Family: Asteraceae
Calotis
Citation:
R. Br., Edwards' Bot. Reg. 6:t. 504 (1820).
Derivation: Greek kalos, beautiful; ous, btos, ear; referring to the ear-like pappus scales of C. cuneifolia.
Synonymy: Huenefeldia Walp., Linnaea 14:307 (1840); Goniopogon Turcz., Bull. Soc. Nat. Mosc. 24:173 (1851); Cheiroloma F. Muell., Linnaea 25:401 (1853). 23 species in Australia and 2 in Asia. (G. L. Davis (1952) Proc. Linn. Soc. N.S.W. 77:146-188).
Common name: Burr-daisies.
Description:
Annual or perennial herbs and small undershrubs, glabrous to hirsute with septate hairs: leaves cauline and/or radical, alternate, numerous, flat, usually toothed.
Capitula terminal or axillary, pedunculate, solitary or in cymose groups, radiate, heterogamous; involucres campanulate to spreading, becoming obscured by the achenes in fruit; bracts herbaceous with scarious margins, imbricate in about 3 series; receptacle convex, pitted, naked or with scale-like upgrowths; ray florets female, 1- many- sedate, ligulate; style branches linear, without sterile terminal appendages,
Ray achenes flattened, cuneate, sometimes broadly winged, glabrous to hairy, accrescent; pappus of rigid awns, often barbed, rarely plumose or absent; scales alternating with awns sometimes present; disk florets tubular, 5-merous, bisexual, usually sterile with an abortive ovary, yellow; anthers obtuse at the base, with lanceolate apical appendages; style branches lanceolate, partly connate in sterile florets, papillate; disk achenes absent or similar to the ray achenes.
Biology:
No text
Key to Species:
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1. Achene with broadly triangular ciliate wings |
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2. Ligules to 1 mm long, yellow; receptacle scaly |
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C breviradiata 2. |
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2. Ligules 3-10 mm long, white to mauve; receptacle naked |
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3. Achene woolly with tangled branched hairs |
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4. Pappus awns minutely barbellate, dark, curved |
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C. multicaulis 10. |
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4. Pappus awns plumose-barbed, usually pale, straight |
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C. plumulifera 11. |
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3. Achene never woolly, bearing simple hairs only |
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5. Plant subglabrous; leaves broad-linear to oblanceolate, entire or remotely denticulate |
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C. ancyrocarpa 1. |
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5. Plant hirsute; leaves cuneate, with 3-5 prominent acute teeth near the apex |
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C. porphyroglossa 12. |
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1. Achene wingless, glabrous or pubescent but never ciliate |
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6. Ligules inconspicuous, to 1 mm long; all florets fertile |
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C. hispidula 6. |
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6. Ligules showy, 2.5-10 mm long; disk florets sterile |
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7. Pappus awns filiform, alternating with broad obtuse scales |
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8. Leaves cuneate, with 3-6 apical lobes; pappus awns 2-4 |
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C. cuneifolia 3. |
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8. Leaves broadly oblanceolate, serrulate; pappus awn solitary or absent |
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C. kempei 7. |
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7. Pappus awns tapering from broad bases, scales absent |
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9. Plant stoloniferous; radical leaves persistent; ligules white |
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10. Radical leaves oblanceolate to elliptic, coarsely toothed; stems leafy |
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C scabiosifolia 13. |
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10. Radical leaves linear to narrowly lanceolate, entire or with a few minute teeth; stems with a few bract-like leaves . C. scapigera 14 |
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9. Plant not stoloniferous; radical leaves soon withering; ligules yellow |
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C. erinacea 5. |
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11. Plant scabrous to hirsute |
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12. Annual; pappus awns 2, equal |
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C. cymbacantha 4. |
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12. Perennials; pappus awns 6-12, unequal |
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13. Achene minutely tuberculate; 2 pappus awns erect and far exceeding the others |
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C. lappulacea 8. |
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13. Achene smooth; pappus awns variously twisted and spreading, none far exceeding the others |
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C. latiuscula 9. |
Author:
Not yet available
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