1920] 
BURT—THELEPHORACEAE OF NORTH AMERICA. XII 85 
13. pit: bag ee vesicular organs, nor colored conducting organs.. 14 
. Hymenium lacking cystidia and paraphyses of noteworthy form o or 
14, Cystidia — alata or without incrustation and hair-like, 
Ts NOUN ss... vive. ds 0 0 4 ne ee NE A 
14. Paraphyse noteworthy by bottle-brush form, branching, or color. 
cies having cystidia in addition to noteworthy paraphyses, 
rede c AEN EREMO. AA OCURRE 
15. RE des dense, tawny, zonate, not sulcate, thin, 5-10 mm. in diamete 
O AS sae a 04 AS 9. S. c caespitosum 
15. Soft, ime snuff-brown to bister, concentrically sulcate, reflexed y cm.; 
A bs nee core ere rr or ERR ERE RD 0. S. fuscum 
. Coriaeeous-feshy, bursting out from the bark, — peltate, Been 
own, 2-4 mm. in diameter; no cystidia; o poplar ME m 31. S. rufum 
^ Catisscous-puc ul ue. EDS shaped, lg wi mm. in diameter; 
cystidia present oh PIDO... .. <<<. li is DON 32. S. Pini 
16. Coriaceous-soft, REN, lacking q by wie ae 383. S. purpureum 
16. VOR soft, tomentose, often with hairs becoming agglutinate 
rugose surface; hair-like cystidia presen 4. S. rugosiusculum 
16. Corky, ay resupinate, sometimes reflexed and with the upper side 
orny crust; vesicular bodies very numerous......... . Murrayi 
16. Stony hard pos ughout, the cut surface "iu a ho m: luster, ^ 
thick; Bu rin bodies few; in Mexico and Jamaica . .36. S.s 
17. Exuding a Pim milk, conducting organs of pale, Bior; termin A ice 
tome on Liquidambar and Carpinus in North Carolina and 
Alabama... eo e rS v0 SR ee o^ 87. S. pasior A 
17. Milk d. conducting organs dark, numerous; fructifications cespitos 
imbricated, villose nt hirsute, tobacco-colored; on oak, Canada to 
M n 
o C 
Alabama and westward...... m aeaa OBI sss gausapatum 
17. Milk red, conducting Sains few; fructifications tomentose, concentrically 
sulcate, not cespitose; Florida to Brazil................ 9. S. australe 
17. Milk red, conducting organs dark, numerous; fructifications narrow 
reflexe Ep multizonate; on frondose species, Newfoundland A 
North Carolina. .... . RSS OBI. . rugosum 
. Milk red, iu re organs numerous; on pa spruces, bes hemloc k, 
Canada to Pennsylvania cific e 
18. Fructifications _sulphur- colored, fading to bee i ae "rd 
i not -> dered by a saldan, denser zone; Georgi 
razil, and in Germany AM A AO 42, P Reti 
18. iei deman at first some shade of buff by reason of the airy 
ering, becoming grayish with age, = at length often zonate and 
shining where disappearance of t airy oe reveals the 
ned, dolar nuum of the moda BUE. A bv 
18. Fructifications white or whitish to cartridge-buff.................. 20 
18. Vid kek pe snuff-brown ozblackabove,.. 3.6... ete c eee w ence 21 
. Effuso-reflexed, msi. at first, strigose-hirsute; hymenium warm buff, 
sometimes pa Rois e-gray; intermediate layer bordered by a narrow 
golden zone; pe conducting organs rarely present in the hymenium; 
T 
-I 
mn 
eo 
JEMEN E nas cólb9umvbwv INDE hirsutum 
19. Effuso-reflexed at first, Deere umbonate-sessile, tomentose, sometimes 
with the tomentum bec ming torn into narrow concentric pue end 
bois the bared minec chestnut in the furrows; margin dee no mall 
er Li wisis: 2-7 cm. in diameter; common throughout ‘Nort 
4, asciatum 
19. M osheni to umbonate-sessile, with a thinner covering of tomentum 
than S. fasciatum, becoming more bared and zonate mp the idee "Meer 
“ey flexible, and with the margin normally cut into 2 or 3 large lobes; 
ork and Wisconsin sont R$ . c AA . S. lobatum 
19. Covering of silky, villous fascicles arranged radi ally, becoming glabrous, 
shining, and radially ridged, not lobed nor folded together vw ue 
eet Florida to Dutch Guia... esee 46. S. sicolor 
19. Pilei 2-10 mm. long and broad, ceded together and folded or placed, 
strigose-hairy towards the base; ; marginal portion shining and zoned, 
ca... ...eo..o sosa eee AM 4 6.8.8 ©.) 65 6 AAA 6 oe <0 8 e 
