106 



(Vol. 7 



ANNALS OF THE MISSOURI BOTANICAL GARDEN 



An T. macrorrhiza L^veille, Ann. Sci. Nat. Bot. III. 5: 146. 

 1818? See Lloyd, loc. cit., p. 28. 



Illustrations: Lloyd, loc. cit. Not by the figures under this 

 name in other works, as Engl. & Prantl, Nat. Pflanzenfam., for 

 example. 



Fructifications cespitose, coriaceous, confluent, infundibuli- 

 form and deeply split on one side, or little developed on one side 

 and prolonged and petaloid on the other; upper 

 surface of pilei glabrous, radially plicate, drying 

 diamine-brown, the margin paler and more or less 

 lobed; stems solid, buffy brown, short, tomen- 

 tose, branched above; hymenium radially plicate, 

 nearly white, pruinose, often cracked; pileus in 

 section 400 /x thick, composed of densely and longi- 

 tudinally arranged, hyaline hyphae 3 m in diam- 

 eter; no cystidia; gloeocystidia 4§ /x in diameter, 

 barely distinguishable from the basidia; spores 

 hyaline, even, subglobose, 3§-4| fx in diameter. 



Fructifications 4-5 cm. high; pilei 1-2 cm. in 

 diameter; stems about 1 cm. long, 1-2 mm. in 

 diameter. 



In a dense cluster of about 16 fructifications 

 springing from an area of 2 square centimeters 

 on the ground. Porto Rico to British Guiana. Summer. 



I have not seen the type of Stereum elegans from Dutch Guiana 

 nor reference to its existence; a collection from Porto Rico on 

 which the preceding description is based has fructifications 

 growing on the ground closely together and concrescent where 

 in contact; the pilei are plicate on both surfaces and contrast 

 so greatly in color that it seems as though fuscous in connection 

 with the upper side and whitish flesh-color and pruinose for the 

 under side might have been used for the color difference. The 

 specimens of this collection are not zonate; infundibuliform 

 without any qualification of this character does not seem accu- 

 rate ; hence it may be that this Porto Rican collection is merely 

 near, rather than the true, Stereum elegans. However, solitary 

 fructifications growing on wood, as figured in Engl. & Prantl, 

 Pflanzenfam., are certainly a very different species from >Sr. 

 elegans, the original description of which is as follows: 



Fig. 7. 



S. elegans. 



Gloeocystidia 



X 665. 



