64 ENDOSPOEE^. [PHYSARUM. 



43. P. luteolum Peck, in Eep. N. York Mus., xxx., p. 50, PI. ii., 

 figs. 15-18. Sporangia small, closely gregarious, sesale, yellowish 

 incHning to tawny, rupturing irregularly ; flocci abundant, 

 yellowish-white. Spores globose, purplish-brown, 10 /a diam. 



Hah. On the living leaves of Cornus Canadensis L. — Adirondack 

 Mts., N.Y. 



This description suggests a form of P. virescens Ditm. 



44. P. imitans Eacib., in Rozpr., Mat.-Przyr. Akad. Krak., xii., 

 p. 73 (1884), fig. 3 as 6. Sporangia hemispherical, umbilicate, 

 greyish-white, erect or nodding, with the stalk 1 mm. high. 

 Stalk a little longer than the sporangia, rigid, subulate, brownish- 

 black. Columella none. Oapillitium white, abundant, forming 

 an irregular net; nodes sometimes filled with lime, of various 

 shapes. Spores violet, minutely warted, 9*5 to 10 ft. diam. — Sacc, 

 Syll., vol. vii., p. 348. 



Hab. On branches. — Poland. 



Var. flexuosum Eacib., Hedw., vol. xxviii., p. 120. Plasmodio- 

 ^arps vermiform. Oapillitium of the type of P. leucophoBV/m, 

 from which it differs in the distinctly warted spores. 



The spores of P. leucophccum vary in the extent to which they are 

 warted, but are never quite smooth under a magnification of 1200 

 diam. The description of P. imitans applies to that species. 



45. P. chlorinuin Oooke, in Grev., v., p. 101, pi. 86, fig. 10, 

 Sporangia scattered or gregarious, small, sessile, subglobose, 

 greenish-yellow, simple, bursting in a stellate manner. Spores 

 subglobose, black, opaque, 8 to 9 /t diam. 



Hah. On dead wood of Gocos nucifera L. — D^merara. 



In the absence of a type specimen, this description is too brief to 

 he serviceable. 



SPECIES KEPEEKED TO TiLMADOCBE NOT MET WITH IN THE 

 QUOTED COLLECTIONS. 



46. T. anomala Mass., Mon., p. 333. Gregarious; sporangia 

 globose or slightly depressed, minutely umbilicate beneath, white, 

 sprinkled with minute particles of lime ; stem elongated, slender, 

 equal, straight, pale yellow, longitudinally wrinkled, filled with 

 particles of lime, expanding at the base into a minute circular 

 hypothallus. Oapillitium rather dense ; threads everywhere equal, 

 about 3 /i thick, combined to form a loose irregular network. 

 Nodes very rarely slightly incrassated, and containing a few 

 minute, coloiu-less granules of lime; spores globose, dirty lilac, 

 smooth, 10 /A diam. 



Hah. On wood. — Venezuela. 



47. T. cavipes Berk., in Grev., xi., p. 39. Mycehum reticulate, 

 white sporangia, when young, flesh-colour, afterwards brick-red, 



