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Comprehensive Description

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Prototrichia metallica (Berk.) Massee, Jour. Roy. Micr
Soc. 1889:350. 1889.
Trichia metallica Berk, in Hook. f. Fl. Tasm. 2: 268. 1859.
Trichia fiagellifer Berk. & Br. Ann. Mag. Nat. Hist. III. 18: 56. 1866.
Prototrichia fiagellifer Rost. Monog. Append. 38. 1876.
Prototrichia elegantula Rost. Monog. Append. 39. 1876.
Prototrichia cuprea Massee, Jour. Roy. Micr. Soc. 1889: 351. 1889.
Prototrichia chamaeleontina Massee, Monog. 130. 1892.
Prototrichia Schrbteri Meylan, Bull. Soc. Vaud. Sci. Nat. 53: 462. 1921.
Sporangiate, sessile or short-stalked, rarely subplasmodiocarpous, 0.5-2 mm. in diameter, orange-brown to dull brown, sometimes rosaceous; peridium thin, transparent, iridescent, bearing on its inner surface the persistent ends of the capillitial threads ; capillitium of numerous brown, spirally banded threads, originating at the base and becoming subdivided as they ascend, the branches often spirally interwoven, sometimes anastomosing to form a network at the bases and tips, the extremities attached to the upper wall; spores orange-brown to brown in mass, pallid or pinkish by transmitted light, spiny, 10-13 (15) p in diameter; Plasmodium white.
Type locality: Tasmania.
Habitat: Dead wood and bark, usually of conifers.
Distribution :, Nortl^ Carolina; Alberta to Washington, Colorado, and California; Kurope;
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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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Prototrichia metallica

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Prototrichia metallica is a slime mould species from the order Trichiida and the only species from the genus Prototrichia. It is mainly distributed on mountains.

Characteristics

Prototrichia metallica is a very variable species. The plasmodium is white. The fruit bodies are grouped densely.[1] They are orange brown to dull brown, occasionally pink, short stemmed or are lying on a heavily regenerated edge, rarely plasmodiokarp sporokarps with a diameter from 0.5 to 2.2 mm. The membranous peridium is transparently thin and shinily iridescent-coloured. Its surface is composed of a coarse mesh arrangement of wrinkled lines, along which it later divides into pieces.[1][2]

The capillitium is often irregular, usually due to the presence of several yellow-brown, translucent spirally banded strands, which divide towards the outer end. The branches are often intertwined spirals, which sometimes form a network. Many of the outer ends are fused with the upper part of the peridium wall. The spirals are occasionally missing. The thorny spores are pink as mass,[1] orange-brown to brown, individually yellow and have a diameter from 10 to 13, rarely up to 15 µm.[2]

Habitat

Prototrichia metallica has been found in mountainous area of Tasmania, Europe, western North America and South America. It was first found in South America in 1976. It is a "nivicol", meaning that it grows on the snow line at the time of snowmelt.[1][3]

Classification

The species was first described in 1859 as Trichia metallica by Miles Joseph Berkeley and the genus in 1876 by Joszef Tomasz Rostafinski.[2] Prototrichia was for a long time classified in Dianemidae, periodically even as a separate family of Prototrichiaceae. Since the end of the 1960s, it was asserted that this species is part of Trichiidae. Charles Meylan described in 1921 a further species, Prototrichia schroeteri, and the name is usually the synonym. Nowotny, however, believes that it is a separate species.[1][4]

References

  1. ^ a b c d e (in German) Wolfgang Nowotny: Beiträge zur Kenntnis der Myxomyceten Oberösterreichs V In: Linzer biologische Beiträge, 22:1, pp.100-102, 1990
  2. ^ a b c David W. Mitchell: World inventory of myxomycete species - Descriptions and taxonomic references., 2010 edition, DVD
  3. ^ Marie L. Farr: Myxomycetes, New York Botanical Garden, 1976, pp.58-59
  4. ^ Donald T. Kowalski: Observations on the Dianemaceae In: Mycologia, volume.59:6, pp.1075-1084, 1967
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Prototrichia metallica: Brief Summary

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Prototrichia metallica is a slime mould species from the order Trichiida and the only species from the genus Prototrichia. It is mainly distributed on mountains.

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