Species
Cirsium brevistylum
Etymology
Cirsium: a kind of thistle
Common Name(s)
woolly-headed thistle.
Family
Asteraceae
Flora Category
Vascular - Exotic
Structural Class
Dicotyledonous Herbs - Composites
Habitat
Terrestrial. Grassland, Pastures, Riverflats, roadsides, waste land
Features
Taprooted perennialPerennial:
A plant lasting for three seasons or more
Lanceolate:
Lance-shaped; of a leaf several times longer than wide with greatest width about one third from the base, tapering gradually to apex and more rapidly to base
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Elliptic:
Broadest at the middle
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Pinnatifid:
Pinnately lobed, cleft more than halfway to the midrib. Not cleft all the way to the rachis.
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Tomentum:
A hairy covering of short closely matted hairs.
Deltoid:
Shaped broadly like an equilateral triangle.
Capitula:
Plural of capitulum: A dense head-like inflorescence of many flowers as occurs in most Asteraceae (daisies)
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Ovoid:
Oval; egg-shaped, with rounded base and apex.
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Involucral bracts:
The scales surrounding the flower head or capitula.
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Deltoid:
Shaped broadly like an equilateral triangle.
Lanceolate:
Lance-shaped; of a leaf several times longer than wide with greatest width about one third from the base, tapering gradually to apex and more rapidly to base
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Apex:
Tip; the point furthest from the point of attachment.
Acuminate:
Gradually tapered to a point. Sharply pointed.
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Patent:
Spreading or expanded, e.g., spreading petals.
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Involucral bracts:
The scales surrounding the flower head or capitula.
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Linear:
Long and narrow with more or less parallel sides.
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Apex:
Tip; the point furthest from the point of attachment.
Acute:
Pointed or sharp, tapering to a point with straight sides.
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Corolla:
The whorl of petals of a flower.
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Style:
The elongated part of the flower between the ovary and the stigma.
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Cilia:
Short small hair-like structures on a cell or microorganism
Similar TaxaTaxa:
Taxonomic groups. Used to refer to a group at any level e.g., genus, species or subspecies.
Stems not winged; laminaLamina:
The expanded flattened portion or blade of a leaf, fern frond or petal.
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Corolla:
The whorl of petals of a flower.
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Stigma:
Female part of the flower that is receptive to pollen, usually found at or near the tip (apical end) of the style where deposited pollen enters the pistil.
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Corolla:
The whorl of petals of a flower.
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Flowering
December, January (February)
Flower Colours
Red / Pink,Violet / Purple
Fruiting
(December) - January - February
Year Naturalisednaturalised:
Referring to plants that have escaped from cultivation (including gardens or forest plantations) and can now reproduce in the wild (without human assistance)
1899
Origin
W. N. America
Reason For Introduction
Accidental
Life Cycle Comments
PerennialPerennial:
A plant lasting for three seasons or more
This page last updated on 18 Jan 2010