RhamnaceaeBuckthorn family






Identification
  - Leaves simple, alternate, entire or serrate, distichous.
  - With stipules.
  - Lateral veins straight and parallel.
  - Pair of nectar glands on base of blade (one species).
  - Flowers small, 5-parted, in small axillary inflorescences.
  - Fruit a small drupe or capsule with three valves.

Diagnosis: Trees and lianas, with stipules, leaves distichous, simple, alternate, elliptic, entire or serrate, straight and parallel lateral veins, one species with two sessile nectar glands on underside of blade at base (Colubrina).

Similar families
Betulaceae: two teeth per lateral vein.
Euphorbiaceae: unequal leaf base, inconspicuous stipule scars, clear sap in petiole.
Rosaceae(Prunus): bitter almond odor in twigs and bark, flat nectar glands on blade.
Ticodendraceae: stipule scar circles twig, brown-black dead leaves on ground.
Ulmaceae: scratchy simple hairs, leaf base unequal, stringy bark.

Diversity: Total: 3 genera, 3 species. Trees: 2 genera, 2 species.



Credits: Images and text copyright 2000-2007, William A. Haber, http://efg.cs.umb.edu/