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 Add this item to the list  Ramaria grundii Petersen, sp. nov.
Description type:Original description 
Description:Ramaria grundii Petersen, sp. nov.
Fruit body 9 x 6 cm, branched, comma-shaped in outline. Stipe small, 7 x 7 mm, rounded, without abortive branchlets, obscurely rhizomorphic at base, white; flesh white, solid, now insect-riddled (in type specimen). Major branches two, more or less terete, white below, pale buffy yellow upward. Branches ascending, terete, more or less strict, pale fleshy buff (5A2); internodes diminishing gradually at maturity; axils narrowly rounded. Apices minutely digitate, dichotomous or double-dichotomous, pale greenish yellow (2A4). Odor and taste indistinctive.
Macrochemical reactions (teste McAfee and Grund): FSW: positive; PYR, ANW: equivocal, perhaps weakly positive; GUA, PHN, ANO: negative.
Stipe tramal hyphae 5 -10 µm diam, hyaline, thick-walled (wall up to 1 µm thick), stiff, free, interwoven; ampulliform clamps tibiiform, up to 13 µm broad, locally but coarsely ornamented. Tramal hyphae of upper branches 3-7 µm diam, hyaline, thin-walled, clamped, parallel; subhymenium extensive, pseudoparenchymatous; hymenium thickening; basidia 52-70 x 8-10 µm, clavate, clamped; contents more or less homogeneous; sterigmata 4, often aberrant or misplaced.
Spores 7.6-9 x 3.6-4.3 µm (E = 1.83-2.50; Em = 2.25; Lm = 8.41 µm), cylindrical, obscurely roughened in profile; contents with 1 or 2 obscure guttules; wall up to 0.2 µm thick; hilar appendix small; ornamentation of isolated short ridges or warts often longitudinally arranged.
McAfee and Grund (1982) rightly drew attention to this specimen as distinct from all others. They cited it under R. flavobrunnescens var. aurea (see below for discussion of author citation). The type specimen of Coker's variety (see Petersen 1982), however, was described as having apricot branches and chrome apices, while microscopically, it shows local, sporadic clamp connections on tramal hyphae and larger (8.3-11.5 x 3.3-4.1 µm; Lm = 9.95 µm), barely roughened spores. I also cannot consider the ACAD specimen as fitting under R. flavobrunnescens, which shows brunnescent bruising reactions and longer, more slender spores. Instead, I consider the specimen to represent a distinct species.
The color of branch apices given by McAfee and Grund is unusual for the subgenus. Branch color is quite ordinary (pale buffy salmon) and is shared by several other taxa. Apex color,
however, was given as pale greenish yellow, actually very pale chartreuse. In my experience, this color is shared only by R. capitata (Lloyd) Corner from Australia, and some vernal western North American taxa such as R. magnipes (q.v.) and R. rasilispora Marr and Stuntz.,
McAfee and Grund stated that R. flavobrunnescens var. aurea was reported by Wehmeyer (1935) from Nova Scotia as Clavaria flava var. aurea, but I cannot find any record indicating that the former authors examined Wehmeyer's material.
This species will be difficult to identify in the field. The only fruit body of the type collection is not large, but shows the very small, rounded stipe branched almost from the base. The small spores will serve as the diagnostic taxonomic marker.
McAfee and Grund (1982) used incorrect author citation for the taxon they called R. flavobrunnescens var. aurea, attributing the combination to Coker. In this, they apparently followed Corner (1950) who also misstated the author. Although Coker (1923) considered Clavaria flava and Clavaria flavobrunnescens to be synonymous, he used the former epithet for reason of priority. Therefore, when he described var. aurea, it was under C. flava. Thus Corner (1950) actually transferred Coker's var. aurea as a combination under Ramaria flavo-brunnescens (Ark.) Corner. The combination must be cited as R. flavobrunnescens var. aurea (Coker) Corner.
SPECIMEN EXAMINED: CANADA: NOVA SCOTIA: Kings Co., Harrington Slope, 2.ix.77, coll. McAfee (No. 97), No. 12940 (ACAD, holotype).
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