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Physarum penetrale Rex
Life   Amoebozoa   Eumycetozoa   Physaraceae   Physarum

Physarum penetrale
© The Eumycetozoan Project, 2006 · 0
Physarum penetrale

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Physarum penetrale
© The Eumycetozoan Project, 2006 · 0
Physarum penetrale
Physarum penetrale
© The Eumycetozoan Project, 2006 · 0
Physarum penetrale
Overview
Sporocarps stalked, scattered, total height 1-2 mm. Sporothecae ellipsoidal and prolate, varying to pyriform or subglobose, 0.3-0.4 mm diam., erect or nodding, 0.4-0.6 mm high. Peridium thin, translucent, greenish grey to yellowish green, darkened by the underlying spore-mass, sparsely studded with rounded, pale yellow to yellowish grey calcareous scales, either rupturing to the base in 2-4 segments or irregularly. Capillitium dense, persistent, the nodes small, rounded, pale yellow, fading to white. Columella a continuation of the stalk, not calcareous, reaching to about 80% of the height of the sporotheca, acuminate, or enlarged at the tip, orange-brown to dull yellow or pallid. Stalk variable in length, slender, subulate, rugulose, translucent, not calcareous, dull red or orange-brown, often flattened laterally at the base. Spore-mass dark brown. Spores brownish lilac, minuteIy spinulose, the spines aggregated in denser patches in places, 6-7 µm diam. Plasmodium orange-yellow.

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References
  • Rex,G.A. 1891: New American Myxomycetes. Proceedings of the Academy of Natural Science of Philadelphia 43: 389-398.

Acknowledgements
The Eumycetozoan Project -- working to understand the ecology, sytematics and evolution of myxomycetes, dictostelids and protostelids -- the true slime molds.

Sponsored by grants from the National Science Foundation.


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Please send any corrections and comments about this page to John Shadwick
Department of Biological Sciences, University of Arkansas, Fayetteville, AR 72701, USA
email: jshadwi@uark.edu   phone: USA-479-575-7393.

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