Hovomantsina (Dypsis hovomantsina)

Description

Solitary palm. Trunk 6-15 m tall, 20-30 cm. in diam, near the crown 15-20 cm. in diam; internodes 10-35 cm, pale to reddish-brown basally, grey-green distally, nodal scars 1-1.5 cm, pale brown; crownshaft well-developed, 1-1.2 m, about 25 cm. in diam, grey-green and covered in white wax except distally, where red-brown furry. Leaves spirally inserted, occasionally tristichous, 6-7 in the crown, curved, with an untidy look, the pinnae held in all directions (plumose); sheath pale green to whitish, proximally waxy and glabrous, with distal dense soft pale reddish brown persistent tomentum, adaxially peach coloured; petiole 10-56 cm, 7 x 5.5 cm. in diam, channelled with sharp edges, with dense red-brown indument; rachis 3-3.5 m long, in mid-leaf 3.5 cm wide, with keel; pinnae 80-96 on each side of the rachis, grouped and fanned in 3s-6s, the group interval 3-7 cm, bent downwards at two-thirds of their length, the proximal 120-242 x 0.7- 2.4 cm, median 123-135 x 3.3-4 cm, distal 22-50 x 0.6-2 cm, connate for 1.5-4 cm, with a few large laciniate ramenta, without scattered scales. Inflorescene infrafoliar, c. 0.5-1 x 0.5-1 m, branched to 2-3 orders; peduncle 18-26 cm. 7 x 3 cm. in diam; prophyll 21-30 cm, borne at 3-4 cm above the base of the peduncle; peduncular bract deciduous, inserted at 9-11 cm from the base of the peduncle, 45-66 x 10-12 cm, not beaked or briefly beaked with triangular beak, split for 90%; non-tubular peduncular bract occasionally present on upper peduncle, to 20 cm; rachis 48 cm, with 14 branched and 10 unbranched first order branches; rachillae stiff or sub-pendulous, green to yellow-green, 16-40 cm long, 4-8 mm. in diam, glabrous, with dense flowers. Staminate Flowers only known in rather young bud, with sepals 2.1-3 x 2.5-2.8 mm, very hooded; petals < 1.5 mm; stamens 6, < 1.3 mm, probably versatile. Pistillate Flowers only known from the young fruit stage, with sepals 2.7-3.1 x 3-3.3 mm; petals 3.5-3.8 x 3-4 mm; staminodes 6, flat, tooth-shaped, 0.5 mm. Fruit not known, except for the fibrous endocarp. Seed obovoid with pointed base, 9-10 x 7-8 mm, with homogeneous endosperm. Eophyll entire, deeply bifid.