276 POLYPOREAE OF SOUTH AFRICA. 



season, concolorous with context, mouths subrotund approximating 

 4 to the mm.; edges entire, thick, brown; spores hyaline, globose, 

 3/x to 4/a diam.; setae scanty, straight to curved at apex; hyphae 

 4/a diam. 



Distribution. — Found by J. B. Keet, Knysna, Cape Province, 

 on Gymnosporia jteduncularis. 



Differs from Fomes rimosus in presence of setae and hyaline 

 spores and from Fomes robustus in smaller spores; from Fomes 

 yucatanensis it differs in its hyaline spores. None of the specimens 

 seen by me were rimose. In the original description setae are said 

 to be absent, and I believe Mr. C. G. Lloyd was the first who 

 recorded them in this species. 



8. Fomes pectinatus (Klotz) Cke. 



Pilei thin, woody, perennial, sessile, imbricate, triquetrous, 

 flabelliform or dimidiate, applanate, somewhat decurrent behind, 

 2 cm. to 12 cm. by 1-7 cm. to 9 cm. by 01 cm. to 0-4 cm.; surface 

 repeatedly slightly sulcate with close concentric raised ridges, yel- 

 lowish brown to brown, often somewhat tuberculate, velvety, 

 becoming glabrous and black with age, not rimose; context thin, 

 woody, 01 mm. or less thick, yellowish-brown to dark brown; tubes 

 indistinctly stratified, 0-9 mm. to 1-2 mm. long each season, con- 

 colorous with context; mouths circular, 7 to 9 to the mm.; edges 

 thin, entire, yellowish-brown to dark-brown; spores not found; 

 setae none; hyphae 2-8jx to 3-7/x diam. 



Distribution. — Recorded from Eastern Cape Forest Con- 

 servancy and Nottingham Road, Natal, by the writer. 



Recognised by the thin pilei, with the closely concentric ridges 

 on the surface. 



9. Fomes rimosus (Berk.) Cke. 



Pileus hard and woody, perennial, sessile, dimidiate, applanate 

 to ungulate, frequently very large 3 cm. to 73 cm. by 3 cm. to 

 36 cm. by 1-5 cm. to 28 cm.; surface velvety and yellowish brown, 

 concentrically sulcate, soon becoming glabrous, black and very 

 much rimose and ragged; margin yellowish brown, velvety; con- 

 text yellowish brown to rusty brown, woody, 0-5 mm. to 1-5 mm. 

 thick; tubes in indistinct strata, 2 to 6 mm. long each season; 

 mouths minute, circular, 3 to 6 to the mm.; edges entire, thick, 

 vellowish brown to dark brown, velvety to rough; spores globose 

 to slightly oval, 4-35/x to 5/x diam., rusty brown; setae none; 

 hyphae 3/a to 4/j, diam. 



Distribution. — This is one of the commonest South African 

 Polyporeae and has been found on a large number of different hosts. 

 It is recorded by J. D. Keet from Eastern Cape Forest Conservancy 

 on Ptaeroxylon utile, Scholia latifolia, Rhus laevigata, Fleurostyla 

 sp., Curtisea faginea, Scolojna m/undii, Kiggelaria africana, 

 Xi/malos monospora, Olea la uri folia ; A. Legat on Eloeodendron 

 croceum at Knysna; from the Transvaal on Acacia sp. ; undeter- 



