Volume 16 > Part 1 > Year 2022 > Page 149 > Annonaceae > Huberantha

2. Huberantha jenkinsii (Hook.f. & Thomson) Chaowaskuwfo-0001342041

Kew Bull. 70(2)–23: 2. 2015; I.M.Turner, Gard. Bull. Singapore 70: 538. 2018.— Guatteria jenkinsii Hook.f. & Thomson, Fl. Ind. 141. 1855.— Polyalthia jenkinsii (Hook.f. & Thomson) Hook.f. & Thomson, Fl. Brit. India 1: 64. 1872; Kurz, Forest Fl. Burma 1: 37. 1877; King, J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 61: 56. 1892; Ast in Humbert, Fl. Indo-Chine Suppl. 1: 76. 1938; J.Sinclair, Gard. Bull. Singapore 14: 305. 1955; Chalermglin, Fam. Annon. 282. 2001; S.Gardner et al., Forest Trees S. Thailand 1: 152. 2015.— Hubera jenkinsii (Hook.f. & Thomson) Chaowasku, Phytotaxa 69: 48. 2012; I.M.Turner et al. in Soepadmo et al., eds., Tree Fl. Sabah & Sarawak 8: 71. 2014. Fig. 31. Plate XVII: D–E.

Accepted Name : This is currently accepted.

Description : Tree to 10 m tall. Twigs appressed-puberulous. Leaves subcoriaceous, elliptic, 12.3–17 by 4.1–5.5 cm, base cuneate, apex acute to acuminate, glabrous on both sides, secondary veins 10–13 per side, distinct below, hairy domatia generally present at axils of secondary veins below. Inflorescences 1-flowered, pedicels 14–22 mm long, each bearing 1–2 bracts at or near the base. Sepals free, ovate-triangular, 2.5–3 mm long, apex acute. Petals yellow, ± subcoriaceous, erect at anthesis; outer petals elliptic, 32–50 by 10–16 mm, apex obtuse; inner petals elliptic, 32–47 by 12–19 mm, apex obtuse. Stamens numerous, 1.2–1.8 mm long, anther connective apex truncate. Carpels numerous, ovaries appressed-villous, stigmas ± ellipsoid. Receptacle ± conical. Fruit of up to 38 monocarps borne on a pedicel up to 25 mm long. Monocarps ellipsoid(-cylindrical), 1–1.2 by 0.5–0.65 cm, apex usually short-apiculate, base contracted into a stipe 13–18 mm long. Seed 1, ellipsoid to ellipsoid-cylindrical, 9–11 by 4–5.5 mm.

Thailand : SOUTH-EASTERN: Chanthaburi; PENINSULAR: Surat Thani, Nakhon Si Thammarat, Phatthalung, Songkhla, Narathiwat.

Distribution : Bangladesh, India (type), Myanmar, Vietnam, Peninsular Malaysia, Singapore, Borneo, the Philippines.

Ecology : Evergreen(-deciduous) forests to 150 m alt. Flowering: February, March, July–October, December; fruiting: March, September, October, December.

Vernacular : Kradung nga khao (กระดังงาเขา)(Surat Thani); saiyut ton (สายหยุดต้น), sang yu (สังหยู)(Penninsular).

Notes: Some plants from Songkhla Province (Plate XVII: F; also collection Gardner & Sidisunthorn ST2823 described in Gardner et al., 2015) look different from Huberantha jenkinsii mainly because of the larger sepals. Further study is required to shed light on the identity of this collection, which could represent a third species of Huberantha in Thailand. Heterotypic synonyms listed for H. jenkinsii by earlier authors require additional review and are not listed here.