identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
6DE1D1C4D0625272AED992D126C4C0D6.text	6DE1D1C4D0625272AED992D126C4C0D6.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lactarius megaplinthogalus Verbeken & Nuytinck 2026	<div><p>Lactarius megaplinthogalus Verbeken &amp; Nuytinck sp. nov.</p><p>Figs 1, 2, 3</p><p>Diagnosis.</p><p>Pileus 65–110 mm diam., slightly depressed to infundibuliform, brown to blackish brown; surface soft and wrinkled. Lamellae very distant. Context first white, then turning pink, later greyish. Latex white, abundant, remarkably sticky, staining the gills pinkish, then blackish. Spores globose to subglobose, 8.7–9.7 – 10.7 × 8.1–8.9 – 9.7 µm; ornamentation composed of very irregular and interrupted ridges, locally acute and 1 to 1.8 µm high, forming an irregular and incomplete reticulum. Pleuropseudocystidia very abundant. True pleurocystidia absent. Pileipellis a trichopalisade to palisade, with terminal cells sometimes irregularly clavate, sometimes rather slender, with dark intercellular pigmentation in the upper layers.</p><p>Typus.</p><p>Lao PDR - Xieng Khouang Province, Pek District, Man Xom-Suea village, in mixed forest with Fagaceae and Pinus kesiya, 14 May 2015, Verbeken 15-108, HNL 500819 (holotypus HNL, isotypus GENT) .</p><p>Etymology.</p><p>referring to the stout and large fruitbodies which are outstanding in L. subgenus Plinthogalus .</p><p>Description.</p><p>Basidiocarps (Fig. 1 a) epigeous, agaricoid, stout and firm. Pileus 65–110 mm diam., applanate and slightly depressed in center to broadly infundibuliform, with margin bent downwards; surface soft, dry, very wrinkled, radially wrinkled in the center, concentrically wrinkled in outer half, very dark brown, blackish brown, raw umber to coffee brown (5 F 7-8), in some specimens unicolorous, in other specimens locally with pale brown to whitish spots. Stipe 45–85 × 10–24 mm, cylindrical and regular, a bit narrower at the base; surface soft, dry, with some slight longitudinal wrinkles especially near the base, with the same greyish-brownish tinges as the pileus but much paler (5 DE 3-4) to almost whitish in older specimens. Lamellae narrowly adnexed, very distant (23 to 29 L / half a pileus, 3 L / cm) with abundant lamellulae in a regular short-long-short pattern, up to 15 mm broad, pale yellow to greyish yellow (4 AB 3-4), but almost whitish where they touch the stipe. Context thick and firm in the pileus, but thin in the outer part, solid and rather firm to compressible in the stipe, white, then changing to pink (7 AB 3), especially in the pileus and stipe context, later greyish, dark greyish to blackish brown, especially under the pileus and stipe surface; smell like paint; taste first agreeable and nut-like, then very acrid, and disagreeable, astringent. Latex white, abundant, remarkably sticky, staining the gills pinkish, then blackish. Spore-print cream-colored.</p><p>Spores (Fig. 1 b) globose to subglobose, 8.7–9.7 – 10.7 × 8.1–8.9 – 9.7 µm (n = 20, Q = 1.01–1.08 – 1.20); ornamentation amyloid, composed of very irregular and interrupted ridges, locally acute and 1 to 1.8 µm high, forming an irregular and incomplete reticulum; abundant isolated and irregular warts present: plage distally to totally amyloid. Basidia (Fig. 1 c) subclavate, 50–75 × 10–17 µm, often remarkably thick-walled, sometimes only locally, sometimes over the whole length; sterigmata rather large and thick, up to 13 µm long; content guttulate. Pleuropseudocystidia (Fig. 2 c) very abundant, sometimes emergent, often branching near the top, rather plump, stout and irregular, up to 10 µm diam. True pleurocystidia absent. Hymenophoral trama filled with lactifers of all diameters, very densely interwoven and branching, mixed with some normal generative hyphae; sphaerocytes absent. Lamellar edge completely sterile, composed of marginal cells (Fig. 2 a), 10–20 × 7–12 µm, clavate to fusiform; cheilopseudocystidia (Fig. 2 b) also present. Pileipellis (Fig. 2 d) a trichopalisade to palisade, 60 to 100 µm thick; terminal cells 10–30 × 5–15 µm, sometimes irregularly clavate, sometimes rather slender, with dark intercellular pigmentation in the upper layers.</p><p>Supplementary study material.</p><p>Lao PDR • Xieng Khouang Province, Pek District, Man Xom-Suea village; in mixed forest with Fagaceae and Pinus kesiya; 14 th May 2015; Verbeken 15-111 (HNL 500822) . • Xiang Khouang province, Phaxay district, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=103.1375&amp;materialsCitation.latitude=19.266666" title="Search Plazi for locations around (long 103.1375/lat 19.266666)">Hai village</a>, 19°16.00'N, 103°08.25'E (DDM), ca 1200 m. a. s. l.; in mixed forest with Quercus spp., Castanea spp., Lithocarpus spp., and Pinus kesiya; 30 May 2012; Pedersen OSP 20120530–004 (HNL 500350) .</p></div>	https://treatment.plazi.org/id/6DE1D1C4D0625272AED992D126C4C0D6	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Verbeken, Annemieke;Pedersen, Ole S.;Taylor, Andy F. S.;Nuytinck, Jorinde	Verbeken, Annemieke, Pedersen, Ole S., Taylor, Andy F. S., Nuytinck, Jorinde (2026): Two new Lactarius species from Laos (Basidiomycota, Russulales). MycoKeys 132: 1-24, DOI: 10.3897/mycokeys.132.186093
737CA43A3D9052FEAB8F8E4BE909582B.text	737CA43A3D9052FEAB8F8E4BE909582B.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lactarius rosascens Verbeken & Nuytinck 2026	<div><p>Lactarius rosascens Verbeken &amp; Nuytinck sp. nov.</p><p>Figs 4, 5, 6, 7</p><p>Diagnosis.</p><p>Pileus 40–60 mm diam.; surface sticky and shiny, not slimy, yellow to honey color with darker scrobicules that form vague zones. Lamellae originally whitish, pale flesh-colored, but very soon bright pink to dark wine red by the latex. Context white, changing to pink, locally wine red to very dark; taste acrid. Latex changing to pink and wine-red. Spores subglobose to broadly ellipsoid, on average 6.5–6.8 × 5.8–6.0 µm; ornamentation with rounded ridges, up to 0.5 µm high, forming an incomplete reticulum. Pleuromacrocystidia very abundant. Pleuropseudocystidia moderately abundant. Lamellar edge fertile, with a mixture of basidia, macrocystidia, pseudocystidia and marginal cells. Pileipellis a trichoderm.</p><p>Typus.</p><p>Lao PDR • Xieng Khouang Province, Pek District, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=103.269&amp;materialsCitation.latitude=19.493668" title="Search Plazi for locations around (long 103.269/lat 19.493668)">Dong Village</a>, 19°29.62'N, 103°16.14'E DDM, ca 1130 m. a. s. l., in mixed forest with Fagaceae and Pinus, 10 May 2015, Verbeken 15-019, HNL 500714 (holotypus HNL, isotypus GENT) .</p><p>Etymology.</p><p>referring to turning pink.</p><p>Description.</p><p>Basidiocarps (Fig. 4 a) epigeous, agaricoid, moderately large. Pileus 40–60 mm diam., applanate and slightly depressed in center, rather irregular, with margin a bit wavy and locally fissured; surface sticky and shiny, not slimy, yellow to honey color, butter yellow (4 A 5), yellowish orange (4 A 7), pale orange (5 A 3) to light orange (5 A 4-5, pale yellow (3 A 3) near margin, not really concolorous, locally more yellowish than orange with darker scrobicules that form vague zones. Stipe 20–30 × 8–17 mm, shortly cylindric, tapering downwards, dry, scrobiculate, off-white to yellowish (2 A 2, 3 A 2), but also stained dirty and with some pinkish shade (7 A 3-4). Lamellae adnexed to slightly decurrent and with a remarkable almost fluorescent pinkish zone where they reach the stipe, rather dense (14 L + l / cm), with abundant lamellulae of different lengths, originally whitish, pale flesh-colored, but very soon bright pink, pastel red to greyish red (7 AB 3-4) to dark wine red and even reddish brown (up to 8 EF 5) by the latex, with in this wine reddish color also a touch of darker violet, but overall strikingly pink to bordeaux. Context not very firm (but strongly affected by fungivorous insects in all specimens), white, changing to pink, locally wine red (7 AB 3-4) to very dark (8 EF 5) where eaten; smell not particular; taste acrid. Latex abundant, white, changing to pink and wine-red, staining the lamellae very dark and intense. Spore-print not observed.</p><p>Spores (Fig. 4 b) subglobose to broadly ellipsoid, 5.8–6.5 – 6.8 – 7.5 × 5.1–5.8 – 6.0 – 6.5 µm (n = 40, Q = 1.04–1.13 – 1.14 – 1.23); ornamentation amyloid, composed of rounded ridges, up to 0.5 µm high, often interrupted, forming an incomplete reticulum, some short ridges and irregular warts present; plage distally amyloid. Basidia (Fig. 4 c, 5 a) subclavate to almost cylindric, 35–45 (50) × 8–10 µm, 4 - spored, sometimes 3 - spored; sterigmata up to 8 µm, sometimes 10 µm long. Pleuromacrocystidia (Fig. 4 e, 5 a) very abundant, emergent, 60–100 × 8–13 µm, thin-walled, fusiform, with tapering, sometimes very long, apex; apex sometimes slightly moniliform or bifurcate; content needle-like. Pleuropseudocystidia (Fig. 4 d) moderately abundant but less common than macrocystidia, slightly emergent, narrow, 3–4 µm diam., cylindric to irregular; content opaque. Lamellar edge fertile, with a mixture of basidia (Fig. 5 c), macrocystidia (Fig. 5 d), pseudocystidia (Fig. 5 e) and marginal cells (Fig. 5 b); basidia present, shorter than the basidia at the sides of the lamella, up to 30–35 × 8–10 µm; cheilomacrocystidia abundant, 40–65 × 8–12 µm, fusiform with tapering and often irregular apex, sometimes remarkably septate, thin-walled, with needle-like content; cheilopseudocystidia abundant, narrow, rather irregular and twisting, with opaque content; marginal cells hyaline, thin-walled, 10–30 × 6–10 µm, shortly-septate, with terminal part subcylindric, subclavate, or very irregular, sometimes even branching. Pileipellis a trichoderm (Fig. 6 a); subpellis a 40–60 µm thick layer of periclinally arranged hyphae; suprapellis up to 80 µm thick, composed of anticlinally arranged hyphae: terminal elements 30–40 × 2–4 µm, regularly to slightly irregularly cylindric, with rounded apex, thin-walled.</p><p>Supplementary study material.</p><p>Lao PDR • Xieng Khouang Province, Phoukou District, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=103.18533&amp;materialsCitation.latitude=19.731667" title="Search Plazi for locations around (long 103.18533/lat 19.731667)">Yai Village</a>, 19°43.90'N, 103°11.12'E DDM; in mixed forest with Fagaceae and Pinus; 11 May 2015; Verbeken 15-056, HNL 500512 .</p></div>	https://treatment.plazi.org/id/737CA43A3D9052FEAB8F8E4BE909582B	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Verbeken, Annemieke;Pedersen, Ole S.;Taylor, Andy F. S.;Nuytinck, Jorinde	Verbeken, Annemieke, Pedersen, Ole S., Taylor, Andy F. S., Nuytinck, Jorinde (2026): Two new Lactarius species from Laos (Basidiomycota, Russulales). MycoKeys 132: 1-24, DOI: 10.3897/mycokeys.132.186093
