Monographs Details: Votomita orbinaxia Morley
Authority: Morley, Thomas. 1976. Melastomataceae tribe Memecyleae. Fl. Neotrop. Monogr. 15: 1-295. (Published by NYBG Press)
Family:Melastomataceae
Description:Latin Diagnosis - Arbor glabra mediocris; ramuli juvenes teretes. Petioli 4.0-7.0 mm longi; laminae 6.1-7.7 cm longae, 3.2-4.6 cm latae, ovato-ellipticae, apice abrupte acuto, basi rotundata usqe acuta angulo incluso 100°, attenuata in petiolo; superficies costae mediae plana, pagina inferior prominens ad basim, rotundata vel plerumque 2-angulata demissa, complanascens cum pagina folii ca ½ distantiae versus apicem; nervi secundarii non maniresti in sicco. Cryptae stomatatae 40-100 µ diametris, 40-75 µ altae, 24-33 in mm2, unaquaeque cavitatibus 1-6; sclerides terminales foliariae columnares. Inflorescentiae l(-2?) ad axillas foliorum, singulae 2-3-florae, non ramosae, pedúnculo 6.0-21.0 mm longo cum internodio 1; bracteae ignotae, deciduae ante anthesin; pedicelli 7.0-10.0 mm longi. Calyx ovarium inferior includens 5.0-5.6 mm longus, campanulato-obconi-cus; hypanthium liberum nullum; lobi calycis connati, cupulam truncatam 1.7-2.0 mm profundam facientes, interdum acuminiculis 0.1 mm longis notati. Petala rosea, 6.5-9.0 mm longa, 3.6-4.1 mm lata, ovata, acuminata. Stamina 5.4-6.1 mm longa; filamenta 1.7-2.0 mm longa; antherae 3.6-4.2 mm longae; thecae 1.7-2.3 mm longae, rimis longitudinaliter dehiscentes; glándula apicalis 0.6-0.8 mm longa. Ovarium 4-locu-lare; placentae axiales; ovula 9 undique circum quamque placentam genita, in recta verticilla; stylus 6.0-6.5 mm longus basi cónica exclusa, deciduus. Fructus ignotus.

Description - Stomatal crypts averaging in a leaf ca 67 m in diam, 57 µ high, 28 per sq mm (extremes given above); upper epidermis two cells thick, the upper layer of cells usually two for each of the inner ones as seen in section; mucilaginous walls none; hypodermis none; terminal-type sclereids columnar, branching at both epidermises, sometimes visibly attached to vein endings but mostly not so.

Discussion:The epithet refers to the position of the whorl of ovules on the axis of the ovary.The new species is distinguished from all other New World Memecyleae by its placentation, in which a whorl of ovules in each locule is attached to the central axis in a vertical position. From the only other species of Votomita with more than 1 locule in the ovary, V. plerocarpa and V. monadelpha, V. orbinaxia differs also in having a glabrous unwinged under midrib, separate stamens, and smaller flowers.
Distribution:Brazil South America| ParĂ¡ Brazil South America|