Miconia comptifolia Wurdack (1984: 138-139)

Corrêa, André Luis, Scudeller, Veridiana Vizoni & Goldenberg, Renato, 2017, Melastomataceae in the Reserva de Desenvolvimento Sustentável do Tupé, Amazonas, Brazil, Phytotaxa 323 (2), pp. 101-127 : 116

20. Miconia comptifolia Wurdack (1984: 138-139) . ( Figure 2 E, K ; 3 B .)

Trees ca. 8 m tall. Vertically striate rhytidome. Branches erect, quadrangular, rufous; branches, petioles, leaves abaxial surface, inflorescences, bracts, bracteoles, hypanthium and fruits with dendritic persistent trichomes. Leaves opposite, isophyllous; petioles channelled 3.6–4.2 cm long; leaf blades 24.6–34.2 × 14.6–20.1 cm long, chartaceous, discolored, symmetrical, oval, base attenuate, apex acuminate, margins denticulate, not ciliate, adaxial side glabrous, leaf veins 5, suprabasal; ant domatia present over the leaf base veins on the abaxial surface. Paniculate 14.6–18.2 × 3.6– 3.5 mm, terminal; bracts not seen; bracteoles not seen. Flowers 5-merous; pedicel ca. 0.2 mm long; hypanthium 3.2 mm long, oblong, wrinkled; calyx double, caducous; lacinia triangular; petals ca. 3.2 × 3 mm, white, obovate, symmetrical, apex rounded, base truncate, margins not ciliate, glabrous; stamens 10,isomorphic, anthers ca. 4.2 mm long, white, oblong, straight, apex attenuate, anthers with ventral glands at the base, with 1 apical pore, connective not prolonged, filament 3.7 mm long, with glandular persistent trichomes; ovary ca. 1.8 mm long, superior, 3-locular, with simple trichomes; style 7.4 mm long, straight, glabrous. Berry ca. 6.1 × 4.9–5.5 mm, unripe fruit green, ripe fruit orange; seeds numerous, triangular.

Specimens examined:— BRAZIL. Amazonas, Manaus, RDS-Tupé, 28 April 2013, fr., A.L. Corrêa 219 (EAFM!, HUAM!, INPA!).

Additional specimens examined:— BRAZIL. Amazonas, Manaus, 15 April 2006, fl., F. A. Carvalho 584 ( INPA!).

Distribution and habitat: Endemic to Brazil, in the state of Amazonas ( Goldenberg et al. 2013). In the reserve, it occurs in “terra firme” plateaus over clay soil with low organic matter.

Comments:— This species is not frequent in the reserve. It can be distinghished by the mymecophytism, brown, vertically striate rhytidome and leaves with glabrous adaxial surfaces.

Figures

FIGURE 2. Flower, fruit and bark in species of Melastomataceae in the RDS-Tupé: Flower (A–B).A: Henriettea martiusii; B: Tibouchina fothergillae. Fruit (C–F); C. H. maroniensis; D. Clidemia epibaterium; E. Miconia comptifolia; F. C. capitellata; G. Bellucia spruceana; H. M. longispicata, detail of inflorescence; I. M. rhytidophylla. Patterns and colors of the rhytidome and inner bark; J. M. chrysophylla; K. M. comptifolia; L. M. crassinervia; M. M. dispar; N. M. egensis; O. M. gratissima; P. M. longispicata; Q. M. lourteigiana; R. M. phanerostila; S. M. radulifolia; T. M. regelii; U. M. tomentosa; V. M. umbrosa; W. Tococa coronata; X. Tococa subciliata.

FIGURE 3. Morphological details of Melastomataceae species in RDS-Tupé: A. Adelobotrys marginata, leaf blade (from Corrêa 278); B. Miconia comptifolia, leaf blade with detail of the margins (from Corrêa 219); C. Tococa subciliata, leaf blade with detail of the margins (from Corrêa 112); D. Clidemia epibaterium, leaf blade with of the detail margins (from Corrêa 215); E. C. heteroneura, leaf base (from Corrêa 140); F. C. japurensis, leaf base (from Corrêa 21); G. Henriettea maroniensis, leaf blade and detail of trichomes on the abaxial surface (from Corrêa 139); H. M. poeppigii, leaf blade and detail of trichomes on the abaxial surface (from Corrêa 280); I. M. umbrosa, leaf base and detail of trichomes on the abaxial surface (from Corrêa 81); J. Tibouchina fothergillae, longitudinal section of the ovary, hypathium and calix (from Corrêa 218); K. M. umbrosa, detail of the ovary and style (from Corrêa 81); L. M. gratissima, transverse section of the ovary (from Corrêa 137); M. Aciotis circaeifolia, petal (from Corrêa,21);N. C. epibaterium, petal (from Ribeiro 932); O. Miconia tomentosa, stamen larger (from Corrêa 47); P. Aciotis acuminifolia, fruit (From Corrêa 102); Q. M. rubiginosa, fruit (from Scudeller 1067); R. Miconia phanerostila, seed (from Herb 96); S. M. lourteigiana, arachnoid trichome (from Corrêa 77I); T. M. crassinervia, dendritic trichome (from Corrêa 248) U. M. poeppigii, stellate trichome (from Corrêa 280); V. Adelobotrys marginata, malpighiaceous tricome (from Corrêa 278).