32 MurriI_L: PoLyPORACEAE OF NorTH AMERICA 
18. Stipe ivery-black below, pileus usually ochraceous, surface scarcely depressed, mar- 
in even, not becoming extremely thin. 22. P. elegans. 
Stipe smoky-black below, pileus oe chestnut-colored, depressed at the center 
or behind, margin very thin and irregular. 23. P. fissus. 
1. PoLtyporus HypDNIcEPS B, & C. Jour. Linn. Soc. Bot. Io: 
305. 1868 
This is one of Wright's plants collected in Cuba. Berkeley's” 
description is characteristically brief, but, fortunately, the type 
still exists in fairly good condition in the Kew herbarium. It is” 
readily distinguished from all other species in the genus by the 
short cylindrical or subpyramidal hydnoid processes which it” 
bears on the surface of the pileus near the margin. In shape it — 
is variable and quite irregular, often breaking into fan-shaped lobes — 
as it develops and folding inward or outward at the margin as — 
circumstances determine. The stipe is short, thick, usually 
blackish and often reticulate. The fruit bodies occur at times in 
clusters with their stipes closely united at the base. In ceneral_ 
appearance this species resembles Scutiger griseus and its nea 
allies, but it seems hardly fleshy enough for that group and is 
moreover so much like species of Polyporus in habit that I havi 
retained it in the latter genus as here restricted. : 
FE ee ee AE AE ES ER MM EO DIY RL te 
2. POLYPORUS SCABRICEPS B. & C. Jour. Linn. Soc. Bot. 10: 
305. 1868 , 
This species is well named. The type at Kew, collected by 
Wright in Cuba on decaying wood, is well preserved and still | 
shows the characteristic scabrous covering. Other characters are 
the dark brown surface, involute margin, decurrent, dentate tubes. 
and short brown stipe. Like most of the Cuban species, it is rare 
and very imperfectly known as regards distribution and variation 
ee oR een ee 
3. PoLyporus vircatus B. & C. Jour. Linn. Soc. Bot. 10: 
304. 1868 
Six type plants of this species are at Kew, collected in Cu 
by Wright. They are of the typical Polyporus form and habit” 
with rather delicate, fragile tubes and thin cuticle, which at lengt 
ruptures in a way quite characteristic of the species. This pl 
resembles P. discoideus, but is tougher, firmer and somewha 
smaller in addition to being virgate. 
