Meistera Giseke 1792

Overview & Synopsis

Key to Meistera species in Cambodia, Laos and Vietnam.1. Flower open; labellum white and yellow, with some red markings; fruit smooth .............................................................................2- Flower gullet-type or open; labellum white and yellow or yellow, with or without some red markings or tinge; fruit echinate......32. Fruit ellipsoid, shiny, lenticellate, glabrous....................................................................................................................... M. koenigii- Fruit globose to sub-globose, matt, puberulent ................................................................................................................... M. tomrey3(1). Labellum yellow or yellow red...........................................................................................................................................................4- Labellum white and yellow, with or without some red or markings or tinge.....................................................................................74. Labellum plain yellow, or rarely with two thin red lines; anther with minute crest.............................................................. M. sudae- Labellum with prominent red markings; anther with prominent crest ...............................................................................................55. Flower open; labellum prominently clawed ............................................................................................................... M. cristatissima- Flower gullet-type; labellum not clawed............................................................................................................................................66. Leaf blade abaxially pubescent; ligule villous; calyx lemon-yellow ............................................................................. M. verrucosa- Leaf blade abaxially glabrous; ligule glabrous with only ciliate margin; calyx pink to scarlet.................................... M. vespertilio7(3). Peduncle at least 150 cm long ................................................................................................................................................ M. celsa- Peduncle less than 40 cm long............................................................................................................................................................88. Leaf sheath prominently reticulate to muriform.................................................................................................................................9- Leaf sheath smooth, striate to finely reticulate.................................................................................................................................109. Leaf blade abaxially pubescent; ligule brown, red or green, densely pubescent with brown hair; anther crest semi-circular to bluntly squared to oblong .............................................................................................................................................. M. muriformis- Leaf blade abaxially glabrous; ligule bright to dark red, glabrous; anther crest trilobed................................................ M. chinensis10(8). Infructescence including peduncle 25–35 cm long ..........................................................................................................................11- Infructescence including peduncle not more than 20 cm long.........................................................................................................1211. Inflorescence globose, with gelatinous mucilage; fruit with straight spines............................................................ M. elephantorum- Inflorescence cylindrical, without gelatinous mucilage; fruit with curved or hooked spines ..................................... M. gagnepainii12(10). Ligule glabrous; fruit green or red ...................................................................................................................................................13- Ligule tomentose; fruit red ...............................................................................................................................................................1413. Leaf blade abaxially with hairy primary veins, with caudate apex to 2 cm; fruit green ............................................ M. echinocarpa- Leaf blade glabrous on both sides, with caudate apex to 4 cm; fruit red .......................................................................... M. caudata14(12). Labellum bifid; fruit with branched spines ............................................................................................................. M. stephanocolea- Labellum trilobed; fruit with simple spines..................................................................................................................... M. calcarata