Lasianthus reticulatus Blume

102. Lasianthus reticulatus Blume View in CoL

Lasianthus reticulatus Blume (1826 View in CoL –1827) 1000; Miq. (1857) 324; (1869) 248;Valeton ex Winkler (1910) 569;Merr.(1921) 578;(1929a) 292; Bakh.f. (1965) 343. — Type: Blume s.n. (holo L, barcode L0000700;iso L,barcodes L0000701, L0000702), Java, Seriboe.

Lasianthus cinnamomoides Miq. (1857) View in CoL 325. — Type: Zollinger (n.v.), Java, Passir Madang.

Lasianthus maingayi Hook.f. (1880) View in CoL 188; King & Gamble (1904) 132; Ridl. (1923a) 160; Craib (1934) 213;K.M. Wong (1989) 369; H.Zhu (2001b) 136, syn. nov. — Type: Kew Distr.871 (Maingay 1699) (K), Peninsular Malaysia.

Lasianthus caloneurus K.Schum. (1902) View in CoL 339; Pit. (1924) 397. — Type: Schmidt 683 (holo C), Thailand, Chantaburi.

Lasianthus flavicans King & Gamble (1904) View in CoL 116. — Syntypes: Ridley 4394 (n.v.), 6927 (n.v.), Singapore; Scortechini s.n. (n.v.), Perak; Ridley 2223 (n.v.), King’s collector 10974 (n.v.), Pahang.

Shrubs, c. 2 m high; branchlets terete, c. 2.5 mm diam, compressed in the youngest part, minutely appressed-pubescent. Leaves: blades elliptic-oblong to elliptic-oblanceolate, 20 –26 by 6 – 9 cm, thinly coriaceous or membranaceous, pale greenish when dry, glabrous above, minutely appressed-pubescent beneath, apex acuminate or caudate-acuminate, base acute, midrib, nerves and nervules conspicuous above, strongly prominent beneath, nerves 5–7 pairs, ascending at an angle of 50–60°, curved to the margin, tertiary nervules parallel, quater- nary nervules reticulate; petioles short, 5–10 mm long, minutely appressed-pubescent. Stipules small, triangular, acute at apex, c. 3 mm long, strigose. Cymes very short pedunculate or extremely congested; bracts usually absent. Flowers subsessile, crowned; calyx campanulate, c. 2 mm long, constricted somewhat below the 3–4 triangular teeth, appressed-pubescent; corolla tubular, c. 6 mm long, with 3–4 lobes, glabrous outside, pubescent inside; ovary with 3–4 locules. Drupes obliquely elliptic, narrowed at base, glabrous, rugose, 1–4-ridged; pyrenes 1–4, verrucose, furrow on the abaxial face.

Distribution — S Thailand, Malaysia (Peninsular, Borneo), Singapore, Indonesia (Sumatra, Java, Kalimantan, Sulawesi), Brunei, Philippines (Palawan).

Notes — This species has appressed-pubescent branchlets and leaf midrib and nerves beneath; leaves large, elliptic-oblanceolate to elliptic-oblong; nerves prominent beneath, 6 –7 pairs; nervules reticulate; petioles short; stipules small, triangular; cymes tuberculate; calyx limb campanulate with 4 minute lobes; ovary 4-locular; drupes verrucose, constricted at the base of persistent calyx limb; pyrenes 1–4. Lasianthus maingayi cannot be separated from L. reticulatus .

This species is very closely related to L. constrictus . It differs from the latter by having densely appressed-pubescent on

3 mm

Fig. 33 Lasianthus ridsdalei H.Zhu. a. Habit with inflorescences; b. detail of branch showing stipule and axillary inflorescences; c. stipule; d. calyx; e. corolla split opened; f. fruit ; g. cross section of fruit (a–e: C.E. Ridsdale SMHI1837; f, g: C.E. Ridsdale 1046, holo L).

branches and nerves beneath, leaves relatively large with 6 –7 pairs of nerves, flowers sessile clustered in very short congested peduncles, calyx limb with 4 minutely triangular lobes. Lasianthus constrictus has relatively small leaves with 3 –5 pairs of nerves and subglabrous or sparsely strigose branches and leaf nerves beneath, cymes usually sessile, calyx limb truncate or minutely toothed.