Hypericum leschenaultii

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Hypericum leschenaultii

Description

Shrub or treelet,½-2½ m, branchlets 4-lined and flattened when young, becoming terete. Leaves subsessile or up to 7 mm petiolate, 23½-8 by 1-3¾ cm, lanceolate to narrowly ovate or rarely ovate, apex acute to rounded-apiculate, base broadly cuneate to rounded, margin often reflexed, glaucous beneath; 4 main lateral veins, with lax reticulate venation; glands all pale, shortly striate and punctate. Inflorescence 1-3(-10, rarely up to 18)-flowered, terminal (1-2 nodes), corymbose. Flowers (3½-)4-7 cm Ø, flat or slightly concave; buds ± broadly ovoid, acute or subacute. Sepals 7-20 by 2-8 mm, free, imbricate, narrowly oblong or narrowly elliptic or rarely ovate to oblanceolate, very acute to subacute, entire, midrib sometimes visible below and sometimes incrassate above; spreading or recurved in flower and fruit; glands all pale, linear. Petals deep golden yellow, (2-)2½- 4½ by VA-3 cm, broadly obovate to obovate-circular, entire, deciduous; apiculus ± distinct, acute to obtuse; glands all pale, linear. Stamen fascicles 5, 9-12 mm long, c. ⅓ as long as petals, each with c. 80 stamens, caducous; anthers yellow, gland amber. Ovary 6-9 mm, ovoid or ± narrowly ovoid-conic to narrowly ellipsoid, acuminate; styles 5, 3½-7 mm, about half as long as ovary, erect or suberect, outcurved near apex, free; stigma small; placentas 5, axile, with central lacuna. Capsule 1-2 cm, narrowly ellipsoid or narrowly ovoid-conic. Seeds dark orange-brown to reddish-brown, 0.8-1 mm, cylindric, sometimes curved, scarcely carinate, shallowly and minutely linear-foveolate to reticulate.

Distribution

Asia-Tropical:, Jawa (Jawapresent); Lesser Sunda Is. (Balipresent); Sumatera (Sumaterapresent) Flores: present Lesser Sunda Is: present Lombok: present Mts Bonthain & Latimodjong: present SW. Celebes: present
Malesia: Sumatra, Java, Lesser Sunda Is. (Bali, Lombok, Flores), SW. Celebes (Mts Bonthain & Latimodjong). .

Notes

The form on Mt Kerintji (Sumatra) has more prominent main lateral leaf veins, larger flowers and broader sepals than the remainder of the species. In this it comes closest to the nearest relative of H. leschenaultii, a hitherto undescribed species from Thailand that differs in having elliptic-oblong leaves, with an intramarginal vein, more prominent secondary lateral veins and an apiculate apex, and ovate-triangular sepals.

Citation

STAPF, Bot. Mag. 1926: t. 9160
GUILLEMIN - in Delessert, Ic. Sel. Pl. 3. 1837: t. 27
MIQ. - in Fl. Ind. Bat. 1859: 514
ROBSON - in J. R. Hort. Soc. 1970: 489
CHOISY - in Zoll., Syst. Verz. 1854: 151
CHOISY, Pl. Jav. 1858: 6
HASSK., Cat. Hort. Bog. 1844: 213
Y. KIMURA - in Nakai & Honda, Nova Fl. Jap. 10. 1951: 98
RIDL. - in J. Fed. Mal. Stat. Mus. 1917: 17
BACK. & BAKH.F. - in Fl. Java. 1963: 382
HASSK., Cat. Hort. Bog. 1844: 213
MOR., Syst. Verz. 1846: 25
MIQ. - in Fl. Ind. Bat. 1859: 515
KELLER - in E. & P., Nat. Pfl. Fam., ed. 2, 21. 1925: 176
BACK., Schoolfl. Java. 1911: 87
HOCHR. - in Candollea. 1925: 435
MERR. - in Contr. Arn. Arb. 1934: 107
MIQ. - in Fl. Ind. Bat. 1859: 515
KELLER - in E. & P., Nat. Pfl. Fam., ed. 2, 21. 1925: f. 73
BURBIDGE - in The Garden. 1883: t. 376
MOR., Syst. Verz. 1846: 25
CHOISY - in Zoll., Syst. Verz. 1854: 151
DOCT. v. LEEUWEN - in Trop. Natuur. 1927: f. 23, 24
STEEN., Mt Fl. Java. 1972: t. 23: 6
STEEN. - in Bull. Jard. Bot. Btzg. 1934: 219