Sindoropsis

Taxonomy

Sindoropsis J.J.G. Léonard Mém. Acad. R. Belg. Cl. Sc. 30(2): 81. 1957.

Subfamily: Caesalpinioideae.
Phylogenetic Number: 1.4.43.
Tribe: Detarieae.
Group: Detarium.
Species Studied - Species in Genus: 1 studied; 1 in genus.

Description

Fruit: A legumelegume:
usually dry, dehiscent fruit derived from a single carpel that opens along two longitudinal sutures
; unilocular; 6.5–8 cm long; 3–3.5 cm wide; 0.4–0.6 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; not plicate; not twisted; symmetrical, or asymmetrical; lanceolate to oblong; with 1 straight and 1 curved suture; widest near middle or D-shaped; not inflated; flattened; without beak; long tapered at apex; oblique with longitudinal axis of fruit; short tapered at base to rounded at base; oblique with longitudinal axis of fruit; with the apex and base uniform in texture; coriaceous; seed chambers externally invisible; margin not constricted; margin without sulcus; margin plain; wing(s) absent; substipitate; with all layers dehiscing; splitting along suture(s). Dehiscence of valves along both sutures (initially along ventral suture); active; with valves separately enrolling. Replum invisible. Epicarp dull; monochrome; dark reddish brown; with surface texture uniform; glabrous; eglandular; without spines; not smooth; with elevated features; veined; obliquely veined relative to fruit length to transversely veined relative to fruit length; not tuberculate; blistered (minutely); not exfoliating; without cracks; without embedded tissue, much thicker than epicarp, running from base to apex. Mesocarp present; surface not veined; 1-layered; without balsamic vesicles; without fibers; without reniform canals; solid; coriaceous. Endocarp present; visible; dull; opaque; monochrome; tan; without adhering pieces of testa; nonseptate; not exfoliating; remaining fused to mesocarp and epicarp; entire. Seed(s) 1–2; length oblique to fruit length; neither overlapping nor touching; in 1 series. Funiculus 0.1–3 mm long; of 1 length only; filiform; straight. Aril absent.

Seed: 12–25 mm long; 13–17 mm wide; 6–7 mm thick; not overgrown; not angular; symmetrical; oblong; compressed; 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 to dull; not modified by a bloom; colored; monochrome; black; glabrous; not smooth; with elevated features; wrinkled (transverse ribbed); osseous. Pleurogram absent. Pseudopleurogram absent. Fracture lines present; concentric. Rim absent. Wing(s) absent. Raphe not visible. Hilum present; fully concealed; concealed by funicular remnant; without faboid split; larger than punctiform; 0.1–1 mm long; with straight outline; subapical to radicle tip; flush; not within corona, halo, or rim. Lens discernible; 0.1–0.9 mm long; with margins curved; circular; not in groove of raphe; mounded; same color as testa; not within corona, halo, or rim. Endosperm present; trace (in radicle region); not pluglike and not resembling tip of radicle; adnate to not stated. 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; completely concealing radicle; barely 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; parallel 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

Gabon.

Old World; Africa (Gabon).

Tribal Notes

Tribe Detarieae

Bruneau et al. (2000) carried out extensive phylogenetic analyses of tribes Amherstieae and Detarieae. They concluded that they form a single monophyletic group. Therefore, they supported Polhill's (1995a, 1995b) decision to unite the two tribes.