Overview

Comprehensive Description

Description

Decumbent, branching, sparsely pubescent, perennial herb to 50 cm. Leaves subsessile; lamina up to 3 × 1.5 cm, 3-5-lobed, narrowly ovate, becoming smaller and narrower and less lobed above, sparsely pilose or glabrescent. Capitula c.8 mm wide, hemispheric. Phyllaries 4 mm, c. 2-seriate. Rays white, pink outside, up to 5 mm. Achenes 1-1.5 mm, ellipsoid, pilose. Pappus c. 2.5 mm.
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Derivation of specific name

karvinskianus: probably after Baron Wilhelm Friedrich Karwinski von Karwin (Karvin) (1780-1855), Hungarian-born German naturalist and plant collector in Brazil and Mexico.
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Miscellaneous Details

"Notes: Western Ghats & Eastern Ghats, Naturalized, Native of Tropical America"
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Brief

Flowering class: Dicot Habit: Herb Distribution notes: Exotic
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Distribution

Worldwide distribution

Probably native to Mexico but widely naturalized in the New World and many tropical islands.
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National Distribution

United States

Origin: Exotic

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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"Maharashtra: Pune, Raigad, Satara Karnataka: Chikmagalur, Coorg, Mysore, Shimoga Kerala: Idukki, Kottayam, Thiruvananthapuram Tamil Nadu: Coimbatore, Dindigul, Erode, Kanniyakumari, Nilgiri, Salem, Theni, Tirunelveli, Virudhunagar"
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"
Global Distribution

Neotropics, Mexico to Venezuela, Chile and the Antilles

Indian distribution

State - Kerala, District/s: Idukki, Thiruvananthapuram, Wayanad

"
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A native of Mexico, now naturalised in Europe, Himalaya (Nepal to Bhutan), India and Japan.
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Physical Description

Morphology

Description

Perennials, often short-lived , 10–100 cm; fibrous- or taprooted, caudices woody, usually simple, stems sometimes rooting adventitiously. Stems erect to sprawling or decumbent (small leaf tufts in axils of larger leaves), sparsely strigose to glabrate, eglandular. Leaves basal (and proximal cauline withering by flowering) and cauline; cauline blades elliptic to obovate, mostly 10–40(–50) × 5–13 mm, usually relatively even-sized along stems, margins entire or with 1–2 distal pairs of acute, mucronulate teeth or lobes, faces sparsely and loosely strigose to hirsuto-villous, eglandular. Heads 1–5 (usually from branches distal to midstem). Involucres 2.5–3.5 × 7–10 mm. Phyllaries in 3–4 series, sparsely strigose to hirsuto-villous or glabrate, sometimes minutely glandular. Ray florets 45–80; corollas 5–8 mm, laminae not or slightly coiling, white, sometimes drying pinkish. Disc corollas 2–3.1 mm. Cypselae 1–1.4 mm, 2-nerved, faces sparsely strigose; pappi: outer of setae, inner of 15–27 bristles. 2n = 18, 27, 36 (from Mexico, Central America, South America).
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Elevation Range

2100 m
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Diagnostic Description

Diagnostic

"Sprawling perennial herbs usually forming dense clumps; stems numerous, decumbent to weakly erect, slender, usually branched, glabrate to sparsely pubescent. Leaves 1-4 x 0.1-l cm, linear to elliptic, entire to dentate or shallowly lobed, lower ones often oblanceolate and 3-lobed. Heads solitary, 1-1.5 cm in diameter; involucral bracts in 3 series, linear, 3-6 mm long; ray florets 75-100 or more per head, rays white, becoming pink with age, 9-10 mm long; disk florets numerous, corollas yellow. Achenes pale brown, ca. 1 mm long."
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Diagnostic

Habit: Herb
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Synonym

Erigeron mucronatus de Candolle
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Type Information

Isolectotype for Erigeron irazuense Greenm.
Catalog Number: US 577966
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): H. Pittier
Year Collected: 1900
Locality: Volcan Irazu, Costa Rica, Central America
  • Isolectotype: Greenman, J. M. 1904. Proc. Amer. Acad. Arts. 40: 36.; Bouffod, D. E. & Nesom, G. L. 1990. Phytologia. 69: 385.
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Isolectotype for Erigeron irazuense Greenm.
Catalog Number: US 577966
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): H. F. Pittier
Year Collected: 1900
Locality: Volcan Irazu, Costa Rica, Central America
  • Isolectotype: Greenman, J. M. 1904. Proc. Amer. Acad. Arts. 40: 36.; Bouffod, D. E. & Nesom, G. L. 1990. Phytologia. 69: 385.
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Ecology

Habitat

General Habitat

Moist grasslands
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Associations

In Great Britain and/or Ireland:
Foodplant / parasite
Podosphaera fusca parasitises live Erigeron karvinskianus

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Population Biology

Frequency

Locally common
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Life History and Behavior

Cyclicity

Flowering and fruiting: Throughout the year
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Erigeron karvinskianus

The following is a representative barcode sequence, the centroid of all available sequences for this species.


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Statistics of barcoding coverage: Erigeron karvinskianus

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 2
Specimens with Barcodes: 2
Species With Barcodes: 1
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Conservation

Conservation Status

National NatureServe Conservation Status

United States

Rounded National Status Rank: NNA - Not Applicable

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NatureServe Conservation Status

Rounded Global Status Rank: G5 - Secure

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Management

These species are introduced in Switzerland.
  • Aeschimann, D. & C. Heitz. 2005. Synonymie-Index der Schweizer Flora und der angrenzenden Gebiete (SISF). 2te Auflage. Documenta Floristicae Helvetiae N° 2. Genève.   http://www.crsf.ch/ External link.
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Wikipedia

Erigeron karvinskianus

Erigeron karvinskianus is a species of flowering plant in the family Asteraceae known by the common names Mexican fleabane, Latin American fleabane, Santa Barbara daisy or Spanish daisy. This wildflower is native to much of South America and also Mexico, and is naturalized in many other places, including parts of Africa, Europe, New Zealand, and the west coast of the United States. This is a vigorous, spreading perennial plant growing from woody rhizomatous roots to a maximum height of 15cm. Its leaves are located along the stem, the basal leaves dying off as the plant bolts. They are sometimes slightly toothed or lobed near the tips. The inflorescences hold one or more flower heads which are each about 1 cm wide. They have golden yellow disc florets in the center and a fringe of up to 80 white to pinkish ray petals.

This plant is also cultivated for its daisy-like blooms, and is often confused with the closely related true daisy Bellis. It is frequently grown in crevices in walls or paving, where it rapidly spreads to provide a carpet of flowers.[1] It has gained the Royal Horticultural Society's Award of Garden Merit.[2]

  1. ^ RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 1405332964. 
  2. ^ "Erigeron karvinskianus AGM". Royal Horticultural Society. Retrieved 26 July 2013. 

Gallery[edit source | edit]

Flower of Erigeron karvinskianus
Flowers of Erigeron karvinskianus
Leaves of Coleostephus myconis
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Notes

Comments

Erigeron karvinskianus is most abundant in tropical and subtropical regions; it is widely cultivated and escaped.
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