Subfamily: Caesalpinioideae.
Phylogenetic Number: 1.4.27.
Tribe: Detarieae.
Group: Crudia.
Species Studied - Species in Genus: 5 studied; 6 in genus.
Fruit: A legume; unilocular; 3.5–9 cm long; 2–6.5 cm wide; 0.8–4.3 cm thick; length less than twice as long as width to 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; asymmetrical; triangular, or oblong, or obovate to circular; not inflated; compressed to terete; without beak; tapered at apex; aligned with longitudinal axis of fruit to right-angled with longitudinal axis of fruit; rounded at base; aligned with longitudinal axis of fruit to oblique with longitudinal axis of fruit; with the apex and base uniform in texture; coriaceous to ligneous; seed chambers externally invisible; margin not constricted; margin without sulcus; margin plain; wing(s) absent; substipitate to nonstipitate; tardily with all layers dehiscing to indehiscent; splitting along suture(s). Dehiscence of valves along both sutures; passive. Replum invisible. Epicarp nearly glossy to dull; monochrome; brown; with surface texture uniform; glabrous; eglandular; without spines; not smooth; with elevated features; not veined; not tuberculate; rugose and scaly, or pusticulate; not exfoliating; without cracks; without embedded tissue, much thicker than epicarp, running from base to apex. Mesocarp present; surface not veined; 1-layered, or 2-layered; without balsamic vesicles; in 2-layered types with fibers; without reniform canals; longitudinally fibrous throughout; with fibers reticulate embedded in mealy tissue over solid layer; ligneous. Endocarp present; visible; dull; opaque; monochrome; dark brown; without adhering pieces of testa; nonseptate; not exfoliating; remaining fused to mesocarp and epicarp; entire. Seed(s) 1; length parallel with fruit length. Funiculus 0.1–0.4 mm long; of 1 length only; flattened; straight. Aril absent.
Seed: 27–58 mm long; 13–37 mm wide; 5–22 mm thick; not overgrown; not angular; symmetrical; circular to oblong, or cordate; terete to 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 (vitriol); not modified by a bloom; colored; monochrome; dark reddish brown; glabrous; not smooth; with elevated features, or recessed features; rugose; longitudinally striate; chartaceous. Pleurogram absent. Pseudopleurogram absent. Fracture lines absent. Rim absent. Wing(s) absent. Raphe not visible. Hilum present; visible; without faboid split; larger than punctiform; 0.1–2 mm long; with straight outline; subapical to radicle tip; flush; 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; completely concealing radicle; entire over 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 to oblique to length of seed; without a joint evident between the radicle and the cotyledons. Radicle differentiated from cotyledon; centered between cotyledons. Plumule glabrous.
Seed, cotyledon, embryo, and testa: K. alternifolium (Elmer) Merrill & Rolfe - bottom far left cotyledon topography; K. pinnatum (de Candolle) H.A.T. Harms - top left center seed topography, top far left cotyledon entire and concealing radicle (L) and embryonic axis (R), testa SEMs; K. spp. - bottom left center seeds.
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