[VOL.6 



200 



ANNALS OF THE MISSOURI BOTANICAL GARDEN 



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

 more or less constricted to form a single moniliform body; 

 gloeocystidia few, inconspicuous, clavate or cylindric, jQex- 



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 1-2| 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. botryosKrS, 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 /i 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, 



/. o -, . /-I \ 6^; immature basidia, 6: and spores, s. 



face or hymenium — (1) x870. 



Fig. 11 

 A. cremeus. 



Bottle - brush para- 

 physis, 6r; other 

 paraphyses, m; gloeo- 

 cystidium, gl. X870. 



