Subfamily: Mimosoideae.
Phylogenetic Number: 2.5.13A.
Tribe: Ingeae.
Species Studied - Species in Genus: 2 studied; 3 in genus.
Fruit: A legume; unilocular; (4–)6–19 cm long (Barneby and Grimes, 1996); 1.6–4.5 cm wide (Barneby and Grimes, 1996); 0.9–1.2 cm thick (Barneby and Grimes, 1996); 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; curved, or straight; not plicate; not twisted; asymmetrical, or symmetrical; falcate, or oblong; with both sutures parallelly curved; not inflated; flattened; without beak; rounded at apex; aligned with longitudinal axis of fruit (not centered, to one side); rounded at base, or tapered at base; aligned with longitudinal axis of fruit (not centered, to one side); with the apex and base uniform in texture; ligneous; seed chambers externally invisible; margin constricted, or not constricted; margin constricted along both margins (where ovules not fertilized, fruit not developing and consequently constricted); margin without sulcus; margin plain; wing(s) absent; stipitate; with the stipe 15–20 mm long; with all layers dehiscing (tardily); splitting along suture(s). Dehiscence of valves along both sutures; apical and down and basal and up; passive. Replum invisible. Epicarp dull; monochrome; dark brown; with surface texture uniform; glabrous, or pubescent but soon deciduous (E. ebano (J.L. Berlandier) R.C. Barneby & J.W. Grimes); with hairs erect; with 1 type of pubescence; puberulent; with pubescence brown; with pubescence uniformly distributed; with simple hairs (straight); pliable; with hair bases plain; eglandular; without spines; not smooth; with elevated features; not veined; not tuberculate; granulate; not exfoliating; with cracks; cracking transverse to fruit length and irregular, or irregular; without embedded tissue, much thicker than epicarp, running from base to apex. Mesocarp present; thick (1.5–3 mm thick); surface not veined; 1-layered; without balsamic vesicles; with fibers; without reniform canals; fibrous throughout; ligneous. Endocarp present; visible; dull; opaque; bichrome; brown and tan (septa lighter colored than the fruit wall); smooth; without adhering pieces of testa; septate; with septa thin (tissue paper-like), flexible; with septa eglandular; coriaceous; not exfoliating; remaining fused to mesocarp and epicarp; without wings; entire. Seed(s) 8–10 (Barneby and Grimes, 1996Barneby and Grimes, 1996:
Albizia, and allies. Mem. New York Bot. Gard. 74(1): 1&-292.
); length transverse to fruit length, or oblique to fruit length; neither overlapping nor touching; in 1 series. Funiculus 2–4 mm long; of 1 length only; filiform; curved to S-curved, or straight. Aril absent.
Seed: 8–17 mm long; 6–12 mm wide; 4–8 mm thick; not overgrown; not angular; symmetrical; elliptic, or rhombic, or trapezoid, or irregular; quadrangular, or flattened, or mounded on 1 side and straight on other side; 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; dull; not modified by a bloom; colored; monochrome; dark brown to black; glabrous; smooth; coriaceous. Pleurogram present (appearing to be on the side because the seed compressed at right angles to the cotyledons); 90 %. Pseudopleurogram absent. Fracture lines present (Ebenopsis ebano (J.L. Berlandier) R.C. Barneby & J.W. Grimes), or absent (Ebanopsis confinis (P.C. Standley) R.C. Barneby & J. W. Grimes); irregular. Rim absent. Wing(s) absent. Raphe not visible. Hilum present; fully concealed; concealed by funicular remnant; without faboid split (assumed); larger than punctiform; 0.3–0.4 mm long; with curved outline; elliptic; apical at apex of radicle tip; flush; within halo (Ebenopsis ebano (J.L. Berlandier) R.C. Barneby & J.W. Grimes), or not within corona, halo, or rim (Ebanopsis confinis (P.C. Standley) R.C. Barneby & J. W. Grimes); halo lighter than testa. Lens discernible; 0.4–0.5 mm long; with margins curved (Ebenopsis ebano (J.L. Berlandier) R.C. Barneby & J.W. Grimes), or straight (Ebanopsis confinis (P.C. Standley) R.C. Barneby & J. W. Grimes); linear (Ebanopsis confinis (P.C. Standley) R.C. Barneby & J. W. Grimes); ovate (Ebenopsis ebano (J.L. Berlandier) R.C. Barneby & J.W. Grimes); not in groove of raphe; adjacent to hilum; ca. 0.2 mm from hilum; mounded (Ebenopsis ebano (J.L. Berlandier) R.C. Barneby & J.W. Grimes), or flush (Ebanopsis confinis (P.C. Standley) R.C. Barneby & J. W. Grimes); dissimilar color from testa; lighter than testa; white; not within corona, halo, or rim. Endosperm present; thin; not pluglike and not resembling tip of radicle; covering entire embryo; adnate to testa. Cotyledons smooth; outer face of one cotyledon flat and other cotyledon convex, or both outer faces convex, or both outer faces flat; 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; split over radicle; without lobes; with the interface division terminating at base of radicle; without margins recessed; brown, or tan; 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; bulbose; lobe tip straight; straight with embryonic axis; centered between cotyledons; less than 1/2 length of cotyledons. Plumule rudimentary; glabrous.