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[Vol. 7 



ANNALS OF THE MISSOURI BOTANICAL GARDEN 



n 



sal. Actis III. i: 108. 1851; Montagne in d'Orbigny, Voy. 

 Am. Merid. Bot. 2: 48. 1839; in Ramon de la Sagra, Fl. 

 Cub. 4: 228. pi. 14. f. j. 1853; Berkeley & Curtis, Linn. 

 Soc. Bot. Jour. 10: 328. 1868; Sacc. Syll. Fung. 6: 526. 

 1888. T. sericella Berkeley & Curtis, Linn. Soc. Bot. Jour. 

 10: 328. 1868; Sacc. Syll. Fung. 6: 522. 1888. T. affinis 

 Berkeley & Curtis, Linn. Soc. Bot. Jour. 10: 329. 1868 (not 

 T. affinis Pers.); Sacc. Syll. Fung. 6: 530. 1888. Podoscypha 

 aurantiaca (Pers.) Patouillard in Duss, Fl. Crypt. Antilles 

 Fr. 230. 1904. An T. spectabilis LeveillS, Ann. Sci. Nat. 

 Bot. III. 2: 206. 1844? An Stereum xanthellum Cooke, Gre- 

 villeag: 12. 1880? 



Illustrations: Lloyd, loc. cit; Montagne, loc. cit. 

 Fructifications coriaceous, soft, everywhere drying Naples- 

 yellow, losing the bright color in the herbarium; upper surface 

 sericeous, lineate-striate, the margin variable, 

 often somewhat fimbriate; stem thin, with yel- 

 lowish tomentum at the base and sometimes with 

 tomentose mycelial strands; hymenium even, or 

 nearly so, setulose with hyaline hairs under a 

 lens; cystidia hair-like, not incrusted, cylindric, 

 obtuse, 6-8 m in diameter, protruding up to 40 m; 

 spores hyaline, even, 5-8X3-4 p. 



Fructifications 2-3 cm. high; pileus 1-2 cm. 

 in diameter when infundibuliform and 5 mm.-4 

 cm. when flabelliform; stem 1 cm. long, about 

 1 mm. thick. 



On ground and dead wood. West Indies to Par- 

 aguay. June to February. Apparently frequent. 

 S. aurantiacum is unique among the stipitate 

 Stereums by its bright yellow color. Lloyd states 

 that old specimens may lose their bright yellow 

 color and become brown, and the figures by Mon- 

 tagne indicate this also. I have seen only one 

 gathering in which some of the specimens have discolored brown- 

 ish; this gathering from Porto Rico, by Prof. Stevenson, bears 

 the field note: "nearly pure white when collected; became yellow 

 in drying; no yellow showed until partly dried. " The extensive 

 synonymy of this species is due to its occurrence sometimes on 

 the ground, sometimes on wood, sometimes being wholly infundi- 





Fig. 2. 

 S. aurantiacum. 

 Cystidium, basi- 

 dia, and spores, 



X 665. 



