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Nomenclature

Lactarius trivialis (Fr.: Fr.) Fr.
Epicr. syst. mycol.: 337. 1838.

Agaricus trivialis Fr.
Observ. mycol. 1: 61. 1815.

Galorrheus trivialis (Fr.: Fr.) Fr.
Stirp. agri femsion. (III): 57. 1825.

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

Taxonomic synonyms:

= Lactarius curtus Britzelm., Ber. Naturhist. Vereins Augsburg 28: 137. 1885.  — Lactifluus curtus (Britzelm.) Kuntze, Revis. gen. pl. 2: 856. 1891.

= Lactarius deflexus Lindblad, Monogr. Lact. Suec.: 8. 1855.

= Lactarius homaemus Britzelm., Ber. Naturhist. Vereins Augsburg 28: 137. 1885.  — Lactifluus homaemus (Britzelm.) Kuntze, Revis. gen. pl. 2: 857. 1891.

= Lactarius vietus f. constans J.E. Lange, Fl. agaric. danic. 5: 39. 1940.

Original diagnosis

pileo obscure cinerascenti-incarnato depresso subviscoso, lamellis albo-lactescentibus, stipite elongato albido. Krapf. esb. schw. I. t. 5. f. 1,2,3.
In pinetis sat frequens.
Descr. Stipes elongatus 2-4 uncial. crassus cavus subaequalis l. inferne parum crassior subfragilis laevis superne glaber deorsum pubescens. Pileus planiusculus, vertice depresso, subinfundibuliformis carnosus 2-4 unc. laevis siccus l. viscosus, quod a coeli temperie pendet, obscure cinereo-incarnatus, margine reflexo. Lamellae albidae subdecurrentes inaequales, venis saepe connexis, interdum dichotomae carne pilei basi angustiores, apice latiores. Variat lamellis adnatis. Lac, ut in priori, album subacre, non vero acerrimum, immutabile.
Varietatem l. potius monstrositatem, pileo depresso piloso-squamuloso, succo aquoso, stipite rufescente subvilloso eisdem locis semel observavimus.
Ag. pallido proximus, sed colore et magnitudine valde diversus. Ab. A. lurido lacte immutabili pluribusque aliis differt characteribus. Habitu quodam triviali semper distinguitur.

Typification

Information not available

Description

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Microscopy

SEM photos