Monographs Details: Leandra neblinensis Wurdack
Authority: Maguire, Bassett & Wurdack, John J. 1964. The botany of the Guayana Highland--Part V. Mem. New York Bot. Gard. 10: 1-278.
Family:Melastomataceae
Description:Latin Diagnosis - Sect. Secundiflorae. L. sanguineae Gleas. affinis sed inflorescentiis hypanthiisque dense glanduloso-setosis petalis staminibusque maioribus. Ramuli petiolique dense setosi pilis i.s. nigrescentibus vix incurvis 2-4 mm longis. Petioli 1-3.5 cm; lamina 9-20 X 5-13.5 cm elliptica apice breviter (0.5-2 cm) hebeti-acuminata basi rotundata membranacea, supra modice strigosa pilis 2-3 mm longis, subtus in venis dense setosa in superficie modice setosa pilis gracilibus flexuosis, 5-7-nervata ad margines crenulato-serrulata. Panicula 15 cm longa oblongo-pyramidata dense glanduloso-setosa pilis plerumque 1-2 mm longis ramis divaricatis usque ad 7 cm longis; flores 5-meri sessiles ad basim bracteolati, bracteolis 1-1.5 mm longis oblongis setulosis. Hypanthium (ad torum) 3 mm longum dense glanduloso-setulosum pilis ad 2 m m longis; calycis tubus 0.1 mm longus, lobis interioribus 0.2-0.3 mm altis triangulari-rotundatis glabris, dentibus exterioribus lineari-oblongis 0.5 mm longis extus glanduloso-setulosis. Petala 3.5-4 X 1.2-1.8 mm oblongo-ovata acuta. Stamina isomorphica; filamenta 2 mm longa; antherarum thecae 2 mm longae anguste oblongae minute porosae, connectivo non prolongato exappendiculato. Stylus 5-5.5 X 0.3 mm; stigma subcapitellatum 0.4 mm diam; ovarium 3-loculare 2/3-inferum apice in collum modice glanduloso-setulosum 0.4 mm altum protractum.

Discussion:

Type. Shrub 1-1.5 m, inflorescence hairs reddish, petals pale pink, anthers yellow, occasional in Clusia scrub forest just south of Camp 3, slopes of Cerro de la Neblina, Terr. Amazonas, Venezuela, alt. 700 m, 14—16 Nov 1957, Bassett Maguire, John J. Wurdack, & Celia K. Maguire 42077 (holotype US 2342603).

L. sanguinea has eglandular inflorescence and hypanthium hairs, petals 2.5-3 X 0.4-0.7 mm, and anthers 1-1.5 mm long. All of the secundiflorous 5-merous species (several of which are dubiously distinct) with an aspect similar to L. sanguinea and L. neblinensis have 5-celled ovaries. These include L. longicoma Cogn. (ovary glabrous; Asplund 14369, Haught 1840), L. dichotoma (Don) Cogn. (ovary glandular-setulose), L. granatensis Gleas. (ovary glandular-setulose; Haught 1311), L. grandifolia Cogn. (ovary sparsely glandular-setulose; Donnell Smith 6557, Tonduz 9012), L. reversa (DC.) Cogn. (ovary glandular-setulose; Ule 908), and L. francavillana Cogn. (vide infra). Cogniaux' descriptions are at variance with some of the above-cited ovary details, as well as for L. retropila Cogn. (ovary 5-celled, glabrous; Camp E-1419, Killip & Smith 22672); for each collection cited by me, several ovary dissections are represented. I have seen no material of L. agrestis (Aubl.) Raddi, apparently a rare French Guiana endemic with (fide Cogniaux) a glabrous 3-locular ovary; from the Macbride photograph (36220), the leaves are very thin, sparsely pubescent, and with notably crenulate margins.