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|Jepson eFlora: Taxon page
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|Family: Polygonaceae||View Description||Dichotomous Key|
|Genus: Emex||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Emex spinosa (L.) Campd.
Stem: 3--6(8) dm. Leaf: petiole 1.5--4 cm, blade 3--13 cm, 1--12 cm wide. Fruit: perianth 3-angled, each face with 8--12 pit-like depressions, spines 1.5--3 mm.
Ecology: Dry, sandy, disturbed places; Elevation: < 500 m. Bioregional Distribution: CCo, SCo; Distribution Outside California: Massachusetts, New Jersey, Florida, Texas; also Hawaii, South America, Eurasia, Africa, Australia; native to Mediterranean. Flowering Time: May--Dec Note: Cleistogamous flowers produced underground.
Unabridged Note: According to Art Gibson, plants behind the dunes at Zuma Beach have basal leaves as well as dimorphic fruits, with those in the axils of basal leaves often spineless as well as larger than the others.
eFlora Treatment Author: Mihai Costea
Jepson Online Interchange
Previous taxon: Emex australis
Next taxon: Eriogonum
Citation for this treatment: Mihai Costea 2017. Emex spinosa, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=24222, accessed on March 27, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on March 27, 2017.