|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
|Family: Amaranthaceae||View Description||Dichotomous Key|
|Genus: Amaranthus||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Amaranthus caudatus L.
Habit: Monoecious. Stem: erect, 3--20 dm, branched or not, red or purple-tinged, moderately hairy distally. Leaf: petiole (3)5--8 cm; blade 25--150(200) mm, 10--80 mm wide, rhombic-ovate to widely lanceolate, base wedge-shaped, tip acute, margins flat or +- wavy. Inflorescence: terminal panicle, generally many-branched at base, generally with a main drooping or nodding axis, 10--30(50) cm, 0.8--3 cm wide (including flowers), red or purple, white or yellow; bracts 3--4 mm, <= perianth, <= stigmas, spine-like, narrowly lanceolate. Flower: staminate flowers generally at inflorescence tips, perianth parts 5, 2.3--2.7 mm, lance-ovate, stamens 5; pistillate perianth parts 5, 1.8--2.5(3) mm, widely spoon-shaped, margins overlapping, tip obtuse to rounded; stigmas 3, spreading. Fruit: circumscissile; 1.5--2.5 mm, >= perianth, +- spheric to ovoid, +- purple to brown-yellow, lid weakly longitudinally wrinkled. Seed: 1.1--1.5 mm, +- spheric, +- white, obscurely dotted, or lenticular, dark +- red to black, smooth. Chromosomes: 2n=32.
Ecology: Disturbed areas; Elevation: < 200 m. Bioregional Distribution: s ScV, SCo, expected elsewhere; Distribution Outside California: to eastern United States and southern Canada, Asia, Europe, Africa; native to central and western South America. Flowering Time: Jul--Oct Note: Ornamental, pseudocereal and vegetable; occasionally escapes from cultivation.
eFlora Treatment Author: Mihai Costea
Jepson Online Interchange
Previous taxon: Amaranthus californicus
Next taxon: Amaranthus cruentus
Citation for this treatment: Mihai Costea 2016. Amaranthus caudatus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=12911, accessed on May 01, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 01, 2016.