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Amaranthus cruentus L.
Amaranthus paniculatus var cruentus L Moq; Amaranthus hybridus subsp cruentus L Thell; Amaranthus hybridus var cruentus L Mansf; Amaranthus paniculatus L; Purple Amaranth; Amaranthus hybridus subsp cruentus (L) Thell; Amaranthus hybridus subsp incurvatus (Timeroy ex Gren & Godr) Brenan; Red amaranth

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Following modified from Plants Database, United States Department of Agriculture
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http://plants.usda.gov/java/profile?symbol=AMCR4 ---> https://plants.usda.gov/java/profile?symbol=AMCR4
https://plants.usda.gov/java/profile?symbol=AMCR4 ---> http://plants.usda.gov/core/profile?symbol=AMCR4
http://plants.usda.gov/core/profile?symbol=AMCR4 ---> https://plants.usda.gov/core/profile?symbol=AMCR4
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Amaranthus cruentus L.
red amaranth

Image of Amaranthus cruentus

General Information
Symbol: AMCR4
Group: Dicot
Family: Amaranthaceae
Duration: Annual
Growth Habit : Forb/herb
Native Status : CAN   I
HI   I
L48   I
PR   I
Data Source and Documentation
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green round image for nativity Native blue round image for introduced Introduced ocre round image for introduced and nativity Both white round image for no status Absent/Unreported
image for native, but no county data Native, No County Data image for introduced, but no county data Introduced, No County Data both introduced and native, but no county data Both, No County Data
Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Navassa Island NAV    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM    North America NA   


click on a thumbnail to view an image, or see all the Amaranthus thumbnails at the Plants Gallery

Tracey Slotta. Provided by ARS Systematic Botany and Mycology Laboratory . United States, CA, Chulavista. Usage Requirements .



Symbol Scientific Name
AMHYC Amaranthus hybridus L. ssp. cruentus (L.) Thell.
AMHYC2 Amaranthus hybridus L. var. cruentus (L.) Moq.
AMPA10 Amaranthus paniculatus L.


Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Magnoliopsida – Dicotyledons
Subclass Caryophyllidae
Order Caryophyllales
Family Amaranthaceae – Amaranth family
Genus Amaranthus L. – pigweed
Species Amaranthus cruentus L. – red amaranth

Subordinate Taxa

This plant has no children

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Wetland Status

Interpreting Wetland Status

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ARS Germplasm Resources Information Network (AMCR4)
CalPhotos (AMCR4)
Flora of North America (AMCR4)
Integrated Taxonomic Information System (AMCR4)
Integrated Taxonomic Information System (AMHYC)
Integrated Taxonomic Information System (AMHYC2)
Integrated Taxonomic Information System (AMPA10)
Jepson Interchange (University of California - Berkeley) (AMCR4)
Native American Ethnobotany (University of Michigan - Dearborn) (AMCR4)
University of Wisconsin - Stevens Point Freckmann Herbarium (AMCR4)



Source Large Mammals Small Mammals Water Birds Terrestrial Birds


Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover

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Following modified from Flora of North America
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Link to Flora of North America home
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FNA Vol. 4 Page 423 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 4 | Amaranthaceae | Amaranthus

15. Amaranthus cruentus Linnaeus, Syst. Nat. ed. 10. 2: 1269. 1759.

Blood amaranth, purple amaranth, caterpillar amaranth

Amaranthus hybridus Linnaeus subsp. cruentus (Linnaeus) Thellung

Plants almost glabrous or slightly pubescent distally, especially when young. Stems erect, green or reddish purple, branched distally, mostly in inflorescence, to nearly simple, 0.4-2 m. Leaves: petiole 1 /2 as long as to ± equaling blade; blade rhombic-ovate or ovate to broadly lanceolate, 3-15(-20) × 1.5-10(-15) cm, occasionally larger in robust plants, base cuneate to broadly cuneate, margins entire, plane, apex acute or subobtuse to slightly emarginate, with mucro. Inflorescences terminal and axillary, erect, reflexed, or nodding, usually dark red, purple, or deep beet-red, less commonly almost green or greenish red, leafless at least distally , large and robust. Bracts narrowly spathulate, 2-3 mm, equaling or slightly longer than tepals, apex short-spinescent. Pistillate flowers: tepals 5, oblong to lanceolate, not clawed, equal or subequal, 1.5-3 mm, apex acute; style branches erect or slightly reflexed; stigmas 3. Staminate flowers at tips of inflorescences; tepals 5; stamens (4-)5. Utricles obovoid to elongate-obovoid, 2-2.5 mm, smooth or slightly rugose distally, dehiscence regularly circumscissile. Seeds usually white or ivory, with reddish or yellowish tint, sometimes dark brown to dark reddish brown, broadly lenticular to elliptic-lenticular, 1.2-1.6 mm diam., smooth or indistinctly punctate.

Flowering summer-fall. Near places of cultivation; Ariz., Calif., Conn., Ill., Ind., Ky., Maine, Md., Mass., Mich., Nebr., N.H., N.J., N.Y., N.C., Ohio, Oreg., Pa., R.I., S.C., Tex., Utah, Vt., Wash., W.Va., Wis.; Central America; South America; cultivated widely.

Amaranthus cruentus is cultivated as ornamental and pseudocereal almost worldwide from tropical to warm-temperate regions. While reported as naturalized in several states, most specimens identified as this species are referable to A. hybridus or other native species. Escaped plants of A. cruentus sometimes occur near places of cultivation (see note under A. caudatus ). No attempt has been made to summarize distribution data for such escapes.

Amaranthus cruentus originated from A. hybridus (most probably in cultivation in Central America), with which it shares almost all major morphologic characteristics. Inclusion of cultivated forms in A. hybridus in a broad sense is thus rather justified. Cultivated species traditionally have been treated as separate taxa in horticultural and agricultural literature, and we prefer to maintain the current convenient usage of these names.

Following modified from CalPhotos
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http://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Amaranthus+cruentus&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant ---> https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Amaranthus+cruentus&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant

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Number of matches : 5
Query: SELECT * FROM img WHERE ready=1 and taxon like "Amaranthus cruentus%" and (lifeform != "specimen_tag" OR lifeform != "Plant") ORDER BY taxon

Click on the thumbnail to see an enlargement

Amaranthus cruentus
Amaranthus cruentus
Red Amaranth
ID: 0000 0000 1018 0330 [detail]
© 2018 Zoya Akulova

Amaranthus cruentus
Amaranthus cruentus
Red Amaranth
ID: 0000 0000 1018 0331 [detail]
© 2018 Zoya Akulova

Amaranthus cruentus
Amaranthus cruentus
Red Amaranth
ID: 0000 0000 1018 0332 [detail]
© 2018 Zoya Akulova

Amaranthus cruentus
Amaranthus cruentus
Red Amaranth
ID: 0000 0000 1018 0333 [detail]
© 2018 Zoya Akulova

Amaranthus cruentus
Amaranthus cruentus
Red Amaranth
ID: 0000 0000 1018 0334 [detail]
© 2018 Zoya Akulova

Using these photos: A variety of organizations and individuals have contributed photographs to CalPhotos. Please follow the usage guidelines provided with each image. Use and copyright information, as well as other details about the photo such as the date and the location, are available by clicking on the [detail] link under the thumbnail. See also: Using the Photos in CalPhotos .   

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Updated: 2018-12-12 19:03:04 gmt
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