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Rivina humilis

(Bloodberry Geon Berry)

Overview

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Small, weedy herbaceous shrub from Central and South America with small clusters of tiny white flowers and bright orange or red berries less than a quarter of an inch in diameter. The berries yield a red dye and are reportedly poisonous to eat. In Mexico leaves have been used to treat wounds.

Interesting Facts

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Common Names

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Click on the language to view common names.

Common Names in Afrikaans:

Bloedbessie

Common Names in Chinese:

Shu Zhu Shan Hu

Common Names in English:

Baby Pepper, Bloodberry, Bloodberry Geon Berry, Bloodberry Rougeplant, Pigeonberry, Rouge Plant, Rougeplant, Small Pokeweed

Common Names in French:

Coralito

Common Names in Spanish:

Coralito

Description

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Family Phytolaccaceae

Herbs or shrubs , rarely trees , erect , rarely scandent , mostly glabrous , rarely dioecious. Leaves simple , alternate, entire; stipules absent or tiny. Inflorescences terminal , axillary , or leaf-opposed, racemose, cymose , panicled , or spicate . Flowers small, bisexual or rarely unisexual , actinomorphic , rarely zygomorphic. Tepals 4 or 5, persistent , free or connate at base , equal or unequal, imbricate in bud, green or sometimes other colored . Stamens 4 to many, inserted on a fleshy disk; filaments usually persistent, free or slightly connate at base; anthers 2-loculed, dorsifixed , longitudinally dehiscent . Ovary superior, globose ; carpels 1 to many, free or connate; ovule solitary in each carpel, basal, campylotropous. Styles persistent, short or absent, erect or curved , as many as carpels. Fruit fleshy, a berry or drupe, rarely a capsule. Seeds reniform or oblate , small; testa membranous or hard and fragile, smooth or wrinkly; embryo large, curved, surrounding copious mealy endosperm.

Seventeen genera and ca. 70 species: widespread in tropical and temperate regions , especially in the neotropics and S Africa; two genera (one introduced ) and five species (one endemic, two introduced) in China.[1]

Genus Rivina

Herbs or subshrubs , perennial , woody at base . Leaves alternate. Inflorescences axillary or terminal racemes , 5-50-flowered. Flowers: sepals 4; stamens 4; carpel 1, ovary 1-loculed; style present; stigma 1, capitate. Fruits berries , red to orange or yellow, subglobose. Seed 1.

Species 1: North America, Mexico, West Indies, Central America, South America, Asia, Pacific Islands, Australia.

The fruits of Rivina have been called berries, drupes, or, by those unwilling to commit themselves, simply fruits. The most recent study of fruit morphology and anatomy (D. D. Nautiyal and S. C. Gupta 1984) uses the term "berry."[2]

Physical Description

Species Rivina humilis

Plants erect , straggling, or vinelike, 0.4-2 m , ± glabrous or densely pubescent . Leaves: petiole 1-11 cm; blade lanceolate, elliptic , or oblong to deltate or ovate , to 15 × 9 cm, base cuneate or rounded to truncate or cordate, apex acuminate or acute to obtuse or emarginate . Racemes 4-15 cm; peduncle 1-5 cm; pedicel 2-8 mm. Flowers: sepals white or green to pink or purplish, elliptic or oblong to oblanceolate or obovate , 1.5-3.5 mm; style often curved . Berries 2.5-5 mm diam. Seeds lenticular , 2-3 mm, enclosed in thin, densely pubescent membranes. 2n = 108. [source]

During enlargement and maturation of the fruit of Rivina humilis, the two inner cell layers of the pericarp become separated from the outer layers. The cells of the outermost two layers elongate centrifugally, eventually forming tubular trichomes 133-229 µm long. These two layers become appressed and adherent to the seed coat ; thus the seed appears to be, and is sometimes described as, pubescent (J. W. Thieret 1966b). The outer layers of the pericarp differentiate into the juicy portion of the fruit (L. B . Kajale 1954; D. D. Nautiyal and S. C. Gupta 1984). [source]

Habit: Forb/herb, Subshrub , Vine

Flowers: Bloom Period: January, February, March, April, May, June, July, August, September, October, November, December. • Flower Color: near white, pink, white

Size/Age/Growth

Size: 6-12" tall.

Habitat

Woods , hammocks , thickets, shell ridges , roadsides, disturbed areas; 0-1700 m [3].

Biology

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Reproduction

Duration: Perennial

Growth

Culture: Space 24-36" apart.

Soil: Minimum pH: 5.6 • Maximum pH: 8.5

Sunlight: Sun Exposure: Light Shade.

Temperature: Cold Hardiness: 7a, 7b, 8a, 8b, 9a, 9b, 10a, 10b. (map)

Taxonomy

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Unambiguous Synonyms

  1. R. portulaccoides Nuttall

Notes

Name Status: Accepted Name . Latest taxonomic scrutiny: 15-Mar-2000

Place of publication : Sp. pl. 1:121. 1753

Name verified on 12-Mar-2004 by ARS Systematic Botanists. Last updated: 12-Mar-2004

Similar Species

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Members of the genus Rivina

ZipcodeZoo has pages for 43 species, subspecies, varieties, forms, and cultivars in this genus:

R. acuminata · R. alliacea · R. apetala · R. aurantiaca · R. bengalensis · R. brasiliensis · R. canescens · R. densiflora · R. dodecandra · R. glabrata · R. gracilis · R. herbacea · R. humilis (Bloodberry Geon Berry) · R. humilis L. 'Aurantiaca' · R. humilis L. 'Rubra' · R. humilis var. canescens · R. humilis var. glabra · R. humilis var. laevis · R. humilis var. plumbaginifolia · R. humilis var. puberula · R. humilis var. scandens · R. inaequalis · R. laevis · R. laevis f. brasiliensis · R. lanceolata · R. latifolia · R. moritziana · R. octandra · R. octandra var. obtusifolia · R. paniculata · R. paraguayensis · R. peruviana · R. polyandra · R. portulaccoides · R. procumbens · R. puberula · R. purpurascens · R. roseo-aenea · R. roseoaenea · R. scandens · R. secunda · R. tinctoria · R. viridiflora

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal November 22, 2007:

Identifiers

Footnotes

  1. Dequan Lu & Kai Larsen "Phytolaccaceae". in Flora of China Vol. 5 Page 435. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
  2. "Rivina". in Flora of North America Vol. 4 Page 3, 4, 9. Oxford University Press. Online at EFloras.org. [back]
  3. "Rivina humilis". in Flora of North America Vol. 4 Page 10. Oxford University Press. Online at EFloras.org. [back]
Last Revised: 7/1/2009