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Carapa.org - batesii

Carapa batesii C.D.C.

Ref. C.D.C., Ann. Conserv. Jard. Bot. Genève 10: 167. 1917. TYPE: CAMEROON, South: Mfoua, ca. 02°20'N, 10°50'3'E,  6 October 1897, Bates 535 (holotype: K!; isotype: P!).

Tree and leaves

It is an undestory treelet 1.8—3 m tall with a small diameter 4—10 cm. Bark and branches are unknown. Leaves are 25—35 cm long, have a petiole 16—19 x 0.3—0.4 cm with a base swollen, and generally lack nectaries. Rachis is 8—18 cm long, glabrous with 3 or 4 pairs of leaflet having petiolule 0.7—1 cm long. Basal leaflet pairs are 14—18 x 4—6 cm up to 23—32 x 6—8.5 cm in ultimate pairs, are glabrous beneath, obovate, with the apex cuspidate, often glandular and the base narrowly cuneate. Midrib is prominent beneath, glabrous, with secondary veins 6—13 pairs and tertiary veins loose and raised beneath.

Inflorescence and flowers

Inflorescence is located in the axils of fully developped or reduced scale-like leaves, is 15—27 cm long, erect, glabrous, and sparsely and very shortly branched, lowermost branches being up to only 2cm long.  Peduncle is 3—6 cm long. Flowers are 5-merous and distinctly pedicellate, pedicel being 2—3 mm long, glabrous to transversely scurfy. Calyx are greenish, glabrous, with lobes less than 1mm long. Petals are 3—4.5 x 2—3 mm, glabrous, and rarely with a gland towards the apex. Staminal tube are 3—4 mm long, 10-lobed, with lobes being 0.5—1 mm long. Anthers are ca. 0.8 x ca. 0.5mm, antherodes being unknown. Disk is 0.7—1 mm high and 2—2.6 mm in diameter. Ovary are unknown in carpellate flowers, and 0.7—1.1 x 0.7—1 mm in staminate flowers. Locules are 2-ovulate, style  being unknown in carpellate flowers, and 0.5—1.5 mm long in staminate flowers. Stigma is ca. 1.3mm in diameter.

Fruit

The fruit is unknown.

Phenology

Distribution

Southern Cameroon, in lowland forest, 40—500 m altitude.

Notes

C. batesii is close to C. zemagoana, both being treelets that have leaves with only a few pairs of leaflets and gynoecia with 2-ovulate locules, but it differs in its glabrous inflorescence.

Reference

Kenfack, D. (2011) A synoptic revision of Carapa (Meliaceae). Harvard Papers in Botany 16 (2): 171-231.