Henriettea maroniensis Sagot (1883: 330)

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 : 113

14. Henriettea maroniensis Sagot (1883: 330) . ( Figure 2 C ; 3 G .)

Small tree 2.8–3.1 m tall. Dark gray rhytidome. Branches erect, cylindrical, not winged, grayish; branches, leave adaxial side and fruits with simple persistent trichomes; petioles, leaves abaxial surface, hypanthium with stellate-stipitate. Leaves opposite isophyllous; petioles slightly channeled 2–2.8 cm long; leaf blades 19.7–27.4 × 8.1–13.7 cm, chartaceous, discolored, symmetrical, elliptical or obovate, base acute, apex slightly cuspidate, margins entire and ciliate, leaf veins 5, suprabasal; ant domatia absent. Flowers axillary, with a maximum of 3 flowers; bracts absent; bracteoles 3.3–7.7 mm long. Flowers 5-merous; pedicel 3.1–3.9 mm long; hypanthium 8.4 mm long, campanulate, smooth; calyx simple, persistent; lacinia ovate; petals 13.1–13.7 × 11.8–12.8 mm, white, rhombic, symmetrical, apex acuminate, base attenuate, margins not ciliate, glabrous; stamens10, isomorphic, anthers 9–10.2 mm long, lanceolate, curved, apex attenuate, 1 subapical pore, connective not prolonged, filament 7–10.6 mm long glabrous; ovary 2.7–3.5 mm long, inferior, placentation axillary intrusive, 4-locular; style ca. 20.4 mm long, curved, with simple persistent trichomes. Berry ca. 16.3 × 14.8 mm, unripe fruit green, ripe fruit salmon; seeds numerous, ovoid.

Specimens examined:— BRASIL. Amazonas , Manaus, RDS-Tupé, 31 January. 2013, fl., fr., A. L. Corrêa 139 ( EAFM!, HUAM!, INPA!) ; 01 February 2013, fl.,fr., A. L. Corrêa 151 ( EAFM!, HUAM!, INPA!) ; 02 March 2013, fl., fr., A. L. Corrêa 190 ( EAFM!, HUAM!, INPA!) .

Distribution and habitat:— Colombia, Guyana, Suriname, Venezuela ( Berry et al. 2001). In Brazil it occurs only in Amazonian forests (Baumgratz 2015). In the reserve, it occurs in “campinarana”, on soils with a lot of organic matter.

Comments:— This species is frequent in the “campinarana”. It can be distinguished by combination of the dark gray rhytidome and pentamerous flowers.

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).