CHONDRIODERMA.] PHYSARACE^. 85 



13. C. floriforme Rost,, Mon., p. 184 (1875). Plasmodium 

 greyish-white. Total height 1 to 2 mm. Sporangia globose, 

 stipitate, erect, smooth, crowded, 0*8 mm. diam., varying from 

 white to ochraceous-brown; sporangium -wall splitting into several 

 revolute petal-like lobes, ochraceous-brown on the inner side, 

 cartilaginous, obscurely granular, with an inseparable mem- 

 branous inner layer. Stalk equal, furrowed, 0'5 to 1 mm. long, 

 O15 nim. thick, ochraceous-brown, rising from a strongly developed 

 common hypothallus. Columella ovoid or hemispherical, brown, 

 densely calcareous. Capillitium of slender, sparingly branching 

 threads, with scattered bead-like thickenings, thicker and anasto- 

 mosing at the base, dark violet-brown. Spores red violet-brown, 

 with wielely separated obtuse warts, 9 to 11 p. diam. Cooke, Myx. 

 Brit., p. 41 ; Mass., Mon., p. 198; Mac-bride, in Bull. Nat. Hist. 

 loAva, ii., p. 149. Spha&ocarpus floriformis Bull., Champ., p. 142, 

 t. 371 (1791). Diderma floriforme Pers., in Rom., N. Mag. Bot., 

 i., p. 89 (1794). Leangiumflorijorme Link, in Berlin Ges. Nat. Fr. 

 Mag., iii.,p. 26; Rost., in Fuckel, Symb. Myc., Nachtr. 2, p. 73. 



Plate XXXIV., B. a. sporangia moist and un expanded, x 20; b. sporangia 

 dry and expanded, x 20 ; c. capillitium and spores, x 280 ; d. spore, x 61)0 

 (England) ; e. sporangia expanded and showing clavate columellae. x 20 

 (United States). 



The red-brown spores with scattered warts distinguish this species 

 from all forms of C. radiatum. 



Nab. In crevices at the base of oak stumps, etc. Epping Forest, 

 Essex (L:B.M.G4) ; Germany (B. M. 533) : Ohio (L:B.M.64) ; Iowa 

 (B. M. 817) ; S. Carolina (B. M. 925). 



14. C. Hookeri Lister. Plasmodium? Sporangia subglobose, 

 stipitate, erect, gregarious, 1 mm. diam., rufous with a slight 

 iridescent lustre ; sporangium- wall of two layers, the outer car- 

 tilaginous, purplish-brown, closely combined with the colourless 

 inner layer. Stalk equal from a broader base, furrowed, O7 mm. 

 high, purplish-brown, densely charged with lime. Columella 

 cylindrical, obtuse, rugose with the expanded bases of the capilli- 

 tium, O4 mm. high, O17 mm. thick, purplish -brown, densely 

 charged with lime. Capillitium of lax branching anel anastomosing 

 threads, nearly equal in breadth throughout, 2 /x, diam., colourless 

 or pale violet. Spores dark purple-brown, spinose, 13 to 15 p 

 diam. Diderma Hookeri Berk., in Fl. Nov. Zel., p. 191 (1855). 

 Lamproderma Hookeri Rost., Mon., App., p. 24. Diachcea 

 Hookeri Mass., Mon.., p. 260. 



Plate XXXV., A. a. remains of sporangia, on fern frond, natural size ; 

 b. stalk and columella, x 20 ; c. capillitium. with portion of columella, 

 containing lime-granules, x 280 ; d. spore, x 600 (New Zealand). 



This is represented by a single gathering, and appears to have been 

 in imperfect preservation when first examined by Berkeley. Rostafmski 

 writes that it was in an injured state when seen by him ; probably it 

 was then in much the same condition as at the present time. The speci- 

 men consists of a considerable number of sporangia on a frond of 

 Hymenophyllum, but little remains beyond the stalks and columellae 



