Flora of the Hawaiian Islands
Dicotyledon Literature for Euphorbia haeleeleana
Wagner et al., 1990, 1999.
   Euphorbiaceae -- The Spurge Family Bibliography
      Euphorbia haeleeleana
General Information
DistributionIn the Hawaiian Islands, endemic to Kaua`i, O`ahu.

Click here for detailed USGS map by Jonathan Price
Small dioecious trees 3-14 m tall; branches thick, succulent, terminating bluntly at apex, leaf scars prominent on young branches.
Leaves alternate, chartaceous, elliptic, blades (7-)10-15(-20) cm long, (3.2-)4-6(-8.2) cm wide, glabrous or occasionally hirsutulous, margins entire, apex obtuse to retuse, base obtuse, petioles (1.5-)2-4(-5.3) cm long, stipules absent.
Cyathia axillary, subtended by deciduous bracts ca. 1 mm long, forming a terminal pseudoumbel from reduction of internodes, peduncles 11-30 mm long, hirsute, sometimes with V-shaped glands 1-6 mm below the cyathium, these ca. 1 mm long; involucre truncate, 4-5 mm high, 7-9 mm wide, hirsute, glands (8)9(-11), dark brown, sometimes mottled, 1.5-2.5 mm long, ca. 1 mm wide, densely hirsute below; male flowers numerous, filaments 1 mm long, subtended by densely ciliate bracts ca. 3 mm long; female flower subtended by several diminutive and abortive staminate flowers, each with a small bract; style ca. 4 mm long; stigmas ca. 1 mm long, bifid.
Capsules brown when dry, globose, 11-14 mm in diameter, hirsute, gynophores (1-)3.5-8 mm long.
Seeds dark brown, mottled, ovoid, obscurely angled, 7-9 mm long, ca. 5 mm wide, caruncle white or cream-colored, ca. 1 mm long.