Leandra reversa ( Candolle 1828: 161 ) Cogniaux (1886: 198–199)

Silva-Gonçalves, Kelly Cristina Da, Baumgratz, José Fernando A. & Nunes-Freitas, André Felippe, 2014, Melastomataceae in a continental Atlantic Forest island from southeastern Brazil, Phytotaxa 183 (2), pp. 61-92 : 71-72

3.3. Leandra reversa ( Candolle 1828: 161) Cogniaux (1886: 198–199) . [ Figs. 3e , 5m –q ]

Shrubs 0.5–1.7 m; indumentum of the branches, petioles and inflorescences purple-blue, moderately to densely glandular-hirtellous, glandular head very early-caducous. Petioles 2.9–4 cm long; blade 10.9–16.5 × 6.3–8.8 cm, membranaceous or papiraceous, ovate or elliptic, base rounded, apex acute-acuminate, margin denticulate, ciliolate; indumentum rose at the margin, sparsely or densely setose; acrodromous basal veins 5–7, the inner 3–5 mm suprabasal. Thyrsoids of scorpioid cymes 7.2–13.2 cm long; bracts 0.7–0.8 × 0.4–0.5 mm, bracteoles 0.4–0.5 × 0.1–0.2 mm, both triangular-acuminate. Flowers 5-merous, pedicelate; hypanthium 2.3–4 × 2.5–4 mm, campanulate, glandular-setulose; inner torus glandular-setulose or glabrous; calyx with external lobes 1.3–1.5 × 0.1–0.2 mm, narrowly triangular, the internal lobes 1–1.2 × 1.1–1.7 mm, triangular, both glandular-setulose; petals 3.7–3.9 x 0.6–0.7 mm, white-vinaceous, linear; stamens with filaments 2.5–5.5 mm long, anthers 1.5–4.8 mm long, yellow, straight, connective inconspicuously prolonged, appendage calcarate; ovary 1.5–3.3 × 1.6–2 mm, 1/3-inferior, 5-celled, apex pilose; style 5.5–11 mm long. Bacidium 5.9–6.1 × 5–5.7 mm, purple, subglobose, glandular-setulose; seeds 0.5–0.6 × 0.1–0.2 mm, ovateobtriangular, testa granulose.

Specimen examined:— 15.V.2010, fr., K.C. Silva & F.S. Gonçalves 98 (RBR) .

Additional specimen examined:— BRASIL. Rio de Janeiro: Vista Chinesa , 10.I.1999, fl., R. Bacellar et al. 17 (RB); Silva Jardim, 22.VIII.2001, fl., S.V.A. Pessoa & B.A. Abbas 1054 (RB) .

Distribution:—It occurs from the state of Minas Gerais to Santa Catarina, in Cerrado and Atlantic Forest formations ( Souza & Baumgratz 2012a). According to Wurdack (1962) the occurrence of this species in Bolivia, Peru, and the state of Piauí, in Brazil, is doubtful.

Comments:—This is the first record for Marambaia, where the species is restricted to Dense Submontane Ombrophilous Forest in very wet areas at approx. 641 m. It can also be distinguished by the indumentum of the branches, petioles and inflorescences glandular-hirtellous, the foliar margin with rose indumentum, and white-vinaceous petals. Additional illustrations in Baumgratz et al. (2006), Souza & Baumgratz (2009), and Camargo et al. (2009).

Figures

FIGURE 3. Clidemia hirta (L.) D.Don: a. flower and fruit. Clidemia urceolata: b. flower. Huberia ovalifolia: c. flower; d. fruits. Leandra reversa: e. inflorescence. Marcetia taxifolia: f. flowers. Miconia albicans: g. fruits and floral buds. Miconia calvescens: h. flowers. Miconia chartacea: i. leaves. Miconia cinnamomifolia: j. branches with interpetiolar pseudo-stipules; k. fruits. Miconia cubatanensis: l. inflorescence. Miconia dodecandra: m. fruits. Miconia prasina: n. inflorescence. Miconia pusilliflora: o. inflorescence. Ossaea marginata: p. flowers; q. fruit. Tibouchina corymbosa: r. fruits. Tibouchina estrellensis: s. flower. Tibouchina gaudichaudiana: t. flower; u. fruit. Tibouchina granulosa: v. flower. Tibouchina heteromalla: x. flower. Tibouchina trichopoda: z. flower.

FIGURE 5. Leandra acutiflora: a. leaf:abaxial surface; b.calyx; c. petal (Lima & Silva s.n. RB 44251).Leandra variabilis: d.leaf:abaxial surface; e–f. leaf: adaxial and abaxial surfaces, respectively; g. hypanthium and calyx; h. petal (Neto 1506). Leandra melastomoides: i. leaves; j. floral involucre and flower; k. petal; l. bract: adaxial surface (Baumgratz 1073). Leandra reversa: m. floriferous branch; n. petal; o. calyx lobe; p. young fruit; q. seed (m–o. Pessoa & Abbas 1054; n. Bacellar et al. 17; p. Luchiari 715; q. Brade 1433).