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FOC | Family List | FOC Vol. 5 | Loranthaceae | Helixanthera

2. Helixanthera pulchra (Candolle) Danser, Bull. Jard. Bot. Buitenzorg, sér. 3. 10: 318. 1929.

密花离瓣寄生 mi hua li ban ji sheng

Loranthus pulcher Candolle, Prodr. 4: 295. 1830; Helixanthera pierrei Danser; Loranthus longispicatus var. grandifolius Lecomte.

Shrubs ca. 1 m tall, all parts glabrous. Branches stout, terete or terminally slightly angled, subsmooth, scattered lenticellate. Leaves mostly ± whorled in groups of 3 or alternate; petiole 10-20(-25) mm; leaf blade lanceolate or oblong-lanceolate, 8-15(-23) × 2.5-5(-11) cm, thickly leathery, lateral veins inconspicuous, base obtuse or cuneate and slightly decurrent, margin narrowly revolute, apex subacuminate. Spikes usually in groups of 3, terminal or subterminal, more than 40-flowered; peduncle 10-30 mm; rachis stout, pink, with flowers inserted in slight hollows, (10-)15-20(-25) cm, glabrous; bracts boat-shaped, with a dorsal spurlike sac, 1.2-2 mm, ciliate. Flowers 5-merous. Pedicel absent. Calyx ovoid, 1-2 mm, limb annular, ca. 1 mm, subentire. Mature bud clavate, slightly constricted beyond base. Corolla reddish yellow to bright red, somewhat constricted in middle, grayish scurfy, petals lanceolate, (3.5-)5-6(-8.5) mm, reflexed from middle. Filaments 1-1.5 mm; anthers 2-loculed, 1-1.5 mm, connective broad. Style cylindric, 5-angled, not articulated, (2-)3-4(-5.5) mm; stigma obtuse. Immature berry pink, ovoid, ca. 4.5 × 3.5 mm, scurfy. Fl. Apr-May.

Forests on mountain slopes; 800-1500 m. Yunnan (Jinghong, Mengla) [Cambodia, Indonesia, Malaysia, Thailand].

The plants are parasitic on species of Rhododendron in the Flora area; they are recorded from a wider range of hosts outside the Flora area.


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