Monographs Details: Leandra chimantensis 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 - L. procumbenti Ule affinis sed foliis proportionaliter vix angustioribus ramorum et foliorum subtus pilis barbellatis inflorescentiis hypanthiisque densiuscule glanduloso-setulosis. Rami teretes basim versus radicantes novelli petiolis inflorescentiisque modice vel dense setulosi pilis flexuosis remote barbellatis vetustiores glabrati. Petioli 4-7 mm; lamina 2-5 X 1.2-2.5 cm elliptica apice late acuta vel anguste obtusa basi rotundata rigida, supra primum in nervis primariis sparsissime barbellatosetulosa mox glabrata, subtus in nervis primariis secundariisque primum sparse barbellato-setulosa demum glabrata, 3-nervata (jugo exteriori inframarginali tenui neglecto) nervis nervulisque supra anguste impressis subtus vix elevatoreticulatis, apicem versus remote ciliolato-serrulata. Panicula 2-6 cm longa oblonga pauciflora sparse setis i.s. nigris glanduliferis ca. 1 mm longis obsita; flores 4-meri plerumque 0.5-3 mm pedicellati; bracteolae 1 X 0.2-0.3 mm lanceolatae setulosae ad hypanthii basim insertae persistentes. Hypanthium (ad torum) 2 mm longum sparse vel modice barbellato-setulosum et sparse glandulososetulosum; calycis tubus 0.1 mm longus, lobis interioribus 0.5 mm longis ovatis apice obtusis sparse ciliolatis, dentibus exterioribus crassiusculis setuliferis interiores aequantibus. Petala 3.5 x 1.4 mm oblongo-lanceolata apice acuta et mucronulata glabra. Filamenta i.s. 2 mm longa glabra; antherarum thecae i.s. 2.2 mm longae oblongae minute porosae, connectivo non prolongato sed dorsaliter ad basim per 0.5 mm crasse elevato. Stylus 5.5 X 0.3-0.2 mm; stigma vix ex pansum 0.25 mm diam; ovarium 3-loculare 1/2-inf erum glabrum apice in collum 0.3 mm altum circum stylum protractum. Semina pyramidata 1.1 X 0.6 mm laevia.

Discussion:

Type. Leaves dark green above, pale green below, coriaceous, the veins finely and deeply impressed above, hypanthium deep maroon, petals and filaments rose, fruit blue, climbing in zanjones bordering rocky savanna above Upper Falls, between meanders of west branch of Rio Tirica headwaters, central section, Chimanta Massif, Edo. Bolivar, Venezuela, elev. 2150 m, 17 Feb 1955, J. A. Steyermark & J. J. Wurdack 924 (holotype U S 2342410). Paratypes. VENEZUELA, Edo. Bolivar. Chimanta Massif: Torono-tepui, alt. 2150-2180 m, Steyermark & Wurdack 645, 1051 p.p.; Apacara-tepui, alt. 2150-2200 m, Steyermark 75909.

L. procumbens has ovate-elliptic leaf blades with five distinctly developed primary nerves (the outer pair plainly visible on the upper surface and 1-1.5 mm from the margins), as well as eglandular non-barbellate hairs throughout; originally known only from Roraima, the species also occurs on Chimanta-tepui (Steyermark & Wurdack 1051 p.p.), growing in the same crevasses as L. chimantensis. Ule assigned L. procumbens to Sect. Tschudya but certainly the seeds of L. chimantensis, as well as Gleason's notebook comments on his dissection of the Kew sheet of Ule 8689, indicate that the two relatives belong elsewhere in the genus. Both species suggest affinity with L. itatiaiae Cogn. and other 5-merous Brazilian species in Sect. Chaetodon.