genus Trapa


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Noun1.genus Trapa - small genus of Eurasian aquatic perennial herbs: water chestnutgenus Trapa - small genus of Eurasian aquatic perennial herbs: water chestnut
dicot genus, magnoliopsid genus - genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination
family Trapaceae, Trapaceae - family comprising solely the genus Trapa; in some classifications treated as a subfamily or tribe of the family Onagraceae
water chestnut, water chestnut plant, caltrop - a plant of the genus Trapa bearing spiny four-pronged edible nutlike fruits
References in periodicals archive ?
2002) and proposed as ancestral to the water chesnut genus Trapa by way of a putative intermediate form, the extinct genus Hemitrapa Miki (1959).
Hemitrapa is an extinct genus once distributed in Eurasia and North America and related to, possibly ancestral to, the genus Trapa.
Since "most of the similarities to the living genus Trapa are common to a large number of only distantly related aquatic angiosperms" (Cook, 1978, cited in Stockey & Rothwell, 1997), determining true relationships of these putative relatives is difficult.