SPHiEEONESIEI. 443 



elongated, slightly curved, or irregular. — Berfc. Gard. Chron. 

 184:6, p. 601. B. ^' Br. Ann. I^.H. no. 4:33. 



On the joints of wheat stalks, just before the wheat is ripe. 



Forming little discoloured depressed spots on the knots of the stem, espe- 

 cially the upper one, soon spreading till they invest the whole knot, pale 

 fawn-coloured, studded ^vith a number of minute, somewhat raised perithecia, 

 which are at first reddish, eventually black. — 21. J. B. 



1305. Septosria hippocastani. B.(k Br, " Horse chestnut 



Septoria." 



Spots rufous; tendrils delicate ; spores curved, flexuous, linear, 

 simple. — B. Sf Br. Ann. JSf.H. no. 434. Cooke exs. no. 205. 



On leaves of horse chestnut. Common. 



Spots at first minute and scattered, then becoming confluent, and forming 

 broad rufous patches; cirrhi delicate, pale; spores long, linear, simple, 

 curved, flexuous.— ^. d: Br. 



1306. Septoria lituus. B.&Br. " Twig Septoria.' 



Concealed by the cuticle, which is raised into minute pustules; 

 perithecia depressed ; spores filiform, curved at the apex, a 

 little longer than the sporophores. — B. ^' Br. Ann. N.H. no. 744, 

 1. 15,/. 5. 



On smooth twigs. 



Spores '0015 in. (*037 m.m.) long. 



1307. Septoria Ralfsii. B.&Br. " Apple Septoria." 



Sub-cutaneous ; epidermis above the perithecia elevated, centre 

 of the pustules white ; spores straight, multi-nucleate. — B. 8)^ Br. 

 Ann. N.H. no. 74:b, 1. 16, f. 6. 



On decayed apples. 



Forming black irregular patches, dotted with minute pustules, the centre 

 of which is white. Spores 'OOISS in. ('03 m.m.) long, with about six nuclei. 



1308. Septoria insularis. B. d: Br. " Ivy leaf Septoria." 



Spots brown, distinct; epidermis above the perithecia ele- 

 vated, centre of the pustules white ; spores filiform, slightly 

 curved. — B. ^^ Br. Ann. N.H. no. 74:7, 1. 16, f. 8. 



On half dead ivy leaves. 



Forming large definite umber-brown spots, which are rough from the pre- 

 sence of the concealed perithecia, with a white spot in the centre of each 

 pustule; spores filiform, slightly curved '0015 in. (-038 m.m.) long.— >B. (£• Br. 



