First person to use this name on MO: Herbert Baker
Name: Craterellus boyacensis
Citation: Mycopathologia et Mycologia Applicata 20: 239 (1963) [MB#329220]
Description type: Original description
Description: Craterellus boyacensis SING. spec. nov.
Pileus deep fuscous, dry, rugose-scabrous, very deeply umbilicate, eventually infundibuliform, marginal zone strongly convex, eventually extreme margin partly recurved, not perforated, up to 47 mm broad. -
Lamellae well formed but narrow and with obtuse edges, about 11 on margin per 10 mm of circumference, much like the lamellae of Cantharellus cibarius FR., often forked and in parts narrowing to vein-like ridges, arcuate-decurrent, the whole hymenial surface cinereous gray, but in dried material becoming yellowish to dull ochraceous (12-F/G-5 or “powdered gold” M&P). Spore print not obtained. -
Stipe blackish, glabrous, hollow, not viscid, tapering downwards or equal, 30-50 × 4-5 mm. Context cartilaginous-fleshy; odor none.
Spores 8.5-11 × 4.5-6.8 µm, hyaline to yellowish-hyaline, smooth, thin-walled, ellipsoid to reniform or subcylindric, without suprahilar depression, filled with a pale yellowish oily dense contents which turns deep and bright blue in cresyl blue mounts, with hyaline wall. – Hymenium consisting of basidia and basidioles; basidia (20)-25-50-(72) x 5.8-11.3 µm, versiform, (2)-(3)-4-spored, pale yellowish because of the same contents as in the spores and therefore, in cresyl blue mounts, resembling gloeocystidia. – Hyphae underneath the hymenium little pigmented and 2-8 µm in diameter, near surface of pileus cinnamon (in KOH) and many with a vacuolar fuscous pigment besides, not gelatinized, 2-9-(12) µm in diameter; all hyphae thin-walled to almost thin-walled, smooth, filamentous, without clamp connections.
Chemical characters: KOH with surface of pileus and stipe blackening.
On the ground in oak woods (Quercus humboldtii and Q. columbiana) in groups, fruiting during a period of little precipitation.
Material studied: COLOMBIA: BOYACA: Tunja, Arcabuco, Finca del Sehor Luis Antonio Porras, 29-VII-1960, SINGER B 3598 (BAFC), TYPUS.
This is the only representative of the Cantharellaceae observed in Colombian oak woods, and the first known from Colombia. In South America, there is only one similar species, C. orinocensis PAT., known to me from Pernambuco and Paraibo, Brazil; but this latter species – although it may form cicatrizer mycorrhiza with leguminous or sapindaceous trees in the tropical forest – does not form mycorrhiza with typical mycorrhiza trees such as conifers, Fagaceae and Betulaceae.
C. boyacensis differs from related species, such as C. cinereus (Cantharellus cinereus PERS. ex FR.), in the cinereous hymenial surface which turns yellowish on drying, the absence of an odor and the blackish stipe. I was at first inclined to identify this with C. cinereus (PERS. ex FR.) DONK, but believe now that the two species are different. The spore print color is probably ochraceous in the Colombian species.
Created: 2016-02-03 17:56:21 CST (-0600) by Herbert Baker
Last modified: 2018-01-13 12:01:21 CST (-0600) by Herbert Baker
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