Diospyros dictyoneura Hiern
- Dataset
- Notes on South-East Asian Diospyros L. (Ebenaceae, Ericales): commonly misidentified species in mainland South-East Asia
- Rank
- SPECIES
Classification
- kingdom
- Plantae
- phylum
- Tracheophyta
- class
- Magnoliopsida
- order
- Ericales
- family
- Ebenaceae
- genus
- Diospyros
- species
- Diospyros dictyoneura
biology_ecology
Ecology Diospyros dictyoneura is found in evergreen forest at 100 – 1000 m elevations.
description
Description Tree, 8 – 25 m tall. Leaves elliptic to elliptic-oblong, 9 – 17 × 5 – 7 cm, base rather rounded, apex acuteround or acuminate-rounded, blade coriaceous when dried, glabrous on both sides; lateral veins 6 – 9 on each side, not parallel, anastomosing near the margin, raised below, tertiary veins reticulate; petiole 1 – 1.5 cm long, glabrous. Male inflorescences 3 – 6 - flowered, 3 – 4 cm long, hairy. Calyx campanulate, subglabrous to hairy on both sides; lobes 5, rarely 4, divided ⅔ of the way to the base, broadly ovate, 3 – 5 × 3 – 5 mm, apex acuminate to caudate. Corolla tubular when closed, hairy outside, opened male corolla not seen; lobes 5, divided about ⅓ of the way to the base, ovate, apex rounded. Female inflorescences 1 – 3 - flowered, 2 – 3 cm long, hairy. Female calyx and corolla similar to male flowers. Fruits elongated, ovoid to ellipsoid, 3.5 – 5 × 2 – 2.5 cm, hairy outside with brownish or yellowish hairs when young, glabrescent when old; fruit stalk stout to slender, 1 – 2.5 (– 4) cm long. Fruiting calyx strongly accrescent, campanulate, 2.5 – 3 cm in diam. (4 – 6 cm in diam. when fully spread), subglabrous to pubescent on both sides; lobes 5, rarely 4, divided ⅔ of the way to the base, oblong or ovate, 2 – 2.5 × 2 – 3 cm, apex acute or acuminate, curved inward enclosing the base of the fruit, never reflexed, base plicate. Seeds ca 2 × 1 cm; endosperm smooth.
description
Fig. 7 A – C
materials_examined
Distribution BRUNEI • Location not specified [Ashton 7868 (K), Bernstein 179 (BURN, K)], Belait [Ashton 7868 (BRUN), Azlan BRUN 23480 (BRUN, K, SING), Chin 4602 (BRUN), Kalat BRUN 21980 (BRUN), Ogata Og-B 16 (BRUN), Smythies SAN 17466 (BRUN, K, L, KEP, SING)], Temburong [Ashton 2989 (BRUN), Project Team (25 Ha Forest Dynamics Plot) 12 - 4613 (BRUN), Tan 317 (BRUN)], Tutong [Suzuki K 12569 (BRUN)]. INDONESIAN BORNEO • Kalimantan [Neth. Ind. For. Service bb. 29031 (K)]. MALAYSIAN BORNEO • Sabah [Caudra A 1349 (K, P), Madani 36752 (K), Madani 39879 (K), Sundaling SAN 96659 (K)], Sarawak [Beccari 2615 (FI, K, P), Chai S. 19326 (K), Galau S 15705 (K), Galau Tree No. 521 (K), Paie S. 38428 (K, L), Othman S. 36992 (K, L), Smythies SAN 17466 (K), Yii S. 48415 (K)]. PENINSULAR MALAYSIA • Johor [Corner 37029 (K)], Pahang [Abu FRI 46749 (K), Kochummen FRI 16198 (K)], Terengganu [Whitmore FRI 20200 (K)].
materials_examined
– Type: MALAYSIAN BORNEO • Sarawak, Mt. Mattang, near Kuching; Sep. 1866; Beccari PB 2615; lectotype: K [K 000792679]!, designated by De Kok & Puglisi (2021); isolectotypes: FI [FI 008993]!, P [P 00721798]!.