Rinorea ramiziana Glaz. ex Hekking
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Authority
Hekking, W. H. A. 1988. violaceae Part l—Rinorea and Rinoreocarpus. Fl. Neotrop. Monogr. 46: i-ii, 1-208. (Published by NYBG Press)
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Family
Violaceae
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Scientific Name
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Type
Type. Brazil. Rio de Janeiro: Campos nr. Itaca, Apr-May 1881 (fl), Glaziou 12425 (holotype, P [herb. Glaziou]); isotypes, C [herb. Warming], K [herb. Benthamianum], LE, P).
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Synonyms
Alsodeia ramiziana Glaz.
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Description
Species Description - Treelet 3-5 m tall. Branchlets glabrous, por-phyreous when dried. Leaves alternate, congested near the apex of the branchlets; petioles 1.55 mm long, minutely pilosulous above, glabrous beneath; stipules deciduous, deltoid, ca. 2 x ca. 1 mm, herbaceous, hispid(ulous) along the costa, margin glabrescent, apex subacute; lamina narrowly elliptic to obovate, 5-13 x 2-5.5 cm, papery to coriaceous; lamina, costa and lateral veins glabrous on both sides; lateral veins (8-)l 1-16 pairs; tertiary venation reticulate; base rounded to cuneate, sometimes slightly oblique and rounded at the petiole; margin subentire, slightly thickened, mucronulate; acumen hardly differentiated, apex obtuse to (sub)acute, mucronulate. Inflorescences, axillary, lateral and subterminal, solitary or 2-fasciculate, congested near the apex of the branchlets, thyrsoid, laxiflorous 5-10 x 1-2 cm; central axis sparsely pilosulous to glabrescent; cymules 1-3 flowered, sometimes accompanied by 1-5 juvenile flower buds or undeveloped flowers; common peduncles 1.25-3 mm long, sparsely pilosulous; ‘pedicels’ 1.25-2 mm long, usually articulate at 1/3 from the base, sparsely pilosulous; bracts and bractlets subequal, ovate to deltoid, 0.75-1 x 0.5-0.75 mm, herbaceous, margin scarious, ciliolate, apex subacute, mucronulate. Flower buds ovoid to conical, subacute. Sepals subequal, deltoid to ovate, ca. 1.75 x 1.25-1.5 mm, herbaceous, margin scarious and ciliolate, apex subobtuse to acute, mucronulate. Petals narrowly ovate, acuminate, 4.75-5.25 x 1.5-1.75 mm, herbaceous, pilosulous at the apex, margin not ciliolate, apex subobtuse to subacute. Stamens subsessile, ca. 3.25 mm long; filaments and dorsal glands fused to a tube; filamental tube 0.1-0.2 mm high, glabrous; anthers narrowly elliptic to ovate, ca. 2 x ca. 0.75 mm, thecae mucronate; connective outside, narrowly deltoid, subacute, ca. 0.75 x 0.1-0.2 mm, glabrous, sometimes whitish villose along the apical margin; connective scales lateral as well as apical, ovate, ca. 3 x ca. 1 mm, scarious, brownish, densely whitish villose outside, margin erose, apex obtuse and suberose. Ovary ovoid, ca. 1.25 x ca. 0.75 mm, whitish pilose to villose;ovules one per placenta, each inserted at the base of the placenta. Style filiform, subclavate near the apex, erect, ca. 2.5 mm long, exceeding the stamens by ca. 0.5 mm, glabrous, pilosulous near the base; stigma truncate. Capsule slightly asymmetric elliptic to orbicular, acuminate, subtended by subpersistent floral parts, coriaceous, sparsely pilose, veined; valves three, unequal to subequal, ca. 10 x 4.5-7 mm, with the style often subpersistent at the apex of one of the valves. Seeds one per valve, subglobose, 4 x 5 mm, glabrous.
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Discussion
Rinorea ramiziana differs from R. maximiliani and R. laevigata by: (1) thyrsoid inflorescences versus (pseudo)racemose in the latter two; (2) the ‘pedicels’ and the style shorter than 3 mm.
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Distribution
Flowering specimens have been collected in April and May, fruiting specimens only in May. Known only from the Atlantic coastal region of SE Brazil, including the following forest refugia: (a) Rio de Janeiro-North and (b) Alegre, in tropical rain as well as savanna forests.
Brazil South America| Espirito Santo Brazil South America| Rio de Janeiro Brazil South America|