Flora of China
  FOC Vol.11 (2008)              | Family List  Erythroxylaceae  PDF     | Link Font:+ Big | - Small
   6. Erythroxylaceae  Kunth
古柯科   gu ke ke
Authors:Liu Quanru (刘全儒); Bruce Bartholomew


Shrubs or trees. Stipules intrapetiolar. Leaves alternate or rarely opposite, simple; leaf blade margin entire. Flowers usually bisexual, in axillary fascicles or cymes, regular, 5-merous, often heterostylous. Sepals 5, basally connate, with imbricate or valvate lobes, persistent. Petals 5, distinct, imbricate, usually with a scale on inner face at base. Stamens 5, 10, or 20, 1- or 2-verticillate; filament bases usually connate into a tube; anthers elliptic, 2-celled, with longitudinal slits. Ovary superior, connected with 3-5 carpels, 3-5-locular, with 1(or 2) axile; ovules pendulous, anatropous to hemitropous, placentation axile; styles 1-3 or 5, distinct or somewhat connate; stigmas oblique. Fruit a capsule or a 1-seeded drupe. Seeds with straight embryo and copious (rarely absent) endosperm.

Ten genera and ca. 300 species: widely distributed in the tropical and subtropical zone, especially South America; two genera and three species (one introduced) in China.

Huang Chengchiu, Huang Baoxian & Xu Langran. 1998. Erythroxylaceae. In: Xu Langran & Huang Chengchiu, eds., Fl. Reipubl. Popularis Sin. 43(1): 109-115.

1Flowers often heterostylous; ovary 3-locuar but only 1 locule fertile; styles 3, distinct or somewhat connate; fruit a drupe.1  Erythroxylum    古柯属
+Flowers not heterostylous; ovary 5-locular; styles simple; fruit a capsule.2  Ixonanthes    粘木属
   Lower Taxon
  • Erythroxylum  P. Browne  古柯属
  • Ixonanthes  Jack  粘木属