Monographs Details: Mouriri glazioviana Cogn.
Morley, Thomas. 1976. Melastomataceae tribe Memecyleae. Fl. Neotrop. Monogr. 15: 1-295. (Published by NYBG Press
Description:Description - Tree to 10 m high, glabrous except for the inflorescence; young twigs terete to quadrangular or sometimes very narrowly 4-winged. Petioles 1.0-6.0 mm long; blades olive-green to yellow-green when dry, 6.0-18.0 cm long, 2.0-6.2 cm wide, ovate-elliptic to elliptic to elliptic-oblong to oblong to oblong-ovate or these narrow, acuminate to short-acuminate or abruptly so or apiculate or sometimes acute or narrowly so at apex, acute at base with an included angle of 75-110° to rounded, sometimes abruptly attenuate nearly to the base of the petiole; midrib plane to slightly rounded above or sometimes slightly grooved toward the apex, prominent below, rounded at base or for up to 1/4 of the blade length, becoming 2-angled or sometimes very narrowly 2-winged for the rest of its length, the wings sometimes obsolete at maturity; lateral nerves invisible or faintly visible above, invisible to prominent below when dry; margins sometimes slightly revolute. Midrib xylem tubular; stomatal crypts Type III, averaging in a leaf ca 30-55 µ in diam, 29-50 µ high, 49-150 per sq mm (extreme 20-75 µ diam, 26-53 µ high, 48-180 per sq mm); upper epidermis varying irregularly from one to two cells thick in the same leaf, with mucilaginous walls occasional to frequent in the cells contacting the palisade; hypodermis mostly none, sometimes present near the midrib and interrupted elsewhere; free stone cells present only in petiole; terminal sclereids filiform, extending from epidermis to epidermis and running next to them for a short distance and usually branching before terminating, sometimes penetrating between the epidermal cells. Inflorescences axillary and at leafless nodes of twigs to 6.0 mm thick, 1-several per side, each 1-5-flowered, 2.0-12.2 mm long to base of farthest pedicel measuring along the axes and with 1-3 internodes in that length; bracts 1.0-2.4 mm long, ovate to triangular, acute to short-acuminate, present at or deciduous prior to anthesis. Pedicels, upper free hypanthium, calyx lobes, and sometimes the lower free hypanthium, axes of the inflorescence, and bracts minutely puberulent. True pedicels 2.0-11.0 mm long; calyx including inferior ovary 4.8-8.5 mm long, obconic to campanulate and unconstricted to prominently constricted at the top of the ovary when dry, campanulate and slightly to moderately constricted when fresh, the convexity of the ovary, truncation of its base, and constriction of its apex more or less correlated with the number of ovules within, the ovary often slightly 5-gibbous; free hypanthium 1.8-3-4 mm long; calyx lobes just before anthesis 0.8-2.0 mm long, 1.6-3.2 mm wide, 1.2-2.6 mm long from the stamen attachment, triangular with inverse-curved sides to broadly rounded and abruptly apiculate, sometimes with a small external thickened vertical ridge at the apex which becomes more prominent after anthesis, the calyx splitting between the lobes at anthesis for 0-0.8 mm, this distance increased to 1.2 mm by stretching during fruit formation. Petals rose to white, 5.0-10.0 mm long, 3.2-8.0 mm wide, elliptic or ovate-elliptic to broadly so or subrotund, acute or abruptly so to obtuse at the apex, with a basal claw up to 1.3 mm long and wide, the lower margin erose. Antesepalous filaments 5.0-6.5 mm long, antepetalous ones 7.5-9.0 mm long; anthers yellow, 2.4-4.2 mm long; sporangia 2.2-3.8 mm long, dehiscing by apical slits which continue closed downward; gland 0.3-1.1 mm long, 1.8-2.8 mm from apex of anther when measured from center of gland; cauda 0.5-1.0 mm long. Ovary 2-5-locular; placentae basal to axile-basal in each locule, the ovules borne on all sides of a short column or when only 3 produced only outwardly, 3-8 per locule, 8-28 in all; style 11.0-13.0 mm long. Ripe fruit black (Ducke sn, MG 1471), l-2(-3)-seeded, globose when 1-seeded, wider than high and slightly lobed according to the number of seeds when seeds more than 1, crowned with the hypanthium and often some calyx lobes, the hypanthium often brought to within 90° of the pedicel through unequal development of the ovules, the fruit estimated 14-20 mm high excluding hypanthium and 14-24 mm wide when dry, estimated 17-25 mm high and 17-30 mm wide when fresh. Seeds brown, irregularly spheroid when 1, slightly flattened on the contact faces when more than 1, 10.2-12.7 mm high, 10.2-11.1 mm wide, 7.9-9.6 mm thick, with a roundish or broadly elliptic basal hilum 4.0-5.0 mm in diam.
Discussion:Variability in M. glazioviana is greater than in most species of Mouriri, especially in size of parts and in ovary structure. The anther sporangia for example vary from 2.2-3.8 mm long, whereas for instance in the much more widespread species M. guianensis the sporangia range only from 1.7-2.3 mm long. The ovary locules vary from 2-5, and the ovules from 8-28, an unusually great range, and the altered placentation in those locules containing but three ovules (see description) is most unusual. There is at present, however, no apparent basis for a further subdivision of the species. The scanty habitat data suggest that the plants grow under very diverse conditions, which may relate to the morphological variability. The type collection is unusually small in its dimensions, excluding the Paris specimen, and does not represent a norm for the species.The lack of truly distinctive morphological features, other than the typical placentation and the often-present constriction above the ovary, requires a resort to anatomical characters for certainty of identification. When the plants are in fruit there may remain some question as to their identity, as in the case of Ducke sn, MG 1471, which comes from a locality well removed from the rest of the range, and in which the stomatal crypts are relatively shallow, with rounded roofs, and with very prominent circular ridges around the opening.
Ceará Brazil South America
| Goiás Brazil South America
| Minas Gerais Brazil South America
| São Paulo Brazil South America
Common Names:Manipula, goiabeira do matto, pitanga brava