Two Species of the Genus Calostoma. 



247 



the srecies C. cinnabarinum. The confusion which this unfortu- 

 nat( i^ produced was subsequently corrected by Burnap * who 

 cka:i- pointed out diflerences between these two species suffi- 

 citj.i to estabhsh their identity. Chief ai .ong these difierences 

 at> i..;ited out lelow, is the size of the plant and the nature of 

 tli<- lootstalk. 



■ nring the last two years the writer has been interested 

 t< these two species growing in the vicinity of Blacksburg, 



\ he specii .ens illustrate the s] tcific difierences so well that 



attention niaA' be here calkd to thfr.. C. cinnabarinum was 



Fig. 1. Calostoma cinnabarinum. Desv. (for size of plants see table) 



collected Nove:.nber 7, 1908, in a ravine on Brush Mountain. 

 At that tin-.e the plants were .rature and the notes could not be 

 obtained upon the character of the volva. C. lutescens was col- 

 lected April 13, 1910 in moist woods by Mr. H. vS. Stahl of the 

 Department of Biology. The following table shows the average 

 size of the plants as detennined from the specinens collected. 



AVERAGE MEASUREMENTS OF SPECIMENS OF C. CINNABARINUM 

 AND G. LUTESCENS. 



C. cinnabarinum. 



C. lutescens. 



Height of 

 entire plant 



footstalk 



68 mm. 



mm. 



84 mm. 



68 mm. 



I I' 



Diameter I Diameter Size of spores 



of footstalk of peridium diameter 



24 mm. 



13 mm. 



mm. 6-7 x 14-15 

 microns 



15.5mm. 



7-8 micrijiis 



•Bot. Gazette. Vol. XXIII. p. 180. 1897. 



