central, or lateral, or branched, and tuberculate, or it is stemlees, 

 or altogether resupinate. H. Repandum, which is esculent, is 

 common in our woods. Dr. Badham says that when well stewed 

 it makes an excellent dish, with a flavour of oysters, a great recom- 

 mendation, now that those luxuries are so dear. 

 Stem central. 



Hydnum Eepandum, L. B. Outlines, pi. 17, fig. 2. Huss. i, 1. 16. 



H. Zonatum, Batsch., fig. 224. Street, Somerset. A. Clark,Esq. 



H. Nigrun, Fr. Batsch., fig. 223. Fries. Icon. Select., t. 5. 

 Street, Somerset. A. Clark, Esq. 



Stem lateral. 



H. Auriscalpium, Fr, Grev., t. 196. On fir cones. 

 Stemless. Dimidiate. 



H. Ochraceum, P, On sticks ; common. 



The structure of the sporophores in Hydnum Gelatinosum is 



worthy of attention, as a similar fonn occurs in the Genus Tremella, 



which thus forms a gradation from one order to the other. Fries 



remarks of the Tremellini, that Hydnum Gelatinosum is of the 



same nature. 



Resupinate. 



H. Membranaceum, Bull. Sow., t. 327. Leigh Woods. 



H. Weinmanni, Fr. Pers. Myc. Eur., t. 22, fig. 2. Batheaston. 

 Bristol. On sticks. 



H. Ferruginosum, Fr. Nees. Sys., fig. 248. Batheaston. 



H. Niveum, P. Pers. Disp., t. 4, figs. 6, 7. Bristol. 



H. Farinaceum, P. Leigh Woods. 



Ten species out of twenty-three British. 



Genus 27. Sistotrema.* P. 



Hymenium inferior, spread over gill-like, interrupted teeth, distinct, 



and easily separable from the pileus. 



Sistotrema Confluens, P. Grev., t. 248. Stoke Park, Stapleton, 

 Bristol. 



Genus 28. lBPEx.t Fr. 

 Teeth concrete with the subiculum, formed at an early stage of 



growth, disposed in rows, or like network, or connected together. 



* Sistotrema, from sisto, I place, and trema, a pore. t Irpex, a rake. 



