comatricha] stemonitaceae 157 



var. tenerrima— Cornwall ? (B.M. 217); Devon (B.M. 2612); France 

 (B.M. 2613) ; Japan (B.M. 2614) ; Antigua (B.M. 1675) ; Philadelphia 

 (B.M. slide) ; South Carolina (B.M. 904b) ; Brazil (B.M. 2615) : var. 

 gracilis— Vienna (B.M. 1831); Ceylon (B.M. 2616); Cameroons, West 

 Africa (B.M. 2618) ; Japan (B.M. 2617) ; Philadelphia (B.M. 1884). 



7. C. rubens Lister Mycetozoa, 123 (1894). Plasmodium 

 watery- white. Total height 1 to 2 mm. Sporangia scattered, 

 obovoid, ellipsoid, or subglobose, stalked, erect or inclined, 

 0-5 to 0-8 mm. long, 0-3 to 0-5 broad, pinkish-brown, shining 

 below ; sporangium- wall evanescent above, membranous and 

 persistent in the lower quarter, pinkish-brown. Stalk setaceous, 

 black, sliming, 0-6 to 1-3 mm. long, rising from a circular 

 brown hypothallus. Columella reaching to about two-thirds 

 the height of the sporangium, branching at the apex. Capilli- 

 tium of violet-brown threads, springing from all parts of the 

 columella, broad at the base, more or less flexuose, anastomos- 

 ing and branching at wide angles, often with flat expansions, 

 gradually narrowing to the slender straight free ends ; the 

 persistent base of the sporangium-wall is connected with 

 the lower part of the columella by capillitium threads with 

 broad attachments. Spores pale lilac-brown, minutely 

 spinulose, 7 to 8 /x diam. — Torrend Fl. Myx., 138. 



PI. 127. — d. sporangia (England) ; e. columella and capillitium, with the per 

 sistent base of the sporangium-wall ; /. spore. 



Closely allied to C. pulchella, but differing in shape, in the branching 

 of the capillitium, and in the persistent base of the sporangium-wall, 

 a character showing an approach to the genus Lamproderma. 



Hob. On dead leaves. — Lyme Regis, Dorset (B.M. 1400) ; Witley, 

 Surrey (B.M. 2622) ; Epping Forest, Essex (B.M. 2623) ; Flitwick, 

 Beds '(B.M. 2621); Bulmer, Yorks (B.M. 2620); Philadelphia (B.M. 

 slide). 



8. C. typhoides Rost. Versuch, 7 (1873). Plasmodium 

 watery- white. Total height 2 to 3 mm. Sporangia gregarious, 

 stalked, cylindrical, obtuse, at first silvery-grey from the 

 presence of the soon evanescent wall, then lilac-brown, 1*5 to 

 2-3 mm. long, 05 mm. broad. Stalk black, clothed with the 

 silvery membranous continuation of the sporangium- wall, 

 0-5 to 1-3 mm. long, 0-06 mm. thick, rising from a well- 

 developed hypothallus. Columella reaching to nearly the 

 summit of the sporangium, branching at the apex. Capillitium 

 a close network of flexuose, pale brown threads, springing from 

 aU parts of the columella, the ultimate branches more slender, 

 free, or forming an uneven net in the lower half. Spores pale 

 lilac-brown, marked with 3 to 5 prominent warts or clusters of 

 minute warts on the hemisphere, otherwise almost smooth or 

 very minutely warted, 6 to 7 /x diam. — Trichia typhoides Bull. 

 Champ.. 119, t. 477, f. 2(1791). Stemonitis typhina Wiggers 



