Lagerstroemia vanosii W.J.de Wilde & Duyfjes

de Wilde, W. J. J. O. & Duyfjes, B. E. E., 2014, Lagerstroemia (Lythraceae) in Malesia, Blumea 59 (2), pp. 113-122 : 121

11. Lagerstroemia vanosii W.J.de Wilde & Duyfjes — Fig. 3

Lagerstroemia vanosii W.J. de Wilde & Duyfjes (2013) 96. — Type: Koorders 39478 (holo L; iso BO n.v.), Java, Banjoemas Province .

Treelet; stem and bark not recorded. Twigs (below inflorescence) subterete, c. 2.5 mm diam. Leaves (sub)opposite; petiole 3–6 mm long; lamina glabrous on both surfaces, drying grey-green or dark chocolate-coloured below, elliptic, 6–10 by 2–4.5 cm; lateral veins 5–6(–7) on each side, intercostal venation finely reticulate. Inflorescences terminal, broadly paniculate, 15–20 cm long, densely minutely grey-hairy, hairs simple. Flowers: bud minutely hairy, obconical, with broadly rounded apex, 3–3.5 by 3 mm; pseudopedicel 1–1.5 mm long; calyx tube c. 2.5 mm long, tube and pseudopedicel distinctly (5–)6-ridged (not winged); calyx lobes (sepals) 6, glabrous within, triangular, c. 1.5 mm long, auricles in the sinuses absent; petals white, (narrowly) elliptic, c. 3 mm long (including c. 0.5 mm long claw), margin entire; ovary glabrous; stamens radially dimorphic (the outer 5–6 longer than the numerous inner ones). Capsules glabrous, outer surface drying shagreen, broadly ovoid, 10–12 mm long, (4–)5-valved; fruiting calyx c. 3 mm long, 5–6-ridged (not winged), calyx lobes glabrous within, somewhat reflexed, auricles absent; fruiting pseudopedicel c. 2 mm long.

Distribution — C Java, SW of Banyumas, Nusa Kambangan (‘Banjoemas Province’), known from the type and from Koorders 20043, and Koorders 24643.

Notes — 1. Lagerstroemia vanosii is somewhat similar to L. ovalifolia , of which the petals, including the claw, are 15–20 mm long, while those of L. vanosii are among the smallest known in Lagerstroemia , including claw their length is c. 3 mm.

2. Lagerstroemia vanosii was recently described on old material and it was never collected again. The specimens con- cerned were neglected in the Flora of Java. It is an endemic lowland species, apparently restricted to limestone, flowering was recorded in March and fruiting in September.

Figures

Fig. 3 Lagerstroemia vanosii W.J.de Wilde & Duyfjes. a. Habit of flowering twig; b. flower bud; c. flower; d. ditto, in a later stage, petals dropped off; e. ditto, petals and stamens dropped off, showing developing fruit; f. basal part of flower bud and pedicel, note ‘bracteoles’ with minute axillary buds; g. part of infruc- tescence; h. old fruit, calyx withered away; i. seed (a–f: Koorders 39478; g–i: Koorders 20043).