[Vol. 13 

 198 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



Illinois: Helleydayboro, C. J. Humphrey, 1351 (in Mo. Bot. 



Gard. Herb., 59017) ; Port Byron, E. T. & S. A. Harper, 733. 

 British Columbia: Kootenai Mts., Salmo, /. R. Weir, 456 (in 



Mo. Bot. Gard. Herb., 13043); Sidney, /. Macoun, 11 (in Mo. 



Bot. Gard. Herb., 5729). 

 Washington: Bingen, W. N. Suksdorf, 879, 919. 

 Arizona: Flagstaff, W. H. Long, 19491 (in Mo. Bot. Gard. Herb., 



44738, 55135); First Valley Experiment Station, W. H. Long, 



21119 (in Mo. Bot. Gard. Herb., 55136). 

 Mexico: Chihuahua, Parral, E. 0. Mathews, 2, 26 (in Mo. Bot. 



Gard. Herb., 44126, 44125) ; Guernavaca, W. A. & E. L. Mur- 



rill, 418, comm. by N. Y. Bot. Gard. Herb, (in Mo. Bot. 



Gard. Herb. 54512). 

 Bermuda: on cornstalks, S. Brown, N. L. Britton & F. J. Seaver, 

 \248 (in N. Y. Bot. Gard. Herb, and Mo. Bot. Gard. Herb., 



^4809). 



16. C. Auberianum Montagne in La Sagra, Hist, de Cuba 9 2 : 

 226. 1845; Syll. Crypt. 178. 1856; Sacc. Syll. Fung. 6: 616. 

 1888; Massee, Linn. Soc. Bot. Jour. 27: 135. 1890. 



Type: part of type in Kew Herb. 



Fructifications effused, orbicular at first, becoming longitu- 

 dinally elongated, adnate, very thin, white, floccose-farinaceous, 

 even, sometimes somewhat cracked, the margin thinning out, 

 floccose; in section 45-120 y. thick, not colored, composed of sub- 

 erect, branching, interwoven, thin-walled hyphae about 2 \i in 

 diameter, not nodose-septate; no gloeocystidia ; no cystidia; 

 spores hyaline, even, flattened on one side, 4-5 X 2-3 [i. 



Fructifications at first 2-10 mm. in diameter, finally up to 10 

 cm. long, 1 cm. broad. 



On small decaying, fallen twigs of frondose species. Vermont 

 to Louisiana, and in the West Indies. August to March. Rare. 



C. Auberianum may be recognized by its very thin, snow-white 

 fructifications having a farinose hymenial surface, small spores, 

 and slender, thin-walled hyphae throughout. No gloeocystidia 

 are present nor coarse hyphae near substratum. The occurrence 

 of several small fructifications near together when young is 

 characteristic. The hyphae are probably somewhat incrusted, 

 but this needs confirmation. 



