Comprehensive Description

provided by North American Flora
Arcyria denudata (I,.) Wettst. Verh. Zool.-Bot. Ges
Wien35: Abh. 535. 1886.
Clalhrus denudalus L. Sp. PI. 1179. 1753.
Mucor Clathroides Scop. Fl. Carn. ed. 2. 2: 493. 1772.
Embolus crocatus Batsch, Elench. Fung. Contin. 1: 265. 1786. Trichia denudata Vill. Hist. PI. Dauph. 3: 1060. 1789. Trichia graniformis Hoffm. Veg. Crypt. 2: 3. 1790. Trichia cinnabaris Bull. Hist. Champ. Fr. 121. 1791. Stcmonitis crocea J. F. Gmel. Syst. Nat. 2: 1467. 1791. Trichia rufa With, Brit. PI. ed. 2. 3: 478. 1792. Arcyria punicea Pers. Neues Mag. Bot. 1: 90. 1794. Arcyria conjugata Schum. Enum. PI. Saell. 2: 215. 1803. Stcmonitis denudata Relhan, Fl. Cantabr. ed. 3. 574. 1820. Arcyria vernicosa Rost. Monog. Append, 36. 1876.
Sporangia crowded or gregarious, stalked, ovoid or short-cylindric, tapering upward, 2-3 mm. tall, pompeian red to brick-red, weathering to brown; peridium evanescent except for the plicate caly cuius; stalk dark or concolorous, striate, ascending from a small hypothallus, 0.5-1.5 mm. long; capillitium elastic, usually erect, bright red or carmine, fading to brown, the threads 3-4 & in diameter, marked with a series of rather distant cogs or half-rings arranged spirally
around the axis, attached to the whole inner surface of the calyculus, hence not deciduous; spores red or reddish-brown in mass, colorless by transmitted light, with a few scattered warts, 6-8 fi in diameter; Plasmodium white.
Type ujcauty: Italy. Habitat: Dead wood.
Distribution: Throughout North America; cosmopolitan.
bibliographic citation
George Willard Martin, Harold William Rickett. 1949. FUNGI; MYXOMYCETES; CERATIOMYXALES, LICEALES, TEICHIALES, STEMONITALES, PHYSARALES. North American flora. vol 1. New York Botanical Garden, New York, NY
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