Comatricha longipila Nann.

Moreno, G., Castillo, A. & Thüs, H., 2018, Critical revision of type material of Stemonitales (Myxogastria) at the Natural History Museum London (BM), Phytotaxa 344 (2), pp. 149-159 : 150

Comatricha longipila Nann. -Bremek.

Sporocarps stipitate, total height 1.5–2 mm. Sporotheca brown, cylindrical, rarely ovoid. Peridium evanescent. Stalk dark, solid fibrous approximately 1/3 of the total height. Columella reaching almost the apex of the sporotheca.

Capillitium brown, lax, originating along the columella not anastomosing, more or less parallel branches and with free ends, elongated, more or less dichotomous. Spores small, globose, 5.3–8.8 × 5.3–8.6 μm, av. 7.1 × 7 μm, Q av = 1.02 (n = 25), pale to reddish brown by LM, warty. Under SEM the spore ornamentation is formed by thick baculae which are homogeneously distributed ( Figs. 2a–g ).

Figures

FIGURE 2. Comatricha longipila Nann.-Bremek. (type): a. Sporocarp [box: BM001088435], b–c. Capillitium by SEM [stub: BM001247200], d. Details of fibrous stalk, e–g. Spores. Bars: a = 0.1 mm, b, d = 20 μm, c = 10 μm, e–g = 1 μm.