IRPEX. 



249 



* Stipitate. 



** Pendulous with the pileus extended behind. 

 *** Sessile or effuso-reflexed, marginate. 

 **** Resupinate. 



* Stipitate. 

 No British species. 



** Pe?idulous with the pileus exte?ided behind. 



1. I. pendulus Fr. — Pilei light 

 yellow, exte?ided behi?id, pe7tdulous, 

 membranaceous, plicate, adpressedly 

 squamuloso-pilose. Teeth in rows, 

 large, incised, shining white. 



Membrane of the pileus elastic, but when 

 extended it contracts again. Its characters 

 are wholly those of the genus, but it is not 

 allied to any other plant among the Hydna. 

 It is nearly allied to Cyphella, more remote- 

 ly to Trogia, and might almost be regarded 

 as the type of a separate genus. 



Irpex 



On pine. Rare. 

 (Edin. Herbarium). 



Castle Semple 

 Menmuir. 



Name — pendo, to hang. Pendulous. 

 Fr. Hym. Eur. p. 620. Berk. Out. p. 262. 

 C. Hbk. n. 870. S. Mycol. Scot. n. 822. 

 — Alb. 6^ Schw. p. 261. /. 6. f. 7. 



LXXVII. Irpex obliqmis. Nat- 

 ural size. Section twice natural 



size. 



*** Sessile or effuso-reflexed, marginate. 



2. I. fusco-violaceus Fr. — Pileus 5 cent. (2 in.) long, more 

 than 2.5 cent. (1 in.) broad, white i7iclini7ig to hoary, effuso- 

 reflexed, coriaceous, silky, zoned. Teeth in rows in the form of 

 plates, fiiscous-violaceotis, incised at the apex. 



It differs certainly from Polyporus abietinus. It is marked with a few 

 depressed, concentrically sulcate zones of the same colour. Margin deflexed, 

 often repand. Often wholly effused. 



On pine trunks. Rare. Leigh Woods. 



Name — From the colour of the teeth. Fr. Hym. Eur. p. 620. Elench. p. 

 144. Br. Bath. Trans. 1870, p. 87. C. Hbk. n. 873. Kl. Bor. t. 536.— 

 Willd. Bot. Mag. iv. t. 2. / 5. 



**#* Resupifiate. 



3. I. Johnstoni Berk.— Resupinate, 5 cent. (2 in.) long, pure 

 white, coriaceo-membranaceous, separable from the matrix, cir- 



