Baphia rosa Mackinder & R.Clark

First published in Kew Bull. 67: 418 (2012)
This species is accepted
The native range of this species is NW. Zambia. It is a shrub or tree and grows primarily in the seasonally dry tropical biome.


IUCN Red List of Threatened Species

DD - data deficient

Mackinder, B.A. & Clark, R. Kew Bull (2012) 67: 413.

Typus: Zambia, North West Province, Kabompo Distr., Kambyenuna forest along the Kabompo-Mwinilungu Road, c. 11 km from the Loloma Hospital road junction in Manyinga. NW Plot near P transect, 13°21'01"S, 24°17'04"E, 9 March 1995, Nawa, Harder, Zimba & Luwiika 193 (holotypusK!; isotypus MO).
Morphology General Habit
Shrub or tree 5 – 6 m tall
Morphology Branches
Branches glabrescent, lenticellate, lenticels golden brown, elliptic to round, scattered
Morphology Leaves Stipules
Stipules caducous, not seen
Morphology Leaves
Leaves: petiole terete, 7 – 14 mm long, pale puberulous, pulvinules almost always contiguous; blade elliptic, two to three times as long as wide, 2.1 – 6.6 × 1.0 – 4.2 cm, obtuse to rounded at base, acute to shortly acuminate at apex, acumen up to 4 mm long; midrib impressed above, prominent beneath, lateral veins 6 – 8 pairs; adaxial surface glabrous, abaxial surface mostly glabrous, but appressed pale moderately puberulous near midvein and area immediately adjacent to petiole; midvein pale puberulous
Morphology Reproductive morphology Inflorescences
Inflorescence a raceme in the axils of the upper leaves or compounded into a terminal lax panicle, axes puberulous
Morphology Reproductive morphology Inflorescences Bracts
Bracts triangular, 2 – 3 mm long, up to 1.5 mm wide, puberulous outside, glabrous inside, only present in immature parts of the inflorescence
Morphology Reproductive morphology Flowers Pedicel
Pedicel 10 – 14 mm long, puberulous
Morphology Reproductive morphology Inflorescences Bracteoles
Bracteoles oblong, inserted c. 1 mm below the top of the pedicel, 2.5 – 3.5 × c. 1 mm, puberulous outside, glabrous or nearly so inside, margins ciliate
Morphology Reproductive morphology Flowers Calyx
Calyx spathaceous, 8 – 12 mm long, puberulous outside, drying pinkish-red, a few darker longitudinal veins evident, glabrous inside
Morphology Reproductive morphology Flowers Corolla
Corolla pink, glabrous; standard suborbicular to orbicular, 12 – 17 × 15 – 16 mm; wings narrowly elliptic, 15 – 17 mm long, claw c. 2 mm long, auriculate; keel-petals fused, narrowly elliptic, 14 – 16 mm long, claw c. 2 mm long, base of wings and keel bear small interlocking pockets, c. 0.75 mm deep
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 10, free, 9 – 12 mm long, glabrous; anthers c. 2 mm long, apiculate at apex
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary 6 – 8 mm long, sericeous; style glabrous
Morphology Reproductive morphology Seeds
Pods and seeds unknown
Zambia: Kabompo Distr., Kambyenyuna forest along Manyinga R., 13º21'01""S 24°17΄04""E. Only known from the type collection.
Degraded woodland on sand, along river in flooded area; 1140 m alt.
Baphia rosa is assessed here as Vulnerable (VU D2) under the criteria of IUCN (2001). This species is known only from the type locality which is thought to be an area of local endemism (Timberlake, pers. comm.).
Specific epithet refers to the pink petals noted by the collectors in the field and the pinkish red colour of the calyx seen in the herbarium voucher. Petal colour in Baphia is typically white, the standard petal often with a yellow or orange blotch at its base. Only a few species possess cream, purplish pink or pinkish red petals (Soladoye1985). Soladoye (1985) recognised five sections within Baphia using a combination of morphology, anatomy and pollen characters. He assigned ten species, each possessing longer than broad bracteoles, spathaceous calyces greater than 10 mm long and glabrous stamen-filaments to sect. Longibracteolatae and proposed they be subdivided among three series. Baphia rosa belongs to series Chrysophyllae which is characterised by oblong, rarely filiform bracteoles, inserted shortly but not directly below the calyx or placed free at the base of the calyx and having keel-petals 14 – 19 mm long without hairs along the line of fusion. Furthermore, B. rosa appeared to be morphologically close to B. chrysophylla, the type species of series Chrysophyllae.


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