Monographs Details: Metrodorea maracasana Kaastra
Authority: Kaastra, Roelof C. 1982. A monograph of the Pilocarpinae (Rutaceae). Fl. Neotrop. Monogr. 33: 1-198. (Published by NYBG Press)
Family:Rutaceae
Description:Species Description - Tree 5-12 m tall, with trunk to 25 cm in diam.; branchlets 2-6 mm in diam., grayish-brown, somewhat shining, lenticels roundish or spindle-shaped ca. 0.3-1mm, glabrous. Leaves 1-foliolate with ± sessile leaflet, glabrous; sheath 4-7 mm long, ciliate with hairs ca. 0.5 mm long; petiole semiterete, widely shallowly canaliculate, 1-15 mm long and ca. 1-2 mm thick; leaflet blade elliptic or obovate, 5-14 × 2.9-7 cm, shortly attenuate or narrowly subcuneate at base, obtuse or emarginate at apex, margin revolute, coriaceous, grayish-green on both sides, shining, venation prominulous below, midvein impressed. Inflorescences terminal, widely paniculate, about as long as the leaves, 3-9 × 4-10 cm, with stocky branchlets, densely flowered, pubescent with spreading hairs 0.1-0.2 mm long, the lowermost pair of side-branchlets subtended by the upper pair of leaves; the upper bracts ovate or triangular, to 4 × 2 mm, glabrous above, pubescent below with spreading hairs 0.1 mm long; pedicels to 2 × 0.5 mm; bractlets 2, alternate or subopposite. Flowers ca. 6-7 mm in diam., perfumed; calyx lobes (sub)quincuncial, connate and overlapping at base, depressedly ovate, 0.71.2 × 1-1.5 mm, slightly acuminate and obtuse at very tip, or obtuse, glabrous above, minutely pubescent below with hairs 0.05-0.1 mm long, parallel-nerved, the nerves branching towards the tip, the pseudocosta indistinct; petals subquincuncial to subvalvate, adnate to the disc at base, reflexed, elliptic, 2.7-3 × 1.2-1.4 mm, postflorally up to 3.6 × 1.5 mm, unguiculate with claw ±0.5 mm acutish at tip, coriaceous, in age becoming thinly so or semitransparent with membranaceous margin, yellowish white, minutely pubescent on both sides with hairs 0.1 mm long; filaments 1.3-1.7 mm long and 0.2-0.3 mm thick, with same color as petals; anthers heart-shaped ca. 0.5-0.6 × 0.5-0.6 mm, purplish; disc in upper half 5-10-lobed, longer than ovary, 0.6-0.8 mm high, ca. 0.4 mm thick at tip, 1.2-1.5 mm in diam., becoming dark-colored in age, smooth except for a few tubercles 0.05 mm; carpels deeply immersed into disc, ca. 0.3-0.5 mm high, glabrous, charged with sometimes ± confluent tubercles to 0.3 mm long, postflorally developing apical apophyses ca. 1.5 mm high and 1 mm thick, charged with internal glands along the margin; style ca. 0.8 mm long and 0.2-0.3 mm thick, projecting ca. 0.3-0.4 mm beyond the tubercles of the ovary, glabrous; stigma capitate, 0.10.2 × 0.3 mm, dark. Fruits (nearly mature) depressedly globose, stellately-lobed, 18-20 × 20-30 mm, loculi provided with a dorsal apophysis 3-7 mm half-way to the tip, transversely wrinkled with prominent parallel nerves on both sides of the wall, muricate-tuberculate, the tubercles to 2 mm.

Discussion:This species superficially resembles Metrodorea stipularis but the petioles are partly free and the leaflets are uniformly 1-foliolate.

The lobed (not partite) disc and the deeply immersed ovary which develops well-sized apophyses are distinct characters of this species. There is some resemblance with M. nigra, but the inflorescence is more stocky with thicker peduncles, the flowers are a different color, and the leaves are more rigid; M. nigra has usually longer petioles than M. maracasana.
Distribution:Brazil South America| Bahia Brazil South America|