Renanthera isosepala Holttum 1965
Photo by Jay Pfahl
Photo courtesy of David Jubineau
Common Name The Three Equal Sepal Renanthera
Flower Size .88" [2.2 cm]
Found in Thailand and Sabah, Borneo in swamp forest, coastal forests on peat soils to calcareous coastal sands at elevations below 50 meters and needs a lot of light to bloom as a giant sized, hot growing terrestrial or epiphyte climbing to the tops of the stunted trees to get full sun. This species has a simple or occasionally branching stem carrying ligulate, unequally bilobed apicallly, coriaceous, articulated to the purple spotted sheath below that blooms in the summer on a many flowered, 2' [60 cm] long, 3 to 4 branched inflorescence with ovate, acute floral bracts.
References W3 Tropicos, Kew Monocot list , IPNI ; The Orchids of Thailand Seidenfaden & Smitinand 1963 Fig 445 pg 594 as R matutina TYPE drawing fide; *The Orchids of Thailand Seidenfaden & Smitinand 1965 corrections; Beautiful Thai Orchid Species Kamemoto & Sagarik 1975 photo ok; Die Orchideen lieferung 19/20 Schlechter/Brieger 1988; Opera Botanica #95 Seidenfaden 1988 drawing fide; Thai Orchid Species Rakpaibulsombat 1992 photo ok; Orchids of Borneo Vol 1 Chan, Lamb, Shim & Wood 1994 drawing/photo fide; A Checklist of the Orchids of Borneo Wood & Cribb 1994; A field Guide to the Wild Orchids of Thailand Vaddhanaphuti 2005 photo ok;
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