Physarum compressum Alb. & Schwein.

Montes, José Rubén, Lado, Carlos, López-Ortiz, Nelly María & Estrada-Torres, Arturo, 2025, Desert Protists unveiled: Myxomycetes (Amoebozoa) diversity in the Mapimí Biosphere Reserve, Chihuahuan Desert’s arid refugia, Phytotaxa 715 (1), pp. 1-31 : 18

publication ID

https://doi.org/10.11646/phytotaxa.715.1.1

persistent identifier

https://treatment.plazi.org/id/487C87B0-FFDA-FE3E-FF16-C19708448EDB

treatment provided by

Felipe

scientific name

Physarum compressum Alb. & Schwein.
status

 

Physarum compressum Alb. & Schwein. View in CoL [1, 0]

Loc 15: On Y sp. leaves, AET11718, 28 October 2007.

a, b, c Physarum dudlianum T. N. Lakh & K. G.Mukerji. [0, 1]

Loc 17: On Cyl cladodes, JRM223, 19 April 2009, (mc, pH = 7.6).

Sporocarps stalked with sporotheca sub-globose to slightly depressed, white, with calcium carbonate scales at the surface. Stalk yellow and translucent at the top, dark and opaque base because of refuse material presence. Capillitium with very large and irregular nodes, non-uniformly distributed, sometimes forming a pseudocolumella, and areas devoid of nodes, with a well-defined net of non-calcareous whitish tubules. Spores globose, 9.5–10.8 diam., finely ornamented, almost smooth, sometimes with groups of warts visible only by SEM.

The Mapimí specimen on Cylindropuntia cladodes matches the original description by Lakhanpal & Mukerji (1981). However, some Mapimí sporocarps do not show the prominent pseudocolumella characteristic of Physarum dudlianum . This is the first record of the species for America and the Neotropics.

Kingdom

Protozoa

Phylum

Mycetozoa

Class

Myxomycetes

Order

Physarales

Family

Physaraceae

Genus

Physarum

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