SPH^EONEMEI. 435 



1277. Hendersonia arcus. B.&Br. '' Box-twig Hendersonia.''' 



Peritliecia becoming naked, globose ; under the microscope 

 steel-blue; spores arcuate, incrassated in the middle, 3-septate. 

 —5. ^ Br. Ann. N.H. no. 413*. 



On box twigs. Batheaston. 



Perithecia globose, at length naked, sub-gregarious, black, but when seen 

 by transmitted ligbt steel-blue, Sporophores branched ; spores elongated, 

 curved, swollen in the centre, attenuated at either extremity, hyaline, tri- 

 septate. Closely resembling in form and colour S. pulicaris. — B.'SBr. 



1278. Hendersonia mutabilis. B. <£• Br. " Changeable 



Hendersonia." 



Pustules depressed, elliptic, cellular within, spores oblong- 

 elliptic, 3-4 septate ; articulations here and there longitudinally 

 divided.— 5. ^- Br. Ann. N.H. no. 414. 



On dead twigs of plane. Batheaston. 



Pustules small, scarcely bursting the cuticle, elliptic, black, with a few 

 central cells, besides the large cell or perithecium, which occupies the whole 

 of the pustule J the central cells are developed later than the main cell, eo 

 that the spores in the former are simple or uniseptate, while in the larger cell 

 they have acquired a much larger size, and have 3-4 transverse septa with the 

 articulations here and there divided, — B. d: Br. 



1279. Hendersonia sarmentorum. West. *' Vine Hendersonia," 



Perithecia immersed, flattened, dark brown, concealed by the 



epidermis, which is at length lacerated above the poriform ostiole. 



Sporidia brown, pear-shaped, obovate, elliptical or irregular, tri- 



septate, with hyaline pedicels. — West. Bull, de Brux. xviii. n. 60, 



Jig. 2. Cooke Seem. Jour.f. 15. 



On dead twigs of vine. Feb. Highgate. 

 The sporidia are very variable in my specimens. 



1280. Hendersonia corni. lucliel. ''Cornel Hendersonia," 



Perithecia globose, at first covered by the epidermis, black ; 

 sporidia with long deciduous pedicels, oblong, sub-clavate, ob- 

 tuse, four-celled, yellow, the cell next the stem hyaline, — Fdcl. 

 exs.no. 624:. E}ium.Fung.Nassov.p.D0,no.4:16,f.l6. Cooke Seem. 

 Joiir.iv.f.lQ. S. (Hendersonia) Cornicola^ D.C. Fr. S.M. ii. p. 

 530. Curr. Linn. Trans, xxii. t. 69, f. 146. 



On twigs of Cornus. Xot uncommon. Feb. — May. 



" {Fig 158.) 



1281. Hendersonia oreades. Bur. & Mont. " Oak-leaf 



Hendersonia." 



Innate; perithecia small, globose, black, collected on pale 

 spots, or disposed in a ring ; spores shortly stipitate, ovoid, or 



