|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Amaranthaceae||View Description||Dichotomous Key|
|Genus:||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Habit: [Annual] perennial herb, aquatic to terrestrial. Stem: prostrate or ascending; hairs simple. Leaf: opposite, subsessile to short-petioled, blade margins entire to serrate. Inflorescence: axillary or axillary and terminal, sessile or peduncled, many-flowered cylindric spikes or spheric heads; bracts and bractlets persistent, scarious. Flower: bisexual; perianth parts 5, free, +- equal or not, scarious, persistent, white, glabrous or woolly; stamens 3--5, fused at base into short tube or cup, anthers 2-chambered; pseudostaminodes 5, alternate with stamens; ovary obovoid to +- spheric; style short, +- 0.2 mm; stigma spheric (2-lobed), ovule 1, pendent. Fruit: indehiscent; fruit wall membranous. Seed: 1, lenticular or ovoid-oblong, +- red brown, smooth, shiny.
Species In Genus: +- 170 species: generally tropical America. Etymology: (Latin: alternating pseudostaminodes and stamens) Note: Alternanthera sessilis (L.) DC. occasionally a greenhouse weed
eFlora Treatment Author: Mihai Costea
Jepson Online Interchange
Key to AlternantheraPrevious taxon: Amaranthaceae
Next taxon: Alternanthera caracasana
Citation for this treatment: Mihai Costea 2017. Alternanthera, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=9076, accessed on February 21, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 21, 2017.