[Vol. 3 

 336 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



divisions which are more distinct towards the margin; in 

 structure 200-250/>i thick, with hyphae fuscous under the micro- 

 scope, thick-walled, even, loosely 

 interwoven from substratum to 

 hymenium, densely interwoven in 

 the hymenium and bearing hya- 

 line, flexuous, suberect terminal 

 branches or paraphyses and hya- 

 line probasidia which are ex- 

 ^ig- ^ ceeded by the paraphyses ; spores 



S. Langloisii. it i ,'-,,-, 



a, probasidium forming a hyahue. Simple, even, shghtly 



spore-bearing organ; 6, two curved, 15-21 X S-TVsiu, appax- 

 spore-bearing organs; p, para- ' '^^ z^*^' t^j^j^c^x 



physes; s, spores. X 640. eutly produced singly at the 



apex of a nearly straight, 2-3-celled, spore-bearing organ 

 into which the probasidium develops. 



Fructification up to 5 cm. long, 2i/^ cm. broad, % mm. 

 thick. 



On bark of living branches of Crataegus, Carpinus, and 

 water oak. Florida to Louisiana and in Grenada. Novem- 

 ber to May. 



This species resembles S. frustulosum in having the fruc- 

 tification divided into narrow sinuous divisions and differs 

 from that species in being blue colored, verging into smoke- 

 gray or paler in some specimens, instead of honey-yellow. 

 The specimen from Grenada is thinner than those from 

 other localities. 



Specimens examined: 

 Exsiccati: Ravenel, Fungi Am., 450, under the name 8te- 



reum pruinatum. 

 Florida: Gainesville, H. E. Stevens, comm. by E. Bartholo- 

 mew, 40a (in Mo. Bot. Gard. Herb., 44211) ; same locality, 



Ravenel, in Eavenel, Fungi Am., 450. 

 Alabama: Montgomery, R, P. Bur'ke, 52 (in Mo. Bot. Gard. 



Herb., 9558). 

 Louisiana: St. Martinville, A. B, Langlois, 2995, type. 



