[Vol. g 



200 



ANNALS OF THE MISSOURI BOTANICAL GARDEN 



clavate, even-walled paraphyses 6 /* in diameter with the tip 

 more or less constricted to form a single moniliform body; 

 gloeocystidia few, inconspicuous, clavate or cylindric, flex- 



uous, 30-45x5-6 n; no basidia with sterig- 

 mata observed; probable spores imbedded 

 in hymenial surface, spherical, even, hya- 

 line, 9 /i in diameter. 



Fructifications at first 2-5 mm. long, 

 about 1-2J mm. broad, becoming confluent 

 into masses 5 cm. long, 1-1^ cm. broad. 



On decorticated dead wood of Quercus 

 Gambelii. New Mexico. September. 



A, cr emeus belongs in the group with 

 A. hotryosuSy A. cerussatus, and A, pen- 

 icillatus but is much thicker than these 

 and differs in its other characters as enum- 

 erated. A. croceus Pat., of Ecuador, dif- 

 fers by reflexed margin, larger and ovoid 

 spores, and absence of paraphyses with 

 moniliform tips. 

 Specimens examined: 

 New Mexico: Cienega Canyon, W. H. Long, 21528, type (in 

 Mo. Bot. Gard. Herb., 55128). 



12. A. tenuis Burt, 

 n. sp. 



Type: in Mo. Bot. 

 Gard. Herb, and in Lloyd 

 Herb. 



Fructifications resupi- 

 nate, effused, very thin, 

 white, pruinose, the mar- 

 gin entire; in structure 

 60-90 p. thick, composed 

 of two kinds of densely 

 arranged, erect organs 

 which start from the sub- a. tenuis. 



stratum and extend to SUr- Paraphyses before treatment with KHO, 



-i^ /t\ ^r: immature basidia, 6; and spores, *. 



face of hymemum (1) x870. 



Fig. 11 



A. cremeus. 



Bottle - brush para- 

 physis, ir; other 

 paraphyses, m; gloeo- 

 cystidium, grZ. X870. 



