Cenangium 303 



Apotheciis sparsis, erumpentibus, primo clausis dein scutellatis, extus 

 furfuraceis, brunneis, 1 mm. diam.; hymenio cremeo; ascis cylindraceis, 8- 

 sporis; sporis ellipsoideis, 8X10^; paraphysibus filiformibus, 2 n diam. 



On leaves of Yucca. 



Type locality: Mesa Yerda, Colorado. 



Distribution: Colorado and California. 



ExsiccATi: Clements, Crypt. Form. Colo. 518. 



A second collection of this species was obtained by the writer 

 and Ellsworth Bethel in 1910. A third collection from Santa 

 Anita Canyon, California was sent to the writer in 1939. This 

 was at first thought to be an undescribed species but it was later 

 found that Clements had distributed it in 1907 under the above 

 name as a new species, without diagnosis. 



9. Cenangium dimorphum Seaver, comb. nov. 

 Dermatea dimorpha Seaver, Mycologia 16: 8. 1924. 



Conidial stage described as consisting of club-shaped or flask- 

 shaped bodies 1-2 mm. high, either occurring separately, or 

 associated with and often fused to the base of the apothecia; 

 pycnidia minute, more or less angular, about 2 /i in diameter. 



Apothecia usually cespitose, sessile, or substipitate, appar- 

 ently erumpent through the outer bark and becoming subsuper- 

 ficial, shallow cup-shaped, with a purplish tint, furfuraceous, the 

 hymenium somewhat darker, reddish, reaching a diameter of 

 1-2 mm. ; asci clavate, reaching a length of 40 jj. and a diameter of 

 4 M, 8-spored; spores usually 1-scriate, ellipsoid, often with two 

 small oil-drops; 2 X 4 ^i; paraphyses very slender. 



On the bark of some undetermined shrub or vine. 



Type locality: Louisenhoj Estate on the island of St. 

 Thomas. 



Distribution: St. Thomas of the Virgin Islands and Porto 

 Rico; also in Venezuela and Brazil. 



Illustrations: Mycologia 16: pi. 2,f. 1-4. 



In addition to the type, one specimen collected in Porto Rico 

 by John Stevenson in February 1914 has been referred to this 

 species, with which it agrees perfectly. Also one specimen 

 collected by Dr. Carlos F. Chardon in Venezuela has been ex- 

 amined. The latter is said to have been collected on some dead 

 Citrus. It was collected on a coffee plantation near San Cristo- 

 bal. One specimen from the Farlow Herbarium collected by 

 Rick in Brazil labeled "Dermatea episphaeria" Schw. is identical 



