188 
ENDOSPOREjE. 
[arcykia. 
4. A. punicea Pers., in Romer, N. Mag. Bot., i., p. 90 (1794). 
Plasmodium white, iu rotten wood. Total height 2 to 3 mm. 
Sporangia ovoid or subcylindrical, stipitate, ci-owded or gregarious, 
0-9 to 1*8 mm. high, 0-8 to 1 mm. broad, crimson; cup of 
sporangixxm-wall membranous, firm, shining, plaited, smooth or 
marked with faint broken reticulations on the inner side. Stalk 
cylindrical, 0-5 to 1 mm. high, O'l mm, thick, furrowed, red-brown, 
filled with spore-like cells. Oapillitium a regular elastic network 
of flattened or terete red threads, 3 to 5 /a diam., with thickenings 
in the form of prominent cogs or spines, and half -rings or rings 
arranged in a loose spiral ; with many attachments to the cup, 
and usually without free ends. Spores pale red, nearly smooth, 
but with a few scattered warts, 6 to 8 /x diam. — Rost., Mon., 
p. 268; Cooke, Myx. Brit., p. 69, fig. 197; Blytt, Bidr. K. Norg., 
Sop. iii. (1892), p. 11 ; Macbride, in Bull. Nat. Hist. Iowa, ii., 
p. 123; Mass., Mon., p. 142. Arcyria ve)-nicosa Rost., Mon., 
App., p. 36. 
Plate LXVIII., A. — a. sporangia, x 20; J. capillitiuin and spore, with 
portion of sporangium-wall, x 600 (England). 
The specimen named A. fusca Fr., in Fuckel, Fung. Rhen. 1443 
(B. M. 708), appears to be a weathered but typical form of A. pu7iicea; 
if this gathering is identical with Fries's type, it confirms the opinion 
of Rostafinski, who gives the name as a synonym for A. punicea. 
Hah. On dead wood. Common. — Batheaston, Somerset (B. M, 
254, 269); Epping Forest, Essex (L:B.M.156) ; Lyme Regis, Dorset 
(L:B.M.156); Abbey Wood, Kent (B. M. 1153); Highgate (B. M. 
1149) and Hampstead (B. M. 1150); Glaisdale, Yorkshire (B. M. 
1146) ; France (B. M. 707) ; Germany (B. M. 708) ; Poland f Strassb. 
Herb.) ; Italy (B. M. 705) ; Cape (K. 898) ; Java (K. 1715) ; Borneo 
(L:B.M.156) ; New Zealand (K. 931); New York, U.S.A. (K. 908) ; 
Iowa (B. M. 1029); S. Carolina (B. M. 982); S. Domingo (Paris 
Herb.) ; Cuba (K. 950) ; New Granada (K. 1724) ; French Guiana 
(Paris Herb.) ; Brazil (K. 899). 
5. A. insignis Kalchbr. & Cooke, in Grev., x., p. 143 (1882). 
Plasmodium? Total height 0*5 mm. Sporangia ovoid, stipitate, 
gregarious, 0'3 mm. diam., red ; cup of sporangium-wall delicately 
membranous, plaited, spinulose. Stalk thickened upwards, 
furrowed, 0"2 mm. long, red, filled with spores or spore-hke 
cells. Capillitium a delicate elastic network of almost colourless 
threads, varying in width from 2 to 5 yu., flattened, with thickenings 
in the form of faint transverse bands and short spines arranged 
in a lax spiral, closely and minutely spinulose elsewhere. Spores 
almost colourless, nearly smooth, 6 to 8 diam. — Mass., Mon., 
p. 148. 
Plate LXVIII., A. — c. sporangia, x 20; d. capillitium and spores, with 
portion of sporangium-wall, x 600 (Cape). 
There are two specimens of this form in the Kew Herb., one, the 
type, from the Cape (Kalchbrenner— K. 895), and one marked 'M. 
punicea, Natal " (K. 949). They resemble a minute form of ^. incarnata, 
but the delicate capillitium attached to the cup of the sporangium- wall 
appears to mark it as distinct. 
