236 FUNGI. 



Ayariciis gambosus, Fr., Marasmiits orcatlcs, Fr., and some others 

 grow in rings. Hence it will be seen that, within certain limits, 

 there is considerable variation in the habitats of the Agnricini. 



Boleti do not differ much from Agaricini in their localization. 

 They seem to prefer woods or borders of woods to pastures, 

 seldom being found in the latter. One species, D. parasiticns, 

 Bull, grows on old specimens of Sclcrodcrma, otherwise they are 

 for the most part terrestrial. 



Polyporl also have no wide range of habitat, except in choice 

 of trees on which to grow, for the majority of them are corti- 

 colous. The section Mesopus, which has a distinct central stem, 

 has some species which prefer the ground. Polyporus tubcrastr.r, 

 JP ., in Italy springs from the Pielrafungliaia,* and is cultivated 

 far food as well as Polyporus avellanus, which is reared from 

 charred blocks of cob-nut trees. 



In other genera of the Polyporci similar habitats prevail. 

 J\fcrulius lacrymans, Fr., one form of dry rot, occurs in cellars, 

 and too often on worked timber ; whilst McruUifS himnntoides, 

 Fr., is much more delicate, sometimes running over plants in 

 conservatories. 



HYDNEI. There is nothing calling for special note on the 

 habitats of these fungi. The stipitate species of Uydnum are 

 some of them found in woods, others on heaths, one on fir-cones, 

 while the rest have similar habitats to the species of Polyporus. 

 ^ AURICULARINI. The genera Hymcnochcete, Stereum, and Cor- 

 ticitun, with some species of Thcle.pliora, run over corticated or 

 decorticated wood ; other species of TkclepJiora grow on the 

 ground. The Pezifcuid forms of Cypliella and Sohnia, like species 

 of Peziza, sometimes occur on bark, and of the former genus 

 some on grasses and others on moss. 



CLAVAUJICI. The interesting, often brightly-coloured, tufts ot 

 Clavaria arc usually found amongst grass, growing directly from 

 the ground. Only in rare instances do they occur on dead leaves 

 or herbaceous stems. Calocera probably should be classed with 

 the Tremcllini, to which its structure seems more closely allied. 

 The species are developed on wood. The species of Typhula 



* Badliam's " Esculent Fnrgnses,' 1 Ed. i. pP- 42, 11C. 



