Tlic IMy.voinycclcs of the Miami Va//t'y, Ohio. 141 



gradually falling away. Stipe and columella thick, erect, 

 rigid, tapering upward, filled with minute, roundish granules 

 of lime, white or yellowish in color. Capillitium arising from 

 numerous points of the columella, the threads repeatedly 

 branching and anastomosing to form an intricate network, 

 attaining the wall by numerous short free extremities. Spores 

 globose, violaceous. 



This genus is scarcely to be distinguished from Lampro- 

 derma, except by the white mass of lime which fills the tube 

 of the stipe and columella. 



1. Di.'VCH.KA LEUCOPOD.V, Bull. Sporangia ovoid-oblong to 

 short cylindric, the base obtuse or slightly umbilicate, the 

 apex more rounded ; the wall with bronze, blue, purple, and 

 violet tints., gradually falling away. Stipe short, thick, white, 

 arising from a white, venulose, hypothallus, tapering upward ; 

 the columella cylindric or slightly tapering, obtuse, termina- 

 ting below the apex of the sporangium. Capillitium of slen- 

 der, flexuous brown threads forming a dense network of 

 rather small meshes. Spores globose, very minutely warted, 

 violaceous, 7-9 mic. in diameter. 



Growing on old leaves, sticks, etc., and sometimes running 

 over living plants. Sporangium with the stipe 1-2 mm. in 

 height, the stipe usually much shorter than the sporangium, 

 the latter .4-. 5 mm. in thickness. Diacha^a elegaus, Fr. 



2. Ui.\CH.KA SPLENDENS, Peck. vSporangia globose, some- 

 times a little depressed, with the base umbilicate ; the wall 

 steel-blue with tints of purple and violet, quite persistent, 

 rupturing irregularly. Stipe short, thick, white, arising from 

 a white, reticulate hypothallus, tapering upward ; the colu- 

 mella oblong or short cylindric, extending beyond the center 

 of the sporangium. Capillitium of slender, brown threads, 

 which branch several times and form a loose network of 

 rather large meshes. Spores subglobose, with very large 

 warts, dark violet, 8-10 mic. in diameter. 



Growing on old leaves and twigs. Sporangium .4-.6 mm. 

 in diameter, the stipe about the same length. This is a beau- 

 tiful species. 



3. DiACH.EA. Thomasii, Rex. Sporangia globose, or some- 

 times a little depressed ; the wall gold-bronze, with tints of 



