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Nomenclature

Lactarius lignyotus Fr.
Monogr. Lact. Suec.: 25. 1855.

Lactariella lignyota (Fr.) Schröter
Krypt.-Fl. Schlesien 3 (1): 544. 1889.

Lactifluus lignyotus (Fr.) Kuntze
Revis. gen. pl. 2: 857. 1891.

Taxonomic synonyms:

= Lactarius fuliginosus var. major Fr., Epicr. syst. mycol.: 348. 1838.

= Lactarius geminus P. Karst., Not. Sallsk. Fauna Fl. Fenn. Forh. 6: 329. 1868.

= Lactarius lignyotus f. gracilis Bres., Icon. mycol. 8: pl. 386. 1929.

= Lactarius lignyotus var. hirtellus A.H. Sm. & Hesler, Brittonia 14: 396. 1962.

= Lactarius picinus var. americanus A.H. Sm. & Hesler, Brittonia 14: 403. 1962.

Original diagnosis

Ic. Fr. in Mus. Ac. Holm.
Inter muscos, locis humidis, in silvis abiegnis Smolandiae etc. passim; etiam prope Upsaliam in Kungsparken nos legimus. Spongioso-fragilis, cum ceteris hujus gregis speciebus valde insignis, lacte parco, miti, grato, cum carne fracta ex aquoso-albo rubello, demum crocato, odore debili. Stipes molli-fragilis, elongatus, spongioso-farctus, corticatus, subventricosus, apice constrictus eleganterque plicatus, 5 unc. longus, media parte ¾ unc., apice ¼ unc. crassus, pruinoso-velutinus, pileo ceterum concolor sed deorsum pallescens, albicans. Pileus carnosus, tenuis, elastico-fragilis, convexo-explanatus, subdepressus, margine primitus incurvo, dein deflexo, papilla acuta, vix evanescente, umbonatus, eumorphus, 2½ unc. latus, minute, pulchre, ratione radii, plicato-rugulosus, pruinoso-velutinus, demum glabratus, azonus, aridissimus, valde opacus, subpurpurascenti-umbrinus. Caro pilei tenuis, latitudinem lamellarum vix aequans, fracta, cum stipitis ex albo-candido demum et tarde rubella, ochracea, ferruginea. Lamellae primitus rotundato-adnatae, subarcuatato-horizontales, demum subdecurrentes, lineam et ultra latae, tenuiores, subconfertae, juniores prorsus niveae, dein albo-ochraceae, vulneribus rubellis.

Typification

Information not available

Description

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Microscopy

SEM photos