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Tridax procumbens

(Cadillo Chisaca)

Overview

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Annual or perennial weed from Central America, with solitary, long-stalked, yellow or yellow and white flowering heads . Leaves used as insecticide in Central America.

Interesting Facts

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Common Names

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Click on the language to view common names.

Common Names in English:

Cadillo Chisaca, Coat Buttons, Coat-Buttons, Coatbuttons, Tridax, Tridax Daisy

Common Names in Informal Latinized N:

Tridax

Common Names in Portuguese:

Erva-De-Touro

Common Names in Spanish:

Cadillo Chisaca

Description

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Family Compositae

The largest family of flowering plants , the Compositae (Asteraceae), comprising about 1,100 genera and more than 20,000 species and characterized by many small flowers arranged in a head looking like a single flower and subtended by an involucre of bracts. A head may consist of both ray flowers and disk flowers, as in the sunflower, of disk flowers only, as in the burdock, or of ray flowers only, as in the dandelion.

Tribe Heliantheae

The Heliantheae are a tribe of closely related genera of the sunflower family that can be readily recognized due to the association of a receptacular bract or chaff scale with each disk floret in the head . The heads usually include bisexual , actinomorphic disk florets with tubular corollas that have 4 or 5 distal lobes and also peripheral zygomorphic female or sometimes sterile florets with strap-shaped corollas that have 3 or fewer distal teeth. However, the ray flowers are sometimes absent and the heads are then discoid , containing only bisexual florets with tubular corollas. The pappus is absent or more commonly ranges from scales to stiff bristles . -- Gerald Carr.

Genus Tridax

Perennials [annuals ], 10-40[-80+] cm. Stems procumbent to ascending . Leaves basal and/or cauline; opposite; petiolate [sessile]; blades deltate, lanceolate, lance-ovate, or ovate , often pinnately or palmately lobed , ultimate margins coarsely toothed to subentire , faces glabrate , hirsute , scabrellous, or strigillose . Heads radiate [discoid ], borne singly [in ± cymiform arrays]. Involucres cylindric to hemispheric , 4-8 mm diam. Phyllaries persistent , 11-15+ in 2-3+ series (outer usually shorter, more herbaceous, the inner often scarious ). Receptacles convex to conic, paleate (paleae ± persistent, lance-linear , scarious, weakly conduplicate , often apically toothed). Ray florets [0-]3-8[-13], pistillate , fertile ; corollas pale yellow [white or purplish]. Disc florets [20-]40-80+, bisexual , fertile; corollas yellowish [whitish or purplish], tubes shorter than cylindric or funnelform throats , lobes 5, usually deltate [sometimes rays 0 and corollas of peripheral florets ± bilabiate]. Cypselae obconic to obpyramidal , 3-, 4-, or 5-angled, densely piloso-sericeous [glabrous , villous ]; pappi [sometimes wanting in rays] persistent, of [10-]20[-40], plumose [ciliate ], setiform scales . x = 10.

Species ca. 26: introduced ; mostly tropical , mostly New World.[1]

Physical Description

Species Tridax procumbens

Leaves: petioles 1-10(-30) mm; blades 10-40(-120) × 5-20(-60) mm, often 3-lobed. Cypselae 2-2.5 mm; pappi 4-5(-7.5) mm. 2n = 36. Flowering Jan-Dec. [source]

Habit: Forb/herb, Subshrub

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

Size/Age/Growth

Size: 6-12" tall.

Habitat

Disturbed sites; 0-10 m ; introduced [2].

Biology

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Reproduction

Duration: Perennial

Growth

Culture: Space 9-12" apart.

Sunlight: Sun Exposure: Full Sun .

Temperature: Cold Hardiness: 8b, 9a, 9b, 10a, 10b, 11. (map)

Taxonomy

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Synonyms

Chrysanthemum procumbens< /i> (L.) Sessé & Moc.

Notes

Name Status: Accepted Name .

Comment: Data Providers: Biological Diversity of the Guiana Shield , CONABIO, Caribbean Checklist , African Flowering Plants Database , SANBI, New Zealand Plant Name Database, Flora of Japan, Flora Malesiana, Flora of Taiwan, Govaerts World Compositae Checklist A-G,. GCC LSID: urn :lsid:compositae.org:names:C2D7811C-813E-4105-BB38-4E93BB24EC9F

Last scrutiny: 16-Aug-09

Similar Species

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Members of the genus Tridax

ZipcodeZoo has pages for 2 species, subspecies, varieties, forms, and cultivars in this genus:

T. parviflora (Gallant Soldier) · T. procumbens (Cadillo Chisaca)

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 11, 2007:

Identifiers

Footnotes

  1. John L. Strother "Tridax". in Flora of North America Vol. 21 Page 176, 177, 179. Oxford University Press. Online at EFloras.org. [back]
  2. "Tridax procumbens". in Flora of North America Vol. 21 Page 179, 180. Oxford University Press. Online at EFloras.org. [back]
Last Revised: 2013-10-29