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 Add this item to the list  Ramaria lutea (Vitt.) Schild
Page number:32 
Description type:Non-original description 
Description:Ramaria lutea (Vitt.) Schild
Ramaria lutea (Vitt.) Schild. 1977. In Persoonia 9: 41 = Clavaria lutea Vitt. 1835. Descr. Fung. mang. Ital.: 228.
Fruitbodies (Schild, 1977: fig. 1A-C) up to 12 x 8 cm, sphaeropedunculate to broadly comma-shaped in outline. Stipe up to 5 x 2.5 cm, single, without abortive branchlets, smooth, tapering gradually to rounded base, off-white; brunnescence not recorded; flesh offwhite, marbled, with moist or gelatinous areas, discoloration not recorded, drying hard, impenetrable. Major branches several, hardly terete, upward concolorous with branches. Branches in 3-7 ranks, more or less terete, pale lemon yellow (teste Nannfeldt) to sulphur yellow (S. 289, 290, 312, teste Schild), mellowing in age to dull ochraceous flesh color (S. 199); internodes diminishing gradually upward; axils rounded; flesh off-white, marbled to gelatinous. Apices minutely rounded to minutely turbinate, dichotomous, concolorous with branches (teste Nannfeldt, Schild) or somewhat paler (S. 320, teste Schild). Odor not recorded; taste mild (teste Nannfeldt).
Macrochemical reactions not recorded.
Tramal hyphae of upper branches 3-16 µm diam., hyaline, thin-walled, strictly parallel, firmly adherent (not agglutinated), clampless; crystalline deposits occasional, amorphous, interhyphal; ampulliform septa up to 15 µm broad, thick-walled (wall up to 0.5 µm thick), symmetrically tibiiform, unornamented or with delicate stalactitiform ornamentation; gloeoplerous hyphae hardly refringent, 2-4 µm diam., strongly cyanophilous, as short lengths sometimes delimited by a septum. Subhymenium extensive; hyphae 1.5-2.5 µm diam., hyaline, thin-walled, clampless, tightly interwoven. Hymenium thickening; basidia 50-60 x 7-8 µm, clavate, clampless; contents homogeneous or multivacuolate, and then often with a few minute, scattered granules; steriµmata 4, delicate, curved.
Spores (Schild, 1977: Fig. 2A) 6.5-9.0 x 4.0-4.7 µm (E_ = 1.64-2.09; Em = 1.87; Lm = 8.09 µm), ellipsoid to subcylindrical, flattened adaxially, delicately roughened in profile; contents 1-2-guttulate, the guttules dark, non-refringent; wall up to 0.2 lttn thick; hilar appendix small, papillate; ornamentation mostly short ridges with no apparent orientation, with some small, discrete warts.
Superficially, fruitbodies of R. lutea resemble those of Ramaria European taxon I, with substantial, tapering stipe and yellow upper parts. The latter, however, produces smooth spores (12.2-16.2 x 4.7-5.4 µm; Lm = 13.7 µm), clamped basidia, and common abortive branchlets. Concommitantly, R. obtusissima var. scandinavica exhibits clamped basidia, smooth spores (11.2-12.6 x 4.0-4.7 µm; Lin = 11.8 µm), but smooth stipe.
Microscopically R. lutea seems quite similar to R. flavo-saponaria, which shares adherent to agglutinated tramal tissue, clampless basidia and small spores (7.2-11.2 x 3.6-5.4 µm; _Lm = 9.1 µm). The two are easily separated, however, by fruitbody stature and shape. Fruitbodies of R. flavo-saponaria show a small stipe beset with numerous clusters of abortive branchlets.
Surely specimens of R. lutea have passed under the name R. flava, as have several other taxa. With R. }lava now secured to a type specimen (see above and Petersen, 1974), it is possible to segregate inaccurately identified specimens. Ramaria }lava fruitbodies show clear lemon yellow color, non-rooting stipe, non-gelatinous flesh, clamped basidia and somewhat larger spores (11.8-14.8 x 5.2-5.9 µm; Lin = 12.9 µm) than those of R. lutea.
Branch color was reported as `schwefelgelb' by Schild, and colors shown by Sdguy (1936) are light lemon yellow, with some green component. Colors of continental European specimens (see Schild, 1977), therefore, are exactly those of the Scandinavian specimen cited below.
Schild (1977: 413) measured spores as (5.5-)6-10.5(-10.8) x 3.2-5.5 µm. While not furnishing statistics, median values of these dimensions are very close to those described above for the Scandinavian collection.
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