FUNGORUM

Hydneæ, Radul um. 493
55. Irpex viticola C. et Peck 34 Rep. p. 43. - Resupinatus, suborbicularis
vel in plagulas elongatas confluens, margine plerumque
definito et leniter reflexo, subcinereus ; dentibus compressis, subincisis,
acutis vel obtusis, albidis vel pallidis.
Hab. in sarmentis emortuis Vitis North Greenbush Amer. bor.
RADULUM Fr. Elench. p. 148, Hym. Eur. p. 623 (Etym. radula ob
hymenium asperum). - Hymenium amphigenum, tuberculosum.
Tubercula rudia, difformia, vulgo elongata, obtusa, ceracea (ex-
ceptis paucis)-, inordidata, discreta. Basidia tetraspora, etiam in
hymenio levigato præsentia. Epixyla, resupinato-effusa, sæpe per
corticem erumpentia.
* Denudata, maxime varia.
1. Radulum pendulum Fr. EI. p. 149, Hym. Eur. p. 623, Ic. t. 195,
f. 1. - Longitudinaliter eflusum, lacteo-pallens; margine superne
breviter reflexo, coriaceo-molli; hymenio infero, tuberculis elongatis,
vagis, pendulis.
Hab. in Alni et Betulæ e rimis corticis erumpens, hieme raro et
ad ligna pinea in Europa. - Pilei 21/2 cm. et ultra lati sed pars reflexa
vix. 4-6 mm. lata. Tubercula fere sequentis, sed definite ter-
ram spectantia.
2. Radulum orbiculare Fr. Elench. p. 149-151, ubi syn. et plena historia,
Hym Eur. pag. 623, Grevill. t. 278, Hydnum Radula Syst.
Myc. I, p. 423, Sistotrema n. 8, 10, 11, Pers. Myc. Eur. 2, p. 195,
Secr. n. 34 non obstat. - A. sitanuem orbiculare, confluens, ex
albo lutescens, ambitu byssino; tuberculis elongatis, subteretibus,
sparsis v. fasciculatis. B. hornotinum vernale, ceraceo-carnosum,
glabrum, carneum; tuberculis mollioribus, brevioribus, quasi detri-
tis; sporis minutissimis, ovato-cylindricis, subcurvatis, hyalinis (sec.
Karst., an?).
Hab. ad cortices Betulæ, Salicis, Populi, Carpini, Alni, Pruni,
Tiliæ ubique in Europa, ad ligna corrupta Slingerlands et Mecha-
nicsviIle New York Amer. fœder. (PECK), ad Nyssam et Cerasum
in Pensilvania (MOCHENER) et in Africa austr. - 5-8 cm. latum,
membranaceum vel 5 mm. crassum. Mi re versiforme, sed distinctissimum,
cum Irpice paradoxo tantum comparandum. Tubercula
variant flexuosa, vernalia detrita videntur, R. lœti simillima. -
Var. luteolum Quél. 14 Suppl. p. 7: effusum, tomentosum, araneoso-lanosum,
margine niveum; imymenio glabro, dentibus acutis.
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