Dalbergia ramosii Sunarno & H.Ohashi, 2016

Adema, F., Ohashi, H. & Sunarno, B., 2016, Notes on Malesian Fabaceae (Leguminosae-Papilionoideae) 17. The genus Dalbergia, Blumea 61 (3), pp. 186-206 : 198

25. Dalbergia ramosii Sunarno & H.Ohashi , sp. nov. — Fig. 5

Rather similar to D. beccarii differing in the smaller stipules that are elliptic to falcate and the smaller flowers: calyx 1.5–1.8 mm long, median tooth c. 0.8 mm long, in D. beccarii 2–3 resp. 2 mm long; standard blade 1.5 by 1.5– 2 mm, in D. beccarii 2.5–3 by 2 mm. — Type: BS 1367 ( Ramos ) (holo BO;iso K), Philippines, Luzon, Rizal Prov., Morong.

Erect or scandent shrub. Twigs striate, densely to sparsely pubescent, glabrescent. Stipules elliptic to falcate, 2.5–3 by 1 mm, outside sericeous. Leaves with 5–17 leaflets. Petioles 2–5 mm long, puberulous; rachis mostly as the petioles, 15–45 mm long. Leaflets: terminal elliptic to obovate, 3–10 by 2–5 mm, chartaceous, base obtuse or rounded, apex rounded, slightly emarginate, above sparsely puberulous, glabrescent, below densely sericeous, midrib above, nerves above, 4–6 per side; lateral mostly as the terminal; pulvinus 0.4–0.5 mm long, glabrous. Inflorescences axillary, panicles, 6 –10 mm long, peduncles 2–3 mm long, sparsely puberulous. Bracts to the flowers ovate, 0.7–0.8 mm long, outside sparsely puberulous. Pedicels c. 0.5 mm long, puberulous. Bracteoles ovate, c. 1 mm long, outside glabrous or puberulous in middle part. Calyx bell-shaped, 1.5–1.8 mm long, tube c. 1 mm long, median tooth obovate, c. 0.8 mm long; outside glabrous or puberulous. Standard: claw c. 0.3 mm long; blade obovate, 1.5 by 1.5– 2 mm, rounded, emarginate. Wings: claw 0.3–0.4 mm long; blade elliptic to obovate, 1.2–1.3 by 0.7–0.8 mm, rounded. Keel petals: claw 0.3–0.4 mm long; blade broadly obovate to suborbicular, c. 1.2 by 1.2 mm, rounded. Stamens 9–10, monadelphous, open sheath, tube 0.8–0.9 mm long, free part of filaments alternately short, c. 0.4 mm long, and longer, c. 0.6 mm long. Ovary c. 1 mm long, sericeous, stipe 0.3–0.4 mm long, glabrous; ovules 1–2; style c. 0.1 mm long.

Distribution — Philippines, Luzon. Only known from the type.

Note — Dalbergia ramosii is very similar to D. beccarii and D. teysmannii . It is easily distinguished by the smaller falcate stipules, the flower size and the shape of the lowest calyx tooth.

Figures

Fig. 5 Dalbergia ramosii Sunarno & H.Ohashi. a. Habit; b. flower; c. opened calyx; d. petals (top to bottom: standard, wings, keel); e. stamens; f. pistil (all: BC 1367 (Ramos)). — Drawing by Bambang Sunarno.