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Description type:Original description 
Description:Ramaria flavo-microspora R. Petersen, sp. nov. FIGS. 11-13
Fruitbodies (FIGS. 11, 12) up to 7 x 3 cm, broadly fusiform in outline when mature. Stipe single, variable in size up to 25 x 14 mm, but sometimes quite small, white at base, smooth, tapering gradually and occasionally subradicate; flesh solid to lacunose, soft, often watery but not soapy or gelatinous, drying hard. Major branches 2-several, ascending, up to 5 mm thick, pale pinkish salmon; flesh white to delicate pink, with large portions often hollow. Branches in 3-5 ranks, ascending and almost strict, pale salmon pink to buff ("light ochraceous buff," near "light ochraceous salmon," brighter than "pinkish buff"), fading in age to buffy ochre ("light buff"), elongating significantly during fruitbody maturation; internodes lengthening acropetally ontogenetically; internode ratio diminishing gradually at maturity; axils rounded; apices delicate when young, stiff, double-dichotomous, elongating in adolescence, bright pale yellow to bright light greenish yellow ("maize yellow," between "pinard yellow" and "picric yellow"), finally slender, digitate, dichotomous. Odor weakly fabaceous; taste negligible.
Macrochemical reactions: FCL = strongly positive; KOH, NOH, PYR, ANO, PHN, GUA, IKI = negative.
Tramal hyphae of upper branches up to 8 µm diam, hyaline, strictly thinwalled, clampless, more or less parallel, free to somewhat adherent. Hymenium thickening; basidia 36-50 x 6-8 µm, clavate, clampless; contents granular, es pecially toward base, weakly cyanophilous; sterigmata 4, slender, straight, spindly.
Spores (FIG. 13) 6.1-7.9 x 4.3-5.4 µm (E = 1.27-1.75; Em = 1.51; Lm = 7.09 µm), broadly cylindrical to broadly ovate, subtly roughened in profile; contents 1-3-guttulate at maturity; wall up to 0.2 µm thick; hilar appendix papillate, prominent; ornamentation of slender, reluctantly cyanophilous low ridges and warts with no apparent orientation.
Commentary. -Microscopically, with small but broad spores and clampless basidia, this would seem similar to R. lorithamnus (Clel.) Pet., R. ignicolor (Bres.) Comer, R. raveneliana (Coker) Pet., and R. fasciculata (=R. conjunctipes var. odora). In coloration, it seems close to all these except R. lorithamnus, which is yellow-ochre all over. The following distinctions must be made from all the others, however. (1) Fruitbodies of R. flavo-microspora are consistently single-stiped, only a very few individuals branching so low on the stipe as to appear fasciculate. All the other taxa mentioned are fasciculate. (2) Fruitbodies of R. flavo-microspora do not show the relatively bright salmon pink of the other taxa, but only subdued, pastel, pallid shades of pale salmon buff.
As in other taxa, the bases of major branches are minutely scurfy, and when spore production begins, ochraceous crescents are highlighted as spores gather on those roughened places.
SPECIMENS EXAMINED: NORTH CAROLINA: Macon Co., Coweeta Hydrol. Lab., 17.vii.84, No. 45690 (HOLOTYPE-TENN); Transylvania Co., Pisgah Nat. For., Yellow Gap Rd., 24.vii.84, No. 45723 (TENN); Transylvania Co., Pisgah Nat. For., viii.64, No. 31307 (TENN).
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