STEREUM MINIMUM (Fig. 556). Very small, 4-6 mic., white, 

 petaloid, to a reduced base. Surface minutely tomentose. Hymenium 

 uneven with ridges. 



This is a little English species collected scantily in Scotland on 

 birch. On account of the ribbed hymenium, it was put in Cladoderris, 

 which is a tropical genus and does not occur in temperate regions. 

 It has only the faintest suggestion of Cladodeiris, and there is no 

 warrant for so classing it. Stevenson, British Fungi, has a cut on 

 page 266 (reproduced, Fig. 556). 



Flo. 556 Fig. 557 



Stereum minimum. Stereum quisquiliare. 



STEREUM QUISQUILIARE (Fig. 557). Also a very small, 

 white, spathulate species known only from types Cuba. It is thinner, 

 more stipitate, and evidently of more fleshy texture than the pre- 

 ceding. There are only four little specimens, and one of them seems 

 to be infundibuliform. The other three are spathulate. 



STEREUM ALBOSTIPATUM. Pileus, when fresh, white, 

 somewhat hygrophanous, as it is "whiter" white when dry. Smooth, 

 both surfaces, very thin, the margin often fimbriate. Stipe lateral, 

 white, tomentose. 



This species I found in Samoa, but were it not tor my collecting 

 notes I would not have known that it was white. The specimens now 

 are brown. It grew gregariously on logs and stumps. Rarely, when 

 growing in an erect position, the specimens were cup-shape, but I 

 noted veiy few such. On comparison, I thought at first it was the 

 same as Stereum decolorans from Cuba at Kew, but I note that the 

 stem is more slender, its habits of growth are different (not imbricate), 

 and the base of decolorans has no tomentose thickening. 



STEREUM DECOLORANS. Thin, smooth, spathulate to a 

 reduced base or short lateral stipe. Color supposed to have been 

 "white, drying ochraceous," but the specimens now are brown, and 

 there are no collector's notes to indicate that they were ever white. 

 They may have been. The plant grew evidently densely imbricate, 

 caespitose. It is known only from the types at Kew. 



STEREUM VENUSTULUM. Very thin, with crenate edges, petaloid, with 

 a short but distinct stipe. Color (now) reddish-brown bay. Glabrous even, the 

 hymenium pruinose. 



This is known from Balansa, 3354, cotype. The collector's notes state "couleur 

 blanche, but no one would suspect it now. It grew on rotten wood. This plant is 



36 



