Family: Asteraceae
Cotula
Citation:
L., Sp. Pl. 891 (1753).
Derivation: Medieval Latin cotula, Greek kotyle, a small cup; referring to the shape of the involucre.
Synonymy: Not Applicable Common name: Cotulas.
Description:
Annual and perennial herbs; leaves mostly cauline, alternate, dentate to pinnate.
Capitula terminal, solitary, pedunculate, discoid, heterogamous or homogamous; involucres hemispherical or broadly cupshaped; bracts herbaceous with membranous margins, imbricate in 2 subequal series; receptacle flat to conical, naked, with persistent pedicels; outer florets female, tubular, 1-many-sedate, rarely absent; corollas filiform or absent; style branches oblong with a papillose apex.
Achenes flattened, stipitate, glabrous; pappus absent; inner florets bisexual, fertile or sterile, tubular, 4-merous; anthers obtuse or acute at the base with ovate or lanceolate apical appendages; style branches oblong, truncate, with a papillose apex, or the style entire in sterile florets; achenes flattened on one side, stipitate, glabrous; pappus absent.
Distribution:
|
About 90 species, chiefly in the Southern Hemisphere, with about 11 in Australia.
|
|
|
Biology:
No text
Key to Species:
|
1. Leaves entire to coarsely pinnatifid |
|
|
|
2. Annual; leaves narrowly linear, entire |
|
C. vulgaris 5. |
|
2. Perennial; leaves oblong, pinnatifid |
|
C. coronopifolia 3. |
|
1. Leaves pinnatisect with lobed segments or bipinnatisect |
|
|
|
3. Leaves distinctly villous |
|
C. australis 1. |
|
3. Leaves glabrous or slightly pubescent |
|
|
|
4. Annual with erect stems; peduncles much shorter than the leaves |
|
C. bipinnata 2. |
|
4. Perennial with creeping stems; peduncles slightly exceeding leaves |
|
C. reptans 4. |
Author:
Not yet available
|