptate, scarcely 

 constricted. — Cooke Seem. Journ. 1866, t. 49,/. 5. 



On semi-putrid leaves of holly and sallow. Shere, Surrey. 



Asci (-0003 in.) '02 m.m. long. Sporidia (-0003 in.) '008 m.m. long. The 

 species on sallow {Salix caprcea) is not specifically distinct, as far as can be 

 judged from a single specimen. (Fig. 398.^ 



2783. Venturia Integra. Cooke. " Entire spored Ventura." 



Perithecia scattered, superficial, small, delicate, dark brown, 

 covered with long flexuous hairs ; asci narrowly clavate ; spori- 

 dia biseriate, elliptic, entire, endochrome minutely granular, 

 nearly colourless. 



On leaves of Corylus avellana. Shere. (Dr. Capron.) 

 Sporidia •000--0004 in. 



** Corticolous. 



2784. Venturia barbula. B. <f- Br. " Pine Bark Venturia." 



C^espitose ; perithecia globose, collapsed, slightly pilose ; spo- 

 ridia oblong, uniseptate. — Sphceria barbula, B. ^ Br.Ann.N.H. 

 710. 870, ^.10,/ 20. 



