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to fig. 2, which no doubt is Arcyria cinerea, what also may be
seen°by comparison of this figure with the authentic figure in
Bulliavd’s Hist, des champ., &o., Tab., 447, fig. 3.
This error is to be found in all authors who have cited Tabula
1973 of FI. Dan. I beg to observe that I follow the figure no.
I. of the Tabula and correct the te s t according to this, consequently
for A. cinerea I have cited FI. Dan. Tab. 179o, fig. 2.
Fig. 1 on the Tabula—fig. 2 in the text—Arcyn«, timbrina,
Schum., is hitherto quoted as synonymous with A . pomifornvis.
Both., hut I think they are rather different both m their shape
and in their colour.
On a rotten stump near Copenhagen I have found the above
described Areyria, which throughout harmonizes with the figure
named and with Schumacher’s description of his A. umbrina.
This species I therefore believe to have again found. ^ As may
be seen from the description, A . umbrina is in the thickenings
on the tubes of the capillitium very different from A. pomi-
forinis, and more connected with A. punicea. (Raunkier, in
Myx. Dan.)
From the above it appears that Raunkier considers he has
collected the species intended by Schumacher. I t will be
noted, however, that no type specimens are factors in the
determination, but only figures.
A r c y r i a i n s i g n i a , Kalchb. and Cke.
Sporangia scattered, very minute, not more than 'o mm. high,
cylindric-ovate, rosy cn- vermilion, upper portion falling away,
calyculus minute ; stem half as long as sporangium, similarly
coloured, filled with large, globose, coloured cells which pass
into normal spores at the apex; capillitium dense, protruded
elastically, threads cylindrical, thick-walled, combined into an
irregular network; everywhere densely and equally covered loith
stout, acute spines about 1 g high; spines not connected into a
network at the base; spores globose, smooth, 1 1— 12 g diameter.
Areyria insignis, Kalchbr. and Cke., Grev. x., p. 143; Saco.,
Syll., no. 1475.
On rotten wood. S. Africa.
(Type in Herb., Kew.)
Distinguished amongst the red species by the cylindrical
threads of the capillitium being equally and densely covered
with short spine-like warts or very short bands.
A r c y r i a f u s c a . Fries.
Every part umber-brourn, sometimes with a tinge of olive,
sporangia stipitate, yloftose or very broadly elliptical; basal portion
remaining as a calyculus; stem 3—4 times as long as
sporangium, very thin, equcd, filled with large cells that become
smaller upwards; capillitium protruded elastically, attached to
base of sporangium, the threads passing down between the
cells of the upper portion of the stem, threads round, combined
to form a dense network, with a single row of warts or very shm't
plates arranged in a very open spiral; spores globose, smooth,
7—9 g diameter.
Arcyria fusca. Fries, Gast., p. 17.
Arcyria punicea, Rost., Mon., p. 268; Cke., Myx. Brit., p. 69 ,
Sacc., Syll., vii., 1, no. 1457 (all in part).
Exsicc.—Fuckel, Fung. Rhen., 1443.
(Specimen from Fries in Herb. Berk.)
On wood. Britain (Batheaston); Sweden; Germany.
Gregarious, 3—4 mm. high. Considered by Rostafinski as
synonymous with Arcyria punicea, from which it differs m the
ornamentation of the threads, consisting of spines or short
flattened plates not occupying more than i diameter of thread,
long, thin stem, colour, &c.
A r c y r i a v e r s i c o l o r , Phill.
Sporangia clongato-pyriform or clavate, often attenuated
downwards into a short, thin, weak stem; wall of sporangium
smooth, polished, varying from bright clear yellow to dark olive;
dehiscing irregularly, basal portion persistent; springing^ gregariously
from a well-developed hypothallus ; mass of capillitium
and spores clear yellow to dusky olive; capillitium attached
only to inner surface of stem-like base of sporangium ; forming