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Description type:Culture description 
Description:Ramaria celerivirescens sp. nov. (P1. III Fig. 13, P1. XV Fig. 70)
Holotypus M-841 ad lacum Mason prope Shelton in comitato toniaci 11/1/67 lectus, in herbario SUCO conservatus.
Basidiocarp: Habitat: terrestrial, growing under Western Hemlock. Color-stipe of fresh fruiting body white or "yellowish white" (4-5A2), covered with subareolate patches of "brown to reddish brown" (6-l0E,F8) superficial hyphae, branches pale to light orange" (5-6A3-5), apices "light to sunflower yellow" (3-4A4-7), a distinctive contextual band of pale "camel brown" (6D4) hyphae visible in the basal region of a radially section stipe, white above, context of the branches subconcolorous or slightly more reddish than surface. Stipe of dried specimens "pale yellow" (4A3) with. "dark brown" (7F5) areas, branches paler than "grayish orange" (5B5), apices concolorous or slightly darker, context of the stipe similar to that of fresh material, context of the branches "yellowish white" (4A21. Form: basidiocarps usually of medium size, 6-18 x 3-10 cm. Stipe single, surface rough, cylindrical or tapered, 2-7 x 1: 3 cm; branching up to 10 times from the stipe, polychotomous or dichotomous, axils acute to turbinate and branches slightly divaricate, lower branches with internodes up to 5 cm long and up to 1.3 cm in diam, upper branches usually much less elongated and more slender, 1-5 mm diam, bifid or multifid near apices; apices subacute to rounded. Consistency: fleshy-fibrous when fresh, hard at the base and generally brittle in the branches when dried.
Macrochemical Reactions: Context of the stipe amyloid in fresh specimens, the reaction usually slow; context of fresh specimens instantly turning "dark green" (25E8) on application of 10% Fe 2(SO4)3; the brown contextual band in the stipe dark ening on application of 20% KOH; no significant color changes occurring within 30 min of application to branch sections of pyrogallol, a-napthol, guaiac, guaiacol, phenol and aniline; with more time guaiac may become weakly positive.
Microscopic structures: Spores: average 9.5 x 4.6 µm, range 8-11 x 4-6 µm, subcylindrical with a prominent lateral apiculus, up to 2 x 2 µm, ornamented with coarse, irregularly shaped, cyanophilous warts, spores in deposit "grayish yellowish orange" (4-5B3-6). Hymenium: basidia clavate, 41-70 x 7-11 µm, sometimes the basidial cell giving rise to lateral branches, without clamps, 2-4-sterigmate, mostly 4; sterigmata 3-8 µm long, mostly straight, occasionally incurved, not divergent; hymenium and subhymenium combined 75-90 µm thick. Subhymenial hyphae: interwoven, 3-5 µm diam, thinwalled, without clamps. Contextual hyphae: interwoven in the stipe, parallel in the branches, mostly non-inflated in the stipe, 6-11 µm diam, hyphae of the branches sometimes highly inflated, 3-20 µm diam, walls smooth or slightly fluted, moderately cyanophilous, thin-walled, globular cyanophilous inclusions sometimes conspicuous, hyphae frequently vesicular near a septum, 10-18 µm diam, walls of the vesicles distinctively ornamented in the stipe, moderately so in the branches; clamps absent; gleoplerous hyphae rare, mostly 2.5-3.5 µm diam.
Discussion: Fruiting bodies of R. celerivirescens are colored very much like those of R. formosa, in young specimens the branches are light pinkish orange with yellow tips. Unlike R. formosa the basidiocarps of R. celerivirescens do not dis color with handling and the hyphae are without clamp connections. Several characteristics diagnostic of R. celerivirescens are also typical of R. amyloidea, including: (1) a context which instantly turns blue-green after application 10% ferric sulphate, (2) a distinctive contextual band of pale brown hyphae visible in the basal region of a radially sectioned stipe, (3) amyloid context, and (4) a somewhat similar color of the basidiocarp. These species differ, however, with respect to the occurrence of clamps, fruiting body form and spore ornamentation. Ramaria velocimutans is a third species which has a contextual band of pale brown hyphae in the stipe and reacts quickly with ferric sulphate, but it differs in its larger size and whitish fruiting bodies.
Descriptions provided by Cleland (1931), Fawcett (1939), Corner (1950) and Petersen (1969) reveal many similarities between R. ochraceo-salmonicolor (Clel.) Corner and R. celerivirescens. Comparison of the two species confirmed. that they are closely related, but not conspecific. The spores, while nearly the same in dimensions, differ in shape and ornamentation. Those of R. celerivirescens tend to be cylindrical to subclavate with coarse random warts, and spores of R. ochraceosalmonicolor are more ellipsoid with finer warts often in oblique, parallel rows. The most obvious difference between the species may be the extensive reddish brown discoloration of the stipe surface in R. celerivirescens. The branch tips of R. celerivirescens can hardly be described as subcapitate, a feature of R. ochraceosalmonicolor emphasized by Fawcett (1939) and Corner (1970), but a characteristic not markedly evident in the type.
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