190 ENDOSPORE.E. [ARCYRIA. 



Plate LXX., A. a. sporangium with expanded capillitium, x 20 ; b. 

 capillitium of upper part, x 600 ; c. capillitium of lower part, x GOO ; 

 (L spore, x GOO (Ceylon) ; e. sporangia, x 20 ; /. capillitium of upper part, 

 x 600 ; g. capillitium of lower part, x 600 (Iowa). 



This species has been principally recorded from the United States, 

 and is well described by Prof. Macbride ; the faint spiral bands on 

 the threads are either distinct or absent in different parts of the same 

 capillitium, and their presence is not a sufficient character to remove 

 the species from the genus Arcyria, with which it agrees in all other 

 respects. Two gatherings of A. stipata have been obtained from 

 India ; one from Nepaul (K. 951), and one from Ceylon (B. M. 709). 

 Both are marked A. punicca ; the first is orange-red, the other bright 

 scarlet ; in both the capillitium forms a net of freely branching 

 sinuous threads, with a border of closely-set blunt cogs ; in some parts 

 the thickenings consist of scattered spines, and towards the cup many 

 of the threads are nearly smooth ; throughout the network the 

 characteristic spiral markings are more or less present, but indistinct 

 in the specimen from Nepaul ; there are many attachments to the cup, 

 and numerous free ends. 



Hob. On dead wood. Ceylon (B. M. 709) ; Nepaul (K. 951) ; 

 Mass. U.S. (L:B.M.159) ; Philadelphia (B. M. 950) ; Iowa (L:B.M.159). 



8. A. flava Pers., in Romer, N. Mag. Bot., i., p. 90 (1794). 

 Plasmodium watery-white, in rotten wood. Sporangia cylindrical, 

 stipitate, clustered, 1*5 to 2 mm. high, 0'3 to - 5 rnm. broad; 

 ochraceous-yellow or pale buff. Cup of sporangium-wall mem- 

 branous, flaccid, reticulated and often spinulose on the inner 

 side, interruptedly plicate. Stalk short, or elongated and weak, 

 filled with spore-like cells, buff. Capillitium a very elastic 

 network of pale yellow, terete or flattened threads, 3 to 4 //, 

 diam., expanding into a drooping column 8 to 12 rnrn. in length, 

 free from the cup, or with few attachments ; thickenings on the 

 threads in the form of sharp spines and half-rings arranged in 

 a loose spiral, and of scattered spinules and short lines of broken 

 reticulation ; free ends more or less numerous, with clavate tips. 

 Spores pale yellow, nearly smooth, marked with a few scattered 

 warts, 6 to 8 //, diam. Trichia nutans Bull., Champ., p. 122, t. 

 502, f. 3 (1791). Arcyria nutans Grev., M. Edin., p. 455 (1824) ; 

 Host., Mon., p. 277 ; Cooke, Myx. Brit., p. 72 ; Blytt, Bidr. K. 

 Norg., Sop. iii. (1892), p. 11; Macbride, in Bull. Nat. Hist. 

 Iowa, ii., p. 125; Mass., Mon., p. 150. 



Plate LXIX., A. a. empty sporangia seated on a common hypothallus, 

 with expanded capillitium, x 20 ; b. capillitium, with portion of the cup of 

 the sporangium, and spore, x 600 (England). 



Hob. On dead wood. Lyme Regis, Dorset (L:B.M.160) ; Leytou- 

 stone, Essex (L:B.M.160) ; Kent (B. M. 1151) ; Camden Town, 

 London (B. M. 1152) ; Batheaston, Somerset (B. M. 289); Leicester 

 (B. M. 284) ; Boynton, Yorkshire (B. M. 1148) ; France (B. M. 970) ; 

 Germany (B. M. 722); Poland (Strassb. Herb.); Iowa (L:B.M.160) ; 

 S. Carolina (B. M. 969). 



9. A. (Erstedtii Host., Mon., p. 278 (1875). Plasmodium 

 watery-white, in hard wood of fir, etc. Sporangia cylindrical, 



