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Page number:1146 
Remarks (internal):Leucoagaricus viriditinctus is characterized by white context, broadly clavate to pyriform cheilocystidia, and persistent dark blue changes of basidiomata when bruised or dried.
Leucoagaricus viriditinctus originally was described as Agaricus viriditinctus by Berkeley and Broome (1871) and then transferred to the genus Lepiota by Saccardo (1887). Pegler (1986) studied the type specimens of L. viriditincta and L. pyrocephala (Berk. & Broome) Sacc. and combined them as L. viriditincta. Most morphological features were similar between the type specimens of L. pyrocephala and L. viriditincta. However cheilocystidia were broadly clavate to pyriform in the type specimen of L. pyrocephala but could not be found in L. viriditincta. Manimohan et al. (1988) and Kumar and Manimohan (2009a) reported L. viriditincta from southern India yet with different sizes of basidiospores (5.0-7.0 x 3.5-4.0 µm vs. 7.0-10.0 x 4.0-5.0 µm). Based on morphological traits and the molecular phylogenetic analyses (figs. 3, 5), we transfer L. viriditincta to genus Leucoagaricus.
 
Description type:Non-original description 
Description:Leucoagaricus viriditinctus (Berk. & Broome) J.F. Liang, Zhu L. Yang & J. Xu, comb. nov. fig. 3
MycoBank MB515457
Basionym: Agaricus viriditinctus Berk. & Broome, J. Linn. Soc. Bot. 11:503. 1871.
? Lepiota viriditincta (Berk. & Broome) Sacc., Syll. Fung. 5:59. 1887.
= Agaricus pyrocephalus Berk. & Broome, J. Linn. Soc. Bot. 11:504. 1871.
? Lepiota pyrocephala (Berk. & Broome) Sacc., Syll. Fung. 60. 1887.
Basidiomata small. - Pileus 1-3.5 cm diam, when young campanulate, expanding to plano-convex to applanate, center with low umbonate and dark reddish brown to dark brown, elsewhere with whitish to dirty white ground, and covered with pale brown, reddish brown to dark brown squamules; striate or not. Context thin, white but pale blue to dark blue when bruised or dried. Lamellae free, white, moderate to crowded; lamellulae present. Stipe 1.5-6.5 cm x 1-4 mm, subcylindrical or attenuate, occasionally inflated at base, hollow, surface at first white, dark blue when handled. Annulus membranous, disappearing, white but dark blue when dried. Flavor sour (from the original description of L0627034).
Basidiospores (fig. 3A) [82/4/4] (6.5-)7.0-8.5 x 4.0-5.0 µm (Q = [1.50-]1.56-2.00[-2.13], Q = 1.74 ± 0.14), amygdaliform in side view, attenuate toward the apex, ovoid in front view, without germ pore, hyaline, smooth, slightly thick-walled, dextrinoid, congophilic, metachromatic in cresyl blue, with guttulate contents. Basidia 16-32 x 5-13 µm, clavate, four-spored, rarely two-spored, hyaline. Cheilocystidia (fig. 3B) 10-50 x 7.5-21 µm, broadly clavate to pyriform, sometimes sphaeropedunculate, rarely clavate, thin-walled, hyaline. Pleurocystidia absent. Pileipellis (fig. 3C) a loosely arranged cutis of cylindrical hyphae; terminal elements often differentiated, 16-99(-136) x 4-20(-25) µm, subcylindrical, occasionally narrowly clavate, thin-walled, with pale brown intracellular pigments, and often encrusted with brown pigments. Clamp connections absent.
Materials examined: Sri Lanka: Kandy Distrrict, Province Peradeniya, 1869, Thwaites1153 cum icon (KM139636, holotype); same location, Sep 1868, Thwaites 772 (KM139633, holotype of A. pyrocephalus); Indonesia: Wanariset Forest, East Kali mantan, 50 m, R.P.J de Kok, F-61 (L0627034); China, Yunnan Province, Jinghong (22°0'46''N, 100°47'37''E), Dadugang, on the ground, 1050 m, 7 Jul 2006, J. F. Liang 317 (HKAS 50033).
Distribution. - Sri Lanka (Pegler 1986), Indonesia (Vellinga 2003a), India (Manimohan et al. 1988) and China.
 
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