TABLE 1 in A key to Meistera (Zingiberaceae: Alpinioideae) in Cambodia, Laos and Vietnam, with a description of a new species, M. muriformis

TABLE 1. Meistera species in Cambodia, Laos and Vietnam and their spot characters with the most distinctive character states in bold (AC—anther crest; FR—fruit; LA—labellum; LB—Leaf blades; LI—ligule; LS—leaf sheaths). The characters and the distribution are mainly based on information from Lamxay & Newman (2012), and supplemented with information from protologues and other works cited in Introduction.
Currently accepted nameDistributionSpot characters(Basionym)CLVVegetativeGenerativeM. calcarata (Lamxay & M.F.Newman) Škorničk. - & M.F.NewmanY-To 1.8 m tall; LS striate or smooth, glabrous; LI 1–5 mm, ovate, red toOpen flower; LA white and yellow with red markings; FR(Amomum calcaratum Lamxay & M.F.Newman)light green, tomentose, margin ciliateechinateM. caudata Šída f. & Škorničk.--YTo 1.5 m tall; LS very finely striate,Open flower; LA white andglabrous; LI c. 2.5 mm, bilobed, green, yellow with red markings; FR glabrous incl. margin echinateM. celsa (Lamxay & M.F.Newman) Škorničk. & M.F.Newman (Amomum celsum Lamxay & M.F.Newman)-YYTo 2.5 m tall; LS glaucous, striate, glabrous; LI 5–7 mm, ovate, pink to light green, tomentose, margin ciliatePeduncle> 150 cm; open flower; LA white with yellow central part; FR echinateM. chinensis (Chun ex T.L.Wu) Škorničk. &YYYTo 3 m tall; LS reticulate, glabrous; LIGullet-type flower; LA whiteM.F.Newman (Amomum chinense Chun ex T.L.Wu)4–5 mm, rounded to emarginate, red to and yellow with red markings; reddish brown, glabrous, margin ciliate FR echinateM. cristatissima (N.S.Lý & Škorničk.) Škorničk.--YTo 1.2 m tall; LS finely striate orLA yellow with red markings;(Amomum cristatissimum N.S.Lý & Škorničk.)smooth, glabrous; LI 1–2 mm, truncate FR echinate to shallowly bilobed, green, glabrous incl. whitish-green marginM. echinocarpa (Alston) Škorničk. & M.F.Newman (Amomum echinocarpum Alston)-Y-To 1.8 m tall; LS striate, glabrous; LI 1–3 mm, truncate, green, glabrous; LB with hairy primary veinsOpen flower; LA white and yellow with red markings; FR echinateM. elephantorum (Pierre ex Gagnep.) Škorničk. & M.F.Newman (Amomum elephantorum Pierre ex Gagnep.)YYYTo 4 m tall; LS striate, glabrous; LI 5–10 mm, emarginate, brown, glabrous, margin ciliateGullet-type flower; LA white and yellow with red markings; FR echinateM. gagnepainii (T.L.Wu, K.Larsen & Turland) Škorničk. & M.F.Newman (Amomum thyrsoideum Gagnep. 1903: 256, nom. illeg.; Amomum gagnepainii T.L.Wu, K.Larsen & Turland)--YTo 1 m tall; LS striate, glabrous; LI 3–5 mm, shallowly bilobed, green, glabrous incl. whitish-green marginOpen flower; LA white and yellow with red markings; FR echinateM. koenigii (J.Gmel.) Škorničk. & M.F.Newman (Amomum koenigii J.F.Gmel.)-YYTo 2.5 m tall; LS glaucous, striate, glabrous; LI 5–10 mm, bilobed, red to dark brown, glaucous when young, glabrousOpen flower; LA white and yellow with red markings; FR smooth, lenticellateM. muriformis Škorničk. (described here)--YTo 1.8 m tall; LS reticulate toOpen flower; LA white andmuriform, glabrous but with densely yellow with red markings; pubescent margin; LI to 5 mm, AC semi-circular to bluntlybilobed, green to dark red and covered squared to oblong; FR echinate by dense brown hairs throughout; LB pubescent abaxiallyM. stephanocolea (Lamxay & M.F.Newman) Škorničk. & M.F.Newman (Amomum stephanocoleum Lamxay & M.F.Newman)-Y-To 1.5 m tall; LS striate to finely reticulate, tomentose; LI 1–3 mm, ovate to truncate, tomentose with long hair, margin ciliateOpen flower; LA white and yellow with red markings; FR echinate, spines branched(Basionym)CLVVegetativeGenerativeM. sudae Šída f. & Škorničk.--YTo 1 m tall; LS very finely striate to smooth, glabrous; LI c. 1 mm long, broadly ovate, reddish green, margin glabrous or very sparsely ciliateOpen flower; LA plain yellow; FR echinateM. tomrey (Gagnep.) Škorničk. & M.F.Newman var. tomrey (Amomum tomrey Gagnep.)YYYTo 2.5 m tall; LS glaucous, striate, glabrous; LI 5–10 mm, ovate, red to dark brown, glabrous, margin ciliateOpen flower; LA white and yellow with red markings; FR smooth, tomentoseM. tomrey var. stenophylla (Gagnep.) Škorničk. & M.F.NewmanY-YTo 2 m tall; LS striate, glabrous; LI 5–10 mm, ovate, glabrous, marginOpen flower; LA white and yellow with red markings; FR(Amomum tomrey var. stenophyllum Gagnep.)ciliatesmooth, tomentoseM. verrucosa (S.Q.Tong) Škorničk. & M.F.Newman--YTo 3.5 m tall; LS finely striate; pubescent; LI 3–10 mm, subtruncate-Gullet-type flower; LA yellow with red markings; FR(Amomum verrucosum S.Q.Tong; see also Ye et al. 2021)rounded, green to maroon, densely villoseechinateM. vespertilio (Gagnep.) Škorničk. & M.F.Newman-YYTo 2.6 m tall; LS finely striate, glabrous; LI 5–10 mm, sometimesGullet-type flower; LA yellow- red; FR echinate(Amomum vespertilio Gagnep.; see also Ye et al. 2021)obscurely bilobed, green-reddish, glabrous with ciliate margin
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