148 YORKSHIRE NATURALISTS' UNION. 



N.E. — Scarboro', Mulgrave Woods (F.F., igoo). 

 N.W.— Masham (Nat., May '03). 

 On trunks and stumps, mostly birch. 



Var. nummularlus Fr. 

 Mid W.— Studley Royal (F.F., '81). 

 S.E.— Sledmere (W.W.S.). 



1014. Polypopus petaloides Fr. 



N.W. — Masham, on old stump (Nat., May '03) 



1015. Polypopus umbellatus Fr. 



S.W. — Eller Carr, Cullingworth, on old stump. 



1016. Polypopus frondosus Fr. 



S.W. — Howden Rough, Cullingworth. On oak stump. 



1017. Polypopus intybaceus Fr. 

 N.E. — Scarboro'. On trunks and stumps. 

 Mid W.— Bramhope (F.F., '88). 



S.W.— Shipley Glen (Lees' FL). Hudderstield (F.F.,'95). 

 S.E.— Escrick (F.F., '96). 



1018. Polyporus giganteus Fr. 



S.W. — " Among the decaying fragments of a decayed elm 

 root, Hx. Aug. 1786" (Bolton, Tab. 76) 



Frequent on elm and other stumps and roots. 



Recorded for all the county divisions. Distinguished from 

 allied species by the hymenium becoming dark when bruised. 

 1019. — Polyporus sulphureus Fr. 



S.W. — •" ]Most commonly on living wood, in some cavity 

 occasioned by the lopping of a branch, or some other accident. 

 Shibden Hall, Hx. 1786" (Bolton, Tab. 75). 



Frequent on the trunks of living trees of many kinds. 



Recorded for all the county divisions. 



An elegant fungus but a destructive parasite. 



1020. Polyporus alligatus Fr. 

 S.E.— Pond Wood, Boynton (W.W.S.). 



S.W. — Potridings Wood, on fallen trunk (F".F., 1901). 



1021. Polyporus heteroclitus (Bolton) Fr. 



S.W. — " On the ground under oak trees, Fixby Hall "" 

 (Bolton, Tab. 164). Probably growing from decaying stump 

 covered with soil. 



Trans. Y.N.U., 1904 (pub. 1904). Bot. Series, Vol. 6. 



