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FOC | Family List | FOC Vol. 19 | Rubiaceae | Ixora

1. Ixora auricularis Chun & F. C. How ex W. C. Ko, Guihaia. 19: 99. 1999.

耳叶龙船花 er ye long chuan hua

Shrubs or small trees, to 6 m tall; branches glabrous. Leaves opposite, sessile or subsessile; blade drying thinly papery, brown adaxially, pale abaxially, oblanceolate, oblong-elliptic, or obovate-elliptic, 10-23 × 5.5-9 cm, glabrous on both surfaces, base cordate-auriculate, apex shortly acuminate; secondary veins 10-13 pairs; stipules ovate to broadly triangular, 7-18 mm, abruptly narrowed and aristate. Inflorescences terminal, corymbose, 6-15 cm wide; peduncle 3-5 cm, articulate near base, at articulation with reduced leaves ca. 3 cm; bracteoles linear-lanceolate, ca. 1 mm; pedicels 2-3 mm. Flowers sessile or pedicellate. Calyx with hypanthium obconic; limb deeply lobed; lobes ligulate. Corolla purplish red; tube 20-30 mm, glabrous at throat; lobes oblanceolate-oblong, 7-7.2 × 3-3.5 mm, acute. Drupe globose, 6-8 mm in diam. Fl. May-Jun.

● Broad-leaved forests or thickets at middle elevations; ca. 1100 m. Yunnan.

The protologue text described the calyx "post anthesis" as 2-2.5 mm, but the protologue figure illustrated it as 4 mm at anthesis.


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