Recordoxylon

Taxonomy

Recordoxylon W.A. Ducke Trop. Woods 39: 16. 1 Sep 1934.

Subfamily: Caesalpinioideae.
Phylogenetic Number: 1.1.11.
Tribe: Caesalpinieae.
Group: Peltophorum.
Species Studied - Species in Genus: 1 studied; 2 in genus.

Description

Fruit: A legumelegume:
usually dry, dehiscent fruit derived from a single carpel that opens along two longitudinal sutures
; unilocular; 6–17 cm long; 1.5–3 cm wide; 0.2–0.3 cm thick; 2–9 times longer than wide; with deciduous androecial sheath; with deciduous corolla; with deciduous calyx; without orifice formed by curving of fruit or fruit segments; straight to curved; not plicate; not twisted; symmetrical; oblong; not inflated; flattened; without beak; long tapered at apex to tapered at apex; aligned with longitudinal axis of fruit; tapered at base; aligned with longitudinal axis of fruit; with the apex and base uniform in texture; coriaceous to ligneous; seed chambers externally visible; margin constricted, or not constricted; margin without sulcus; margin embellished; margin with wing(s); wing(s) present; wing(s) 1; wing(s) 0.1–3 mm wide; wing(s) sutural; wing(s) on 1 suture; stipitate to substipitate; with the stipe 10 mm long; with all layers dehiscing; splitting along suture(s). Dehiscence of valves along both sutures; passive. Replum invisible. Epicarp dull; monochrome; brown (dark); with surface texture uniform; glabrous; eglandular; without spines; not smooth; with elevated features; veined; transversely veined relative to fruit length; not tuberculate; not exfoliating; without cracks; without embedded tissue, much thicker than epicarp, running from base to apex. Mesocarp absent. Endocarp present; visible; dull; opaque; monochrome; straw colored to tan; without adhering pieces of testa; nonseptate; not exfoliating; entire. Seed(s) 2–7; length transverse to fruit length; neither overlapping nor touching; in 1 series. Funiculus 0.1–4 mm long; of 1 length only; flattened; straight to plicate. Aril absent.

Seed: 12–15 mm long; 7–14 mm wide; 1–2 mm thick; not overgrown; not angular; asymmetrical; D-shaped to reniform; flattened; with surface smooth; without visible radicle and cotyledon lobes; without hilar sinus; without umbo on seed faces; without medial ridge on each face. Cuticle not exfoliating; not inflated; not wrinkled. Testa present; without pieces of adhering epicarp; not adhering to endocarp; free from endocarp; glossy; not modified by a bloom; colored; monochrome; brown; glabrous; not smooth; with elevated features, or recessed features; rugose; pitted with small separate pits; coriaceous. Pleurogram absent. Pseudopleurogram absent. Fracture lines absent. Rim absent. Wing(s) absent. Raphe visible. Hilum present; fully concealed; concealed by funicular remnant; without faboid split; larger than punctiform; 0.1–1 mm long; with curved outline; elliptic; apical according to radicle tip but marginal according to seed length; recessed; not within corona, halo, or rim. Lens not discernible. Endosperm absent. Cotyledons smooth; both outer faces convex; both the same thickness; both more or less of equal length; not folded; margin entire 180 degrees from base of radicle; similar at apex; partially concealing radicle; notched at radicle; with the interface division terminating at base of radicle; without margins recessed; inner face flat; glabrous on inner face. Embryonic axis straight; slightly oblique to length of seed; without a joint evident between the radicle and the cotyledons. Radicle differentiated from cotyledon; centered between cotyledons. Plumule rudimentary; glabrous.

Distribution

Amazonia.

New World; South America (Amazonia); Brazil and Ecuador.