Blanchetiodendron

Taxonomy

Blanchetiodendron R.C. Barneby & J.W. Grimes Mem. New York Bot. Gard. 74(1): 127. 25 Mar 1996.

Subfamily: Mimosoideae.
Phylogenetic Number: 2.5.11A.
Tribe: Ingeae.
Species Studied - Species in Genus: 1 studied; 1 in genus.

Description

Fruit: A legume; unilocular; 12–22 cm long (Barneby and Grimes, 1996); 2.5–4.3 cm wide (Barneby and Grimes, 1996); 0.1–0.3 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; not plicate; not twisted; symmetrical; oblong; not inflated; compressed; with beak (5–8 X 0.8–1.4 mm); straight; with solid beak the same color and texture as fruit; rounded at apex, or 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; chartaceous; seed chambers externally visible; seed chambers with the raised seed chambers not torulose; margin constricted; margin slightly constricted along both margins; margin without sulcus; margin embellished; margin with thickened sutural areas; wing(s) absent; stipitate; with the stipe 4–15 mm long; with all layers dehiscing; splitting along suture(s). Dehiscence of valves along both sutures; apical and down; passive. Replum invisible. Epicarp dull; monochrome; brown to tan, or green (dark); with surface texture uniform; glabrous; eglandular; without spines; not smooth; with elevated features; veined; transversely veined relative to fruit length and reticulately veined; 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; tan, or green; smooth; without adhering pieces of testa; nonseptate; chartaceous; not exfoliating; remaining fused to epicarp; without wings; entire. Seed(s) 7–10; length parallel with fruit length; neither overlapping nor touching; in 1 series. Funiculus 7–13 mm long; of 1 length only; filiform; straight. Aril absent.

Seed: 10–12 mm long (Barneby and Grimes, 1996Barneby and Grimes, 1996:
Albizia, and allies. Mem. New York Bot. Gard. 74(1): 1&-292. ); 8–10 mm wide (Barneby and Grimes, 1996); 0.8–2 mm thick (Barneby and Grimes, 1996); not overgrown; not angular; symmetrical; circular; 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; dull; not modified by a bloom; colored; monochrome; brown; glabrous; smooth; chartaceous. Pleurogram absent. Pseudopleurogram absent. Fracture lines absent. Rim absent. Wing(s) present; continuous around seed. Raphe not visible. Hilum present; fully concealed; concealed by funicular remnant; without faboid split (assumed); larger than punctiform; 0.6 mm long; with straight outline; linear; apical at apex of radicle tip; flush; not within corona, halo, or rim. Lens discernible; 0.4 mm long; with margins straight; linear; not in groove of raphe; adjacent to hilum; 0.2 mm from hilum; flush; similar color as testa; lighter than testa; tan; not within corona, halo, or rim. Endosperm absent. Cotyledons smooth; both outer faces flat; both the same thickness; both more or less of equal length; not folded; margin not entire 180 degrees from base of radicle; notched; similar at apex; partially concealing radicle; split over radicle; without lobes; with the interface division terminating at base of radicle; without margins recessed; light brown; 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; 1/2 to nearly length of cotyledons. Plumule well developed; glabrous.

Distribution

Eastern Bahia and northwestern Minas Gerais, Brazil.

New World; South America (Eastern Bahia and northwestern Minas Gerais, Brazil); Brazil.
 

Generic Notes

Barneby and Grimes (1996) recognized this monotypic genus. Prior to Barneby and Grimes, its single species had, at various times, been placed in: Albizia (2.5.03), Enterolobium (2.5.07), and Pithecellobium (2.5.11).