Tibouchina trichopoda ( Candolle 1828: 151 ) Baillon (1879: 75)

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 : 86

7.6. Tibouchina trichopoda ( Candolle 1828: 151) Baillon (1879: 75) . [ Figs. 3z , 10l–u ]

Shrubs or treelets 1.5–4 m; indumentum of the branch, petioles and inflorescences sparse or moderately appressedhirtellous. Branches flattened when young, the adults tetragonal, costate, not winged. Petioles 0.8–1.3 cm long; blade 5.7–7.1 × 1.9–2.9 cm, chartaceous, elliptic, base abtuse, apex acute, margin entire; adaxial surface appressedstrigulose, trichomes basally thickened and 1–2-branched, branches connate to the epiderm, abaxial surface sericeo; acrodromous basal veins 3–5, the marginal not diverging from the inner, appressed-hirtellous at abaxial surface. Triads or corymbiform metabotryoids 5.6–6.5 cm long; bracts 11–13 × 5–7 mm, bracteoles 12–13 × 8–11 mm, both involucral, concave, caducous. Pedicel 4–9 mm long; hypanthium 4–5.1 × 5–5.5 mm, campanulate, densely strigulose; calyx with lobes 3–4.5 × 2.5–3.8 mm, triangular, margin ciliolate, strigulose in abaxial surface, caducous; petals 25–29 × 11–23 mm, purple, apex rounded-apiculate; stamens with filaments basally glandular-pubescent, anthers purple, falciform, connective with appendage bilobed, antesepalous with filaments 13–14 mm long, anthers 8–10 mm long, connective 3.8–4 mm prolonged, antepetalous with filaments 10–11 mm long, anthers 8–9 long, connective 0.8–0.9 mm prolonged; ovary 3.2–6 × 4–5 mm, densely sericeo; style 20–26 mm long, glabrous. Velatidium 6.5–9 × 8–9 mm; seeds 0.6–1 × 0.1–0.3 mm.

Specimens examined:— 23.II.2008, fl., K.C. Silva 25 (RB, RBR) ; 19.I.2001, fl., L.F.T. Menezes 743 (RBR) , 18.XII. 2010, fl., fr., K. C. Silva 106 (RBR) .

Additional specimen examined:— BRASIL. Rio de Janeiro: Silva Jardim , 14.II.2003, fl., fr., B.A. Abbas et al. 85 (RB) .

Distribution:—Endemic to Brazil in the Atlantic Forest Biome, occurring from the state of Minas Gerais to Rio Grande do Sul ( Guimarães 2012).

Comments:—In Marambaia, it is restricted to Shrubby Restinga and Restinga Forest. Tibouchina trichopoda is distinguished by leaves with 3–5 basal acrodromous veins, marginal veins not diverging from the inner ones, appressedstrigulose adaxial surface, and abaxial surface with sericeous blade and appressed-hirtellous acrodromous venation. In addition, involucral and concave bracteoles, and the filaments basally glandular-pubescent also identify this species. Additional illustrations in Cogniaux (1883 –1888), and Baumgratz et al. (2006).

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 10. Tibouchina gaudichaudiana: a. hypanthium and calyx; b–c. antisepalous and antipetalous stamens, respectively; d. bract; e. fruit; f. seeds (a, d. Silva 27; b–c. Souza 152; e–f. Silva 30). Tibouchina heteromalla: g. hypanthium and calyx; h. bract; i–j. antisepalous and antipetalous stamens, respectively; k. fruit (g, i–k. Silva 79; h. Nadruz 2119). Tibouchina trichopoda: l. floriferous branch; m–n. leaf: adaxial and abaxial surfaces, respectively; o. bract; p. bracteole; q. petal; r. calyx lobes; s–t. antisepalous and antipetalous stamens, respectively; u. fruit (Silva 106).