Alwisia morula G. Moreno, Leontyev, D.W. Mitch., S.L. Stephenson, C. Rojas & Schnittler, 2014

Lloyd, Sarah J., Leontyev, Dmytro, Vigus, Paula & Schnittler, Martin, 2024, Repent for Alwisia repens: emended descriptions of two species of Alwisia (Myxomycetes) thought to lack a capillitium, Phytotaxa 634 (3), pp. 289-300 : 295-296

publication ID

https://doi.org/ 10.11646/phytotaxa.634.3.7

DOI

https://doi.org/10.5281/zenodo.14204155

persistent identifier

https://treatment.plazi.org/id/03875C39-DC64-FFE4-FF47-04C7ECEEF5C2

treatment provided by

Felipe

scientific name

Alwisia morula G. Moreno, Leontyev, D.W. Mitch., S.L. Stephenson, C. Rojas & Schnittler
status

 

Alwisia morula G. Moreno, Leontyev, D.W. Mitch., S.L. Stephenson, C. Rojas & Schnittler View in CoL , in Leontyev, Schnittler, Moreno, Stephenson, Mitchell & Rojas, Mycologia 106(5):939 (2014) emend. Lloyd, Leontyev, Vigus & Schnittler Fig. 5 View FIGURE 5 .

Fructifications composed of several hundred separate sporocarps up to 3 mm high, these stalked or nearly sessile, gathered in compact groups which stretch over 10 cm and may attain 5–8 mm high, since sporocarps are densely crowded and may develop over each other ( Fig. 5A View FIGURE 5 ). Hypothallus well developed, membranous, reddish brown to dark brown, common for a group of sporocarps, forming erect tapered projections, these gradually turning into stalks. Stalks sinuous, reddish brown, dark brown at the base, 1–4 mm long, forming a weave under a continuous layer of sporothecae; thin, flexuous, irregularly gyrose, occasionally branching at an acute angle ( Fig. 5I View FIGURE 5 ). Sporothecae ochraceous with brownish, golden or olivaceous tints, 0.8–1.3 mm long, 0.6–1.2 mm diam, conspicuously varying in size within one fruiting ( Fig. 5A View FIGURE 5 ), inversely droplet-shaped to obovoid or almost globose; mostly free but sometimes attached to each other at the widest part. Basal part of the peridium ochraceous-brown, membranous, glossy, somewhat plicate ( Fig. 5B View FIGURE 5 ). Upper part of the peridium light beige-ochraceous, nearly fugacious, forming rounded, iridescent platelets surrounded by dull, non-differentiated areas ( Figs. 5C–D View FIGURE 5 ); this part of peridium may resemble a slice of porous Swiss cheese, being covered with hemispherical pits, grooves and openings, connecting with the internal contents of the capillitium ( Fig. 5E View FIGURE 5 ). The surface of the peridium may have longitudinal grooves, presumably representing residual capillitium elements ( Fig. 5B View FIGURE 5 ). Capillitium vestigial, occurring in 5–10% of sporothecae, represented by smooth, redbrown, cylindrical tubes with uneven surface, wide at the upper part, gradually tapering to the base of the sporotheca, nearly non-branching, forming narrowing free ends ( Fig. 5H View FIGURE 5 ) or reaching the base of sporotheca ( Figs. 5F, G View FIGURE 5 ); visible from the outside as holes ( Figs. 5C–E View FIGURE 5 ) and longitudinal grooves ( Fig. 5B View FIGURE 5 ) on the peridium. Spore mass light brownish ochraceous. Spores light brownish in transmitted light, (5.9–)6.2–6.8(–7.1) mm diam, banded-reticulate, with a smooth area. Plasmodium not observed.

Material examined. COSTA RICA, SAN JOSÉ, Dota canyón , Jardín de Dota, environs of Santa María Dota, ca. 2150 m a.s.l. Mountain forest, dead wood with mosses, 9.71250N, 83.97639W, 11 Nov 1998, leg. Alejandro Jiménez GoogleMaps (see Supplementary file 1).

Habitat and distribution. Known from Costa Rica, where it occurs on dead wood of coniferous and broad-leaf trees.

Kingdom

Protozoa

Phylum

Mycetozoa

Class

Myxomycetes

Order

Cribrariales

Family

Tubiferaceae

Genus

Alwisia

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