The Genus Battarreopsis. 



This genus, very close to the previous in general appearance, is 

 quite different in gleba structure. This is composed of cells filled with 

 spores, somewhat of the nature of a Polysaccum, hut the cells seem 

 to be formed of plates with partitions. The color of the gleba, the 

 general habits of the plant and the spores are similar to those of Bat- 

 tarrea, but there is no capillitium or "annulated cells." 



BATTARREOPSIS ARTIXI (Plate 22). Only one specimen of 

 the plant is known which was found at Alexandria, Egypt, and is pre- 

 served in the museum at Berlin. It grew under abnormal conditions 

 and was probably modified by its surroundings. A full history of the 

 specimen is given on page 194 of Mycological Notes. 



The Genus Chlamydopus. 



This genus seems to me to be very close to Tylostoma and is still 

 included by some authors in that genus.f It differs from Tylostoma 

 in having the peridium seated on the broad apex of the stem ; in Tylos- 

 toma the stem in inserted in a "socket" in the base of the peridium. 

 Besides there is a basidial difference and I think probably a difference 

 in the volva. f 



CHLAMYDOPUS MEYENIANUS (Plate 10). Volva (nor- 

 mally) persisting as a cup at the base of the plant. (Usually absent in 

 herbarium specimens.) Peridium globose, dehiscing by a torn mouth, 

 borne on the broad, concave apex of the stipe. Stem long, tapering to 

 the base, smooth, silicate. Capillitium subhyaline, branched, sparingly 

 septate. Spores subglobose, 6 mic., granulose. 



HISTORY. The plant was originally collected in Peru and described and 

 figured as Tylostoma Meyenianum. Next it was found in New Mexico by 

 Wright and correctly referred by Berkeley. Type specimen from Peru is pre- 

 served at Berlin and Wright's specimens are at Kew and Cambridge. Spegazzini 

 (1899) figured what is unquestionably the same plant as a new genus and "new 

 species," Chlamydopus clavatus, from Buenos Aires. A single specimen is known 

 from Australia and at Kew I have seen a specimen labeled "Battarrea guicidineana." 

 The specimen is very old and the locality is not clearly stated. I am told, 

 however, that it came from the North African desert region. Prof. C. V. Piper 

 has collected Chlamydopus Meyenianus in recent years at Pasco, Washington, 

 and gives an interesting account of its habits. (See Myc. Notes, page 134.) 



SPECIMENS IN OUR COLLECTION. 

 Washington, C. V. Piper. 



t We cite an example of how mycologists differ on such things. Holl6s and 

 Fischer include the genus in Tylostoma. Monsieur Patouillard tells me that in his 

 opinion it should not be classed in the same tribe as the genus Tylostoma. 



t When the life histories of these plants are known I think it will be found 

 that Chlamydopus has a true volva and Tylostoma never. 



