HEMITRICHIA 301 



11. Hemitrichia intorta Lister 



Mycetozoa 176. 1894. 

 PL XX, Figs. 547, 548. 



1891. Hemiarcyria intorta Lister, Jour. Bot. 29 : 268, pi. 312, fig. 3. 



Sporangia gregarious, globose-turbinate or pyriform, 0.3-0.7 mm. 

 broad, golden yellow, stipitate; peridium thin, translucent, shining, 

 opening at the summit irregularly, leaving a funnel-shaped receptacle 

 below; stipe dark red-brown, solid, rugulose; capillitium of threads 

 sparingly branched, but looped and doubled upon themselves and 

 constantly intertwisted, orange-yellow, 3-4 fx in diameter, with four 

 spirals, sparingly spinulose, even and regular, the longitudinal striae 

 conspicuous; spores in mass concolorous, under the lens yellow, deli- 

 cately warted, globose, 8-10 ix. 



Outwardly the open sporangium, by the projecting free tips, reminds 

 one of a trichia. The capillitium is like that of H. vesparium, but less 

 rough, and, of course, different in color. 



H. longifila Rex (Proc. Phil. Acad. 1891, 396), heretofore regarded 

 as a synonym of this species, is considered by Mr. Hagelstein to be 

 based upon a poorly developed collection of H. clavata. 



Rare. Ontario, Ohio, Iowa; England, Ceylon. 



12. Hemitrichia leiocarpa {Cooke) Lister 



Mycetozoa 177. 1894. 

 PL XX, Figs. 545, 546. 



1877. Hemiarcyria leiocarpa Cooke, Ann. Lye. Nat. Hist. N. Y. 11 : 405. 

 1884. Lachnobolus rostafinskii Racib., Rozpr. Mat. Przyr. Ak. Krak. 12 : 80. 



Sporangia gregarious, simple, stipitate, subglobose, ovate or obovate, 

 pallid or ochraceous, 0.5-0.7 mm. in diameter; sporangium wall thin, 

 membranous, persistent below; stalk about equal to height of sporan- 

 gium, concolorous, filled with spore-like cells; capillitium forming a 

 loose net, spirals three to five, sinistrorse, thin, prominent, often more 

 or less spiny; spores globose, pale, appearing nearly smooth under a 

 dry objective but under an oil immersion lens seen to be covered with 

 flat, colorless warts, 7-9 /x. 



Cooke's original description gives the spore-size as 12.5-14 /x; Lister 

 says 6-8 fx; those of our specimens are somewhat larger than noted by 

 Lister. The Lister monograph emphasizes the "dextrorse" spirals of 

 the capillitium, apparently meaning sinistrorse as previously defined 

 in this work (p. 277). But the figure given is far from conclusive in 

 this respect. The spirals in our material are somewhat irregular and 



