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Description type:Original description 
Description:Ramaria pseudogracilis Petersen, sp. nov. Text fig. 16.
Holotypus: L - Netherlands, Twickel, 18.x.58, leg. E. Kits van Waveren, ex herb. Donk, L no. 963.243-030.
Fruit bodies up to 6 cm high, slender, repeatedly branched, humicolous. Basal mycelium not extensive, white or whitish, as a thin sheet separable from substrate, ramifying as occasional white rhizomorphic strands up to 2 mm thick. Stipe up to 2 cm long, up to 3 mm thick, slender, single to occasionally cespitose, erect, branching di- or trichotomously, probably concolorous with branches; branches slender, up to 2 mm thick, probably somewhat flattened or lobed in crosssection, erect, open, perhaps some color near "pinkish cinnamon" to "wood brown"; internodes hardly diminishing until apices; axils rounded, usually sterile, the sterile zone usually decurrent by a line; apices delicate, short, very slender, minutely rounded, di- to polychotomous, darker than branches, perhaps near "Army brown" or a deep vinaceous cinnamon color.
In a small troop on deciduous, leathery leaves; The Netherlands.
Macrochemical reactions not recorded.
Hyphae of rhizomorphic strands of two types: a) generative, 2.6-5.9 µm diam, thin-walled, hyaline, conspicuously clamped, inconspicuous in mounts, tightly packed; inflated clamps up to 13.3 µm broad, thin-walled, subspherical to clavate, unornamented, and b) skeletal, 1.5-2.2 µm diam, thickwalled, relatively straight to somewhat gnarled, refringent under phase contrast, abundant. Hyphae of fruit body base all skeletalized generative, 2.2-8.2 µm diam, refringent under phase contrast, gnarled, conspicuously clamped; wall up to 2.2 µm thick. Hyphae of upper branch trama skeletalized generatives, identical to those of fruit body base.
Spores (text fig. 16) 8.1-10.4 x 4.4-5.2 µm (E = 1.57-2.00; Em = 1.91; Lm = 9.16 µm), elongate-ovoid to elongate-ellipsoid, minutely roughened in profile; contents apparently homogeneous to scattered, minutely multiguttulate; wall up to 0.3 µm thick; apiculus eccentric, not prominent, leaving no throat; ornamentation usually indiscernable, occasionally seen as very small, low warts in lines or adaxial spirals.
Observations: From what I can conclude, fruit bodies of this taxon are humicolous, not lignicolous. Characters which separate it from other taxa are as follows: a) humicolous, b) skeletals in rhizomorphic strands but not in fruit body; c) large spores, and d) probably dark cinnamon coloration (no color notes in the specimens), e) ornamentation pattern.
There is a separate spore population on one fruit body made up of virtually smooth, smaller spores than those of the specimen - probably contamination.
I have seen a single specimen from North America (Ohio, Cooke no. 41643) which closely resembles R. pseudogracilis in stature and microscopic characters. It was reported as fruiting on bare soil. With only a solitary specimen, and such a disjunct distribution, I am loath to include this taxon in the North American flora, but additional collecting may verify its presence here.
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