tomoslng or irregularly porous In places.; spores white. Perennial or 
long persistent fungi, growing on trees or dead wood, closely related to 
the woody polypores through the genera Daedalea and Trametes. The 
distinction drawn by Fries between Lenzites and the polyporoid genera 
is that in the former a radial structure of hymenium is apparent from the 
first, whereas in the latter, the hymenium is porous in the beginning, as 
can be seen in young fruits or near the margins of more mature 
specimens. 
• v » 
A. Generally whitish,pallid, grayish, etc., and plainly tomentose, velvety, 
or villous. 
L. albida Fr. Soft, flat, zoneless, milk-white, with a thin, appressed, 
silky-smooth tomentum; lamellae thin, dichotomous, anastomosing, 
entire, concolorous, effuso-reflexed (effused portion porous), often imbri¬ 
cated. 
L,. betulina (L) Fr. Pileus firm, obsoletely zonate, tomentose, pallid, 
often thick and rather hard at the back, thin at the margin; lamellae 
straight, somewhat branched, anastomosing, pallid or sordid; spores 
4X2 jji (Massee). This is a species commonly reported. It is variable 
in color, and Peck has given a varietal name of rufozovata to a form 
with a markedly brown pileus with one or more reddish subglabrous 
zones. Old specimens are pale, or frequently greenish from the presence 
of a small alga, a not infrequent condition in other tomentose persistent 
fungi. Grows to several inches in extent, according to situation, and 
projects one or two inches. On birch and other deciduous trees. 
L. flaccida Fr. is said to differ from the last by its thin Jlaccid, zonate 
pileus, which has been described as strigose, and as velvety hairy ; by its 
broader, more crowded lamellae, which have a daedaleoid appearance at 
first; and by its spores, which are 7X5 p. (Massee). The pileus is nar¬ 
rowed behind to the point of attachment. Fries remarks that the gills 
do not anastomose, but are forked toward the base, at first white, then 
pallid, tinged with gray or brown. On deciduous trees. Forms which 
seem to be referable to this species rather than to the preceding should 
be studied carefully. Specimens of true L. flaccida are desired for the 
club herbarium. 
L. ungulaeformis B & C. Hard, woody, dirty white, subtriquetrous, 
rather elongated, villous when young, but soon smooth and shining; 
surface unequal, once or twice sulcate, with some trace of the almost 
obliterated villosity towards the margin. Gills broad, thin, but woody, 
branched, and here and there forming sinuous pores. Allied to L. 
betulina , but more rigid. 
L. heteromorpha Fr. Coriaceous, effuso-reflexed, thin, gibbous, fibrous- 
rugose, zoneless, pallid-whitish, margin incised on account of the very 
broad lamellae, which are crowded, somewhat branched, white and 
excurrent. A variable species known to Fries also in daedaleoid and 
trametoid forms. Var. resupinata Fr., is porous and resupinate. 
L. variegata Fr. Coriaceous, rigid, plane, velvety, banded with 
zones of a different color, margin becoming white; lamellae broad, 
rather thick, unequal, anastomosing, white, edge at length acute, lacer¬ 
ate. A species easily distinguished by its resemblance above to Polystictus 
versicolor. 
B. Brown , tarvny, ferruginous, etc:, and generally not glabrous. 
L. saepiaria (Wulf.) Fr. Coriaceous, hard, zoned, strigose tomentose, 
scrupose, date-brown, margin and lamellae rather thick; lamellae branched, 
anastomosing, dull yellowish. Usually on pine. Hymenium very change¬ 
able, even entirely polyporoid, in which case it is var.porosa Peck; a 
resupinate form with lacerate anastomosing lamellae, resembling Irpex 
is var. dent if era Peck. 
