Monodora hastipetala
Tree to 8 m tall; d.b.h. to 5 cm; bark distinctly striate, grey; young branches drying black, glabrous; old branches grey, striate, glabrous. Petioles ca. 2 mm long, ca. 1 mm in diameter, glabrous, leaf lamina inserted on side, grooved adaxially. Leaf lamina 10-12 cm long, 3-4 cm wide, length:width ratio 2.5-3, narrowly obovate to narrowly elliptic, sometimes narrowed towards the base, base acute to rounded, apex acuminate, acumen 1-1.5 cm long, glabrous; midrib glabrous on both sides; secondary veins 10-14 pairs, uniformally curving upwards, glabrous. Flowers single, leaf-opposed, pendulous. Flowering pedicels 17-20 mm long, 0.6-0.8 mm in diameter, glabrous. Upper bract inserted in upper half of pedicel, 5-9 mm long, 3-5 mm wide, length:width ratio 1.4-1.6, ovate, base auriculate-clasping, apex acute, glabrous on both surfaces, pale green; margins straight, with short straight hairs or glabrous. Sepals 6-8 mm long, 3-4 mm wide, length:width ratio ca. 2, elliptic, apex rounded to acute, glabrous on both surfaces, green; persistent in fruit, margins entire, with short straight hairs or glabrous. Outer petals 20-26 mm long, 6-8 mm wide, length:width ratio 3-4.3, narrowly elliptic, base truncate, apex acute, glabrous, light green; held horizontally at anthesis, margins undulate, with short straight hairs or glabrous. Inner petals 10-17 mm long, 4-7 mm wide, length:width ratio 2-3, clawed ovate, base truncate, apex long-acuminate, densely covered with short straight hairs at base of inside surface and all over outside, white with purple base at anthesis, connivent by the center of lamina over the receptacle; margins straight; claw 4-5 mm long, claw:inner petal ratio 0.3-0.4, glabrous, white to pale green, tinged purple at apex. Receptacle ca. 2 mm in diameter, flat. Stamens in 3-4 rows, ca. 0.6 mm long, white; connective shield ca. 0.1 long, glabrous, those of innermost whorl extending slightly over ovary wall. Ovary ca. 1 mm long, ca. 0.5 mm wide; stigma ca. 0.8 mm in diameter, glabrous, light yellow. Fruiting pedicels 1,8-2,5 cm long, 3-4 mm in diameter, woody, glabrous, green. Fruits ca. 1.5-2.5 cm long, ca. 2-2.5 cm in diameter, length:width ratio 0.75-1, broadly ovoid, constricted around seeds when dried, slightly lumpy when fresh, glabrous, green with white dots; pericarp 1-2 mm thick. Seeds 10-12 mm long, 9-10 mm wide, transversely broadly ellipsoid; testa smooth, light brown; raphe slightly thickened, brown; hilum 4-5 mm wide, 2-2.5 mm wide, elliptical.
Monodora hastipetala is distinctive in having long-acuminate inner petals connivent by the center of lamina and leaves narrowly obovate to narrowly elliptic, sometimes narrowed towards the base. It is very unlike the other species in the region, M. minor and M. carolinae. It appears close to M. junodii by the shape of the inner petals, connivent at the center of the lamina
CR B1ab(iii). Monodora hastipetala is endemic to the unprotected Kiwengoma Forest in the Matumbi Hills. It is represented by only 6 collections in herbaria and has an extent of occurrence of 17km2, justifying the “critically endangered” category.
Recorvered as sister to M. junodii with maximum support.
East Tanzania; in dry scrub and riverine coastal forest; at 200-400 m altitude.