187 
aiul often compressed and twisted, expanding at tbe base into a minute 
brown hypothallus; capillitium dense, knots of lime white or yellowish, 
very numerous, large, irregularly branched, connected by short thin 
portions, becoming concentrated toicards the base of the sporangium to 
form a columella ; spores globose, lilac-brown, minutely wanted , 7-9 ju 
in diameter. 
Physarum scyplioides, Cke. and Balf., in Rav, Fung Amer. Exs., No. 
480. 
On living leaves, grass, etc. Darien, Ga. (Rav. 2407). (Type in 
Herb. Kew). A fine species, about 1 mm. high, scattered or gregari¬ 
ous, the upper "portion of the sporangium whitish, chalky, with some¬ 
times a suggestion of pink, falling away in patches when mature, and 
leaving the small, thicker, basal portion in the form of an irregular 
shallow cup or disc, which, with the character of the sporangium, sug¬ 
gest a leaning toward the genus Craterium. It is perhaps a mistake to 
issue new species in exsiccati before the specific diagnoses have been 
published. 
8. Tilmadoche gyrocephala, Rost. (Fig. 8.) Sporangia stipitate 
irregularly globose or compressed, variously lobed and lacunose, umbilicate 
below, wall thin, at first frosted with minute greenish yellow granules 
of lime, dehiscing irregularly ; stem equal to or longer than sporangium, 
attenuated upwards, strongly wrinkled longitudinally, expanding down¬ 
wards into an irregular hypothallus, yellow or orange; columella ab¬ 
sent, capillitium well developed, forming a rigid, irregular net-work ; 
swellings small, fusiform, containing yellow granules of lime; spores 
globose, dingy lilac, minutely verruculose 9-12 p in diameter. 
Tilmadoche gyrocephala, (Mont.) Rost. Mon., p. 131; Sacc. Syll., No. 
1248. 
Physarum tSchumacheri , Spr., Rav. Fung. Amer. Exs., No. 4778. 
Didymium gyroceplialum , Mont., Ann. Sci. Nat., Ser. II, Yol. VII, p. 
362; Mont, Syll., No. 1073. 
Cribraria straminiformis , Speg., Fung. Arg., pug. II, No. 109. 
On twigs, leaves, etc., Brazil; Argentine Republic; S. Carolina. 
Scattered or gregarious 1.5 to 2 millimeters high, characterized by the 
gyrose and lacunose sporangium, which, judging from the simple, thin 
stem, is not an aetlialium, as is the case in some species of Trichia, He- 
miarcyria and other genera, where the clustered and fasciculate com¬ 
pound stem proves conclusively the etlialoid nature of the complex 
sporangium. 
Kew, England. 
