Arcyria stipata (Schwein.) Lister

Lister 1894: A Monograph of the Mycetozoa, p. 189
Basionym: Leangium stipatum Schwein. 1832: Trans. Amer. Philos. Soc., new ser. 4(2): 258
Type loc.: USA, Pennsylvania, Bethlehem.

Fructification
Sporocarps gathered in dense groups up to ca. 1 x 1 cm., ± cylindrical and othen interwinded, up to ca. mm high, shortly stipitate, brownish rose to copper coloured.

Stalk
up to 1 mm long, dark brown, filled with spore-like cells.

Peridium
leaving a funnel-shaped cup, which is shining reddish brown and radially furrowed, on the inner side with low, irregular warts.

Capillitium
forming a net of 3-6 µm broad tubules, only attached at the base of the cup, ornamented with low often rather coarse lists and warts which usually form a spiral pattern.

Spores
spherical, almost smooth or with very delicate warts (oilimmersion) and scattered more prominent warts, brownish rose in RL, pale yellow to almost colourless in TL, 6.7-7.3-8.2 µm in diam.

Ecology
Rotten wood of beech (Fagus sylvatica).

Distribution in Denmark
Occasional. Approxinately 10 collections known.

Global distribution
Known from Europe, Russia, Ceylon, northern India, Nepal, Japan, USA and Canada.

Discription
Description and discussion based on Albertsen & Gøtzsche (1993).

 


Abbreviations: TL : transmitted light; RL : reflected light; Ø : diameter; TBU : Danish Botanical Topographical District.

Colour-codes refer to: Kornerup, A. & J. H. Wanscher 1974: Farver i farver. 5th reprint. Politikens Forlag, Copenhagen.

When not otherwise indicated spore measurements are given as: min-mean-max or (extreme-)min-mean-max(-extreme). Spore measurements are exclusive of ornamentation.

Line drawings are free hand sketches.

Distribution maps: Maps of Danish distributions are based on material seen by the author. World distributions are based on reports extracted from literature.