f) 
36 MurriL_: PoOLypoRACEAE OF NorTH AMERICA 
plane, 1.5-2.5 X 0.03-0.08 cm.; surface minutely tomentose, radi- 
ate-rugose, isabelline, fulvous at the center ; margin straight or 
repand, even, glabrous, entirely devoid of teeth or cilia: context 
0.2-—0.7 mm. thick, tough, white, translucent, especially near the 
margin ; tubes o.I mm. long, 8 to a mm., adnate, white, cylin- 
drical, ee edges thick, entire ; spores ovoid, smooth, hyaline, 
3.5-4 X 4.5-5 fe: stipe central, tough, elastic, slender, equal, 
ee ioe See pti much compressed in drying, 
2-4 cm long, I-2 mm. t 
The above description pie species is made from dried plants 
now in the herbarium of the New York Botanical Garden, cole 
lected by C. L. Smith in Nicaragua. 
Type plants kindly furnished me by Macbride agree in all re- 
spects with these, being a part of the same collection. The spe- 
cies is nearly related to P. Tricholoma, but the pileus is very thin 
and translucent, the margin entirely glabrous and the po“ 
scarcely one eighth of a millimeter in diameter. 
14. PoLyporus aEMULANS B. & C. Jour. Linn. Soc. 
Bot. 10: 304. 1868. = 
Very little is known of this species beyond the small type call 
lection from Cuba and Berkeley’s rather meager description. The 
types are well preserved, however, and show decided characters. 
They resemble P. arcu/arius in having alveolar tubes, but these tub 
are broad and shallow and disappear near the margin, leaving 4 
sterile marginal band one or two millimeters in diameter. 
habit, the species resembles P. Polyporus. The whole plant is thin 
and tough, with brown central stipe. a 
15. Polyporus arculariellus nom. nov. 
Favolus Curtisn Berk. Grevillea, 2 GS. 28s; 
Kew by Curtis from his North Carolina collections. 
preserved, however, and shows the very thin pellucid pileus a 
mented around the margin with long cilia, the oblong favoloid 
tubes and the centrally attached tapering stipe that characteri@t 
the species. It is a near ally of Polyporus arcularius, thoug™ 
smaller and much more delicate, and also closely resembles §' 
ciliated forms as P. Tricholoma and its near allies ; so that its na 
ural affinities appear to be with Polyporus rather than with /@ 
