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|Jepson eFlora: Taxon page
Key to families | Table of families and genera
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|Family: Haloragaceae||View Description||Dichotomous Key|
|Genus: Myriophyllum||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Myriophyllum aquaticum (Vell.) Verdc.
Habit: Dioecious; winter buds 0. Stem: < 1 m, bright green to +- gray-green, leafy throughout. Leaf: submersed leaves 1.5--3.5 cm, length 3--4 × width, segments 20--30 per leaf, +- 7 mm. Inflorescence: terminal, generally emergent. Staminate Flower: stamens 8; ovary vestigial. Pistillate Flower: stamens 0. Fruit: generally 0 (in California).
Ecology: Common. Ponds, streams, lakes; Elevation: < 500 m. Bioregional Distribution: NCo, NCoR, CaRF, SNF, GV, CCo, SnFrB, SCo, DMoj; Distribution Outside California: southern and eastern United States, warm temperate, tropics worldwide; native to South America. Flowering Time: Jul--Sep Note: Plants generally pistillate (staminate unknown in California), clonal; forms dense colonies with emergent branches; escaped from original plantings as ornamental.
eFlora Treatment Author: Adolf Ceska & Oldriska Ceska
Jepson Online Interchange
Weed listed by Cal-IPC
Previous taxon: Myriophyllum
Next taxon: Myriophyllum hippuroides
Citation for this treatment: Adolf Ceska & Oldriska Ceska 2016. Myriophyllum aquaticum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=34261, accessed on April 30, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on April 30, 2016.