186 



Mycologia 



Ascomata solitaria, exsiccata 1.5-2.5 cm. alta ; clavula obovata ; 

 stipes teres, 1-2 cm. longa, 1— 1.5 mm. crassa, hirsuta ; cystidia 

 acicularia ascos parve superantia. Asci clavati, apice rotundati, 

 175X12/*; sporidia 8, multiseriata, cylindraeeo-clavata, fuligi- 

 nea, primum 3- demum 7-septata, 55-73X4-5/* (plurima 60- 

 68 ft-)-; paraphyses pallide bruhneae, sursum leniter incrassatae, 

 rectae vel curvatae. 



Ad terram, Blowing Rock, N. Car., 1901, Durand n. 1934. 



In the Monograph, p. 439, this collection was referred with 

 some hesitation to Geoglossum Rehmianum P. Henn., a Brazilian 

 species of which no authentic specimens had been seen, so that 

 the determination was on the basis of description only. More re- 

 cently, however, through the courtesy of Dr. G. Lindau, the 

 writer has been able to examine a portion of the original type of 

 G. Rehmianum from St. Catharina, Brazil (Ule n. 1564), and 

 thus to settle its relationship to the Carolinian plant. In the 

 Brazilian plant the spores are nearly cylindrical, are narrowed 

 toward the lower end only, and measure 78-103 X 5 /* (the ma- 

 jority 90-95/*), instead of 60-65/* as indicated in the original 

 description. The paraphyses are brownish above, and somewhat 

 thickened and curved as in the other members of the genus. The 

 plant from North Carolina is different, the spores being shorter, 

 55—73 /* (majority 60-68/*), and distinctly clavate and narrowed 

 both above and below the middle. 



A careful study and comparison of authentic specimens has 

 led to the conclusion that G. Rehmianum P. Henn. is specifically 

 identical with Trichoglossum Walteri (Berk.) Durand, a species 

 originally described from Australia, but known to occur in ten of 

 the eastern United States. The plant from Carolina represents 

 an undescribed species differing from T. Farlowi in having the 

 spores 7-septate at maturity. 



To those who would regard T. confusum as a 7-septate form 

 of T. Farlowi it may be stated that examination of more than 

 forty collections of the latter from twelve states has failed to dis- 

 close a single 7-septate spore. In T. confusum the majority are 

 7-septate, those with a lesser number being plainly immature. 



