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stem thin, length variable, yellow, often reddish at the base,
filhd with large, globose, or subangular cells, which pass tipwards
into normal spores; mass of spores clear yellow, ochi'aceous-
orange, or tinged with olive ; threads of capillitmm 4—5 g
thick, forked repeatedly and comhined into an irregular open
net, free ends not numerous, obtuse, sometimes slightly swollen,
spirals thin, not prominent, rather distant ; spores globose, very
miniLtely and irregttlarly reticulated, 8— 10 g diameter.
Hemiarcyria c/ctwri«, Rost., Mon., p. 264, figs. 205, 207, 210,
238; Cke., Myx. Brit., p. 68, figs. 205, 207, 210, 238; Sacc.,
Syll., vii., 1, n. 1513; Mass., Mon. Trich., p. 31; Raunk., Myx.
Dan., p. 64; Schroeter, p. 114.
Exdee.—Fckl., F. Rhen., 1434; Jack, Leiner u. Sitzenb.
Krypt. Badens., 621 ; Ellis, N. Amer. Eung., 523.
On decayed wood, c&o. Britain (King’s Cliffe, Apethorpe,
Scarboro’, CarlLsle); France; Germany; Denmark; United
States ; Cuba ; Brazil ; Ceylon ; Bonin Islands.
Scattered or gi-egarious, 1‘5—2 min. high, stem slender, often
attenuated downwards and longitudinally wrinkled, sometimes
very short, especially when the sporangium is almost globose.
The spores are usually covered with very thin, slightly raised
ridges combined into a very fine, irregular network, but the
ridges are sometimes short and distinct or even wart-like.
(Rostafinski’s Synonyms.)
Clathruspedatus, Schm. Ic., t. 33, f. 1, 17 (1776).
Sphaeroearpus pyriformis. Bull., t. 417, f. 2 (1791).
Stemonitis pyriformis, Gmel. Sys., 1469 (1791).
Trichia pyriformis, Sibth. FL Ox,, 406 (1794); Sow., 400, f. 6.
Trichia clavata, Pers. Disp., p. 11 (1797); Eng. FL, v., 320 ;
Cooke, Hdbk,, 1183.
Trichia eitrina, Schum. Saell., 1460 (1803).
Arcyria trichioides, Rudolph, Linnaea, p. 120 (1829).
Trichia erythropus, Borszczow (1856).
Trichia oUusa, Wigand, p 30, t. 1 1 , f. 4 (1863).
Trichia Thwaitesii, B. and Br., Ceylon Fung., No. 776 (1873).
§ § § Spores smooth.
Arcyrio leiocarpa, Mass.
Sporangia scattered or aggregated, obovate or pyriform, rarely
almost globose, pallid, stem same colour, as long as diameter
o f sporangium ; mass of capillitium and spores concolorous, or
with a slight ochraceous tin t; eapillitium sparse,forming a loose
net, threads 5 g thick, sgnrcds thin, rather close, slightly prominent
on the convex side of the bent threads, usually furnished
with scattered, rudimentary spinules, free tips very rare or
absent; spores globose, smooth, 12—14 g diameter.
Hemiarcyria leiocarpa, Cooke, Myx., U. States, in Ann. Syc.
Nat. Hist., New York, xL, n. 12, p. 405 ; Cooke, Myx. Brit.,
figs. 252, 255; Saoc., Syll., vii., 1, n. 1519; Mass., Rev. Trich.,
p°353, fig. 33.
In Saocardo’s Sylloge VII., pt. I., p. 440, n. 1519, Rostafinski
is given as the author of the present species, and the reader is
referred to “ Rost., Mon., p. 267” for the description, hut in
reality the present species is not included in Rostafinski s work.
Arcyria leocarpoides, Mass.
Sporangia globose or pyriform, 0'6—0’8 mm. diameter, flesh-
red or fulvous, often depressed and deeper coloured at the apex,
not at all or only a little shining, very smooth, cortex rather
thick, subcartilaginous, soon breaking away in pieces above,
usually persistent, oup-like at the base ; stem rather rigid, erect,
brownish or blackish, slender, even or subrugulose, about as
long as diameter of sporangium; capillitium after dehiscence
protruding elastically, attached at the base, very persistent,
brownish-fulvous,, or olive-fulvous, threads slender, cylindrical,
5— 6 g thick, forming a dense net with numérotes terete, abruptly
rounded free arms, threads loith 3—4 spirals, very smooth, not
papillate ; spores globose, 8— 10 g diameter, very smooth, protoplasm
granular, fulvous-olive.
Cornuvia leocarpoides, Speg., Fung. Arg. Pug. I., n. 264; Sacc.,
Syll., vii., 1, 11. 1546.
On rotten wood. Brazil.