Ramaria samuelsii R.H. Petersen 1988
Details
Biostatus
Nomenclature
Classification
Associations
Descriptions
Ramaria samuelsii R.H. Petersen 1988
Fruit bodies up to 8 x 5 cm, repeatedly branched, obovate in profile; stipe single, often branched near base and appressed so as to appear fasciculate, fleshy, white where protected and there pruinose, the plush easily rubbed off to appear weakly water-soaked, involving insignificant amounts of substrate when picked. Major branches several, arising irregularly but at about the same level, up to 6 mm thick, more or less terete, usually somewhat grooved, erect, delicate fleshy pink when young ("flesh colour') becoming muted to salmon shades ("salmon colour", "light vinaceous cinnamon"); axils rounded to narrowly rounded; internodes elongating during fruit body ontogeny. Apices double-dichotomous to cuspidate, bright yellow ("light orange-yellow") when young, fading to yellow ("buff-yellow"). Flesh of branches orange-yellow upward ("capucine-orange"), stuffed to almost hollow upward, solid downward, white. Stipe surface weakly brunnescent to hygrophanous; apices slowly weakly vinescent when bruised. Odour weakly fragrant; taste weakly bitter.
Macrochemical reactions: NOH, KOH = carrot orange; FCL = quickly forest-green; PYR, PHN, ANO, GUA, IKI = negative.
Tramal hyphae of branches 5-12 Am diam., thin-walled, clampless, free outward, adherent inward, hyaline, parallel; ampulliform septa occasional, up to 12 Am broad, slightly thick-walled (wall up to 0.4 Am thick), unornamented. Hymenium thickening; basidia 90-95 x 12-16 Am, clavate to inflated apically, clampless, moderately cyanophilous; contents with scattered, large refringent guttules; sterigmata 4, up to 10 Am long, curved-erect.
Spores (Fig. 108) 10.1-13.3 x 5.0-6.5 gm (E = 1.83¬2.21; E'^ = 2.04; L'^ = 11.86 gm), ellipsoid to elongate-ellipsoid, subtly roughened; contents uni- to several-guttulate; wall thin to slightly thick (wall up to 0.2 gm thick); hilar appendix papillate, small; ornamentation of narrow ridges and low warts generally oriented longitudinally from abaxial-distal to adaxial-proximal.
Receptacula ad 80 x 50 mm, ramosiora, in circumscriptione obovata. Stipite indivisibili, strictim fasciculato, albo, pruinoso. Ramis et ramulis pallide incarnatis ad pallide salmoneis; apicibus cuspidatis, bidichotomis, flavis junioribus, vetustioribus pallide flavis; ubi contusis aquoso-brunnescentibus; contusis in apicibus leniter vinascentibus. Odore leniter aromatico; sapore leniter amaro.
Hyphis efibulatis, non inflatis; basidiis 90-95 ~tm longis, clavatis, efibulatis; sterigmatibus 4. Sporis 10.1-13.3 x 5-6.5 pin, ellipsoideis ad elongato-ellipsoideis, ornatis, ut in oratione infra.