CHAP. CV.

coryla'ceae. que'rcus.

1835

1683

fig. 1678., is of a beautiful clear orange-colour within. It grows generally on thestumps of fallen oaks. P. bicolor Bull.,t. 410. f. 3., and P. cm 'sia Pers. Syn.,t p. 657., are found on fallen oak branches ;

and P- acicuk'iris Pers., syn. P. agaricifor-mis, and our fig. 1679., grows in old hol-low trees. Bulgaria inquinans Fries, Pe-ziza inquinans Pers. Syn., p. 631., P.polymorpha Sow., t. 428., and our fig. 1680., is a curiously shaped fungus,and of a pitch-black colour. It is not uncommon on old stumps and pollardoak trees ; and is very tough and elastic. B. sarcoides Fries,anti our fig. 1681.,is also found on old stumps. Cenangium quercinumFries, syn. Hysterium yuercinum Pers. Syn., p. 110.,and ouryig.1682., is extremely com-/-rwss mon on the small dead branchesSI iiSS# which remain attached to the tree.

WtmSg |H When young, it bears a close re-semblance to a worm burrowingbeneath the smooth bark. (Eng. iss4

F/.,v. p.212.) Stictis radiata Pers. Syn., p.674., and our fig. 1683., isfound occasionally on the bark. Tremella mesenterica Retz, and our fig. 1684.,of a bright orange colour; and T. intumescens Smith Eng. Rot., t. 1870.,and oar fig. 1685.; are found on trunks and branches. ig S5The latter is “ in perfection in very wet weather only,when it forms numerous soft and pulpy clusters, twistedand twined like the intestines of some animal; of a ftyy feSfeX

darkish dull brown, but with a shining surface, obscurelydotted.” (Smith.) Exidia auricula Judae Fries, Pezizaauricula Lin., and our fig. 1686., grows on living trees. '

The “ upper surface is corrugated ; and the plants branching from the middlepart, where they are strongest, are somewhat convoluted, so as to give theidea of a human ear. When the plant grows on a perpendicular stump ortree, it turns upwards.” (Smith.) This fungus is found on theoak, the elder, and many other trees. Exidia glandulosa Fries,syn. Tremella flaccida Eng. Rot., t. 2452., and our fig. 1687.,vulgarly called witches’ butter, is a curious drooping fungus,found on the bark. Sclerotium yuercigenum Berk, grows on •felled oaks; Sphae'ria botrydsa Fries, on hard oak wood; S.mutabilis Pers., on indurated stumps tossing about in woods ; S. aspera Fries,on oak branches; S. iida Pers., on oak wood in moist places; S. coronataHoff., S. taleola Fries, and S. quercina Pers., on living branches; and S.leiphse'mia Fries, on dead branches. S. nucula Fries, andHysterium Carmichaelidnu»: Berk., syn. H. varium Grev.,are found on oak bark. H. rugosum Fries is produced onthe smooth branches of the oak, and a variety occurs onthe beech; H. pulicare, on the rotten wood of the oak;and Helminthosporium subulatum Nees on oak branches. 1Oidium aureum Link, of a beautiful golden orange colour,was found in the hollow of the Fairlop Oak; and Psilonia 1587gilva Fries, more frequent on the stems of the larger herbaceous plants,growing on the flat surface of a felled oak.

Besides these, which all grow on the trunk and branches of the trees, thefollowing are found on the roots: — Agaricus aurantiaco-ferrugineus With.-,and Polyporus frondosus Fries, Schceff., t. 127., which is reported excellent forfood, sometimes attains the weight of 30 lb.; and, in Hungary, has been found2 ft. high, and 3 ft. broad. When gathered, it smells like mice. Sclerodermacitrinum Pers., Roll. Fun., t. 116., and oar fig. 1688., also grows on the roots.Amongst the fungi which grow on the ground under the shade of the oak