Flora of the Hawaiian Islands
Monocotyledon Literature for Coix lacryma-jobi
Wagner et al. 1990, 1999; Lorence & Wagner, 2019.
   Poaceae -- The Grass Family Bibliography
      Coix lacryma-jobi

Common name(s): Job's tears, `ohe`ohe, kukaekolea, pu`ohe`ohe, pupu kolea
General Information
DistributionNative to Asia, naturalized throughout the tropics.In the Hawaiian Islands, naturalized on Kaua`i, O`ahu, Moloka`i, Maui, Hawai`i.

Robust annual; culms 100-300 cm tall, many-branched.
Leaves with loose sheath, terete, striate, glabrous; ligule membranous, 1.5‒2 mm long, margin erose and minutely fringed; blade 10‒50 cm long, 1.5‒7 cm wide, glabrous, but rather coarse.
Inflorescences numerous, terminal and axillary, each consisting of separate pistillate and staminate racemes, utricles borne on long stout peduncle from axis of distal leaves, white, gray or bluish, bony, lustrous, globose-ovoid, 7‒11 mm long. Distal pistillate floret fertile, lemma scalelike, 3‒5-veined; palea reduced to a small scale; staminodia 3; staminate raceme 3‒5 cm long, spikelets 7‒11 mm long, glumes equal to the spikelet in length, coriaceous-membranous, broadly lanceolate, glabrous, smooth, lemma membranous, lanceolate, 3-veined, glabrous, palea similar in shape and texture to lemma, 2-veined.
Caryopses orbicular, ventrally furrowed, enclosed in the hard,shiny, white to dark gray, broadly ellipsoid to subglobose utricle 7‒11 mm long, 6‒10 mm in diameter.
2n = 10, 20
Warren Wagner