Overview

Comprehensive Description

Miscellaneous Details

"Notes: Dry deciduous forests, also in the Plains, Naturalized, Native of Tropical America"
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Brief

Flowering class: Dicot Habit: Herb
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Distribution

"
Global Distribution

Pantropical

Indian distribution

State - Kerala, District/s: Palakkad, Alappuzha, Idukki, Malappuram, Kollam, Thiruvananthapuram, Kozhikkode, Thrissur

"
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"Karnataka: Belgaum, Chikmagalur, Hassan, Mysore, N. Kanara, Shimoga Kerala: Alapuzha, Idukki, Kollam, Kozhikode, Malapuram, Palakkad, Thiruvananthapuram, Thrissur Tamil Nadu: All districts"
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Distribution in Egypt

Gebel Elba.

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Global Distribution

Native to tropical south America, naturalized in Cape Verde Islands, tropical Africa, southeast Egypt, Arabia, India, China, Sri Lanka, Burma, Singapore, Australia and probably elsewhere.

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A pantropic weed.
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Physical Description

Morphology

Elevation Range

300-1700 m
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Diagnostic Description

Diagnostic

"Erect herbs, pilose. Upper leaves alternate, 5-8 x 2-3.5, ovate, apex acuminate, base rounded, 3-ribbed, crenate, pubescent; petiole 1 cm, pilose. Capitulum solitary, 4-5 mm across; palea 5-6 mm; peduncles to 1.5 cm; phyllaries 5 x 2 mm, ovate-oblong, pubescent; ray florets 2 mm across; disc florets 2 mm across. Achenes truncate, 3.5 mm, black; pappus of 3-4 bristles, 1 mm."
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Diagnostic

Habit: Herb
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Type Information

Type fragment for Blainvillea polycephala Gardner
Catalog Number: US 1803504
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Original publication and alleged type specimen examined
Preparation: Pressed specimen
Collector(s): G. Gardner
Locality: Minas Gerais, Brazil, South America
  • Type fragment: Gardner, G. 1848. London J. Bot. 7: 89.
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Ecology

Habitat

General Habitat

"Dry deciduous forests, also in the plains"
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Moist ground, around wells.

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Life History and Behavior

Cyclicity

Flowering and fruiting: April-November
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Life Expectancy

Annual.

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