Family: Asteraceae
Podolepis
Citation:
Labill., Nov. Holl. Pl. Sp. 2:56 (1806).
Derivation: Greek pous, genitive podos, foot; lepis, a scale; referring to the stalked involucral bracts.
Synonymy: Scalia Sims, Curtis's Bot. Mag. t. 956 (1806); Panaetia Cass., Annls Set. Nat. sér. 1, 17:417 (1829); Siemssenia Steetz in Lehm., Pl. Preiss. 1:467 (1845).
Common name: None
Description:
Annual and perennial herbs; vestiture of non-glandular hairs, usually fine and cobwebby; minute glandular hairs often present, especially on the involucre; stems terete, leafy and branched or scape-like; leaves both in a basal rosette and cauline, alternate, flat, entire.
Capitula terminal, long-pedunculate or rarely subsessile, solitary or in cymose inflorescences, usually heterogamous, discoid to radiate; involucres campanulate to hemispherical, many-seriate, never radiate; outer bracts sessile, scarious; intermediate bracts, with broad scarious laminae borne on successively longer rigid linear claws; innermost bracts with narrower scarious laminae on longer subherbaceous or indurated claws; receptacle flat, naked, pitted; outer florets uniseriate, female, fertile, tubular to shortly ligulate, rarely absent; corollas usually asymmetric, 3-5-toothed, rarely filiform; style branches filiform, truncate; disk florets bisexual, fertile, tubular, 5-merous; anthers tailed at the base, with acute terminal appendages; style branches truncate.
Achenes terete, papillose; pappus of numerous bristles, barbellate to shortly plumose, often connate at the base only, persistent, rarely absent from the outer achenes.
Distribution:
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19 species in Australia.
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Biology:
No text
Taxonomic notes:
(G. L. Davis (1957) Proc. Linn. Soc. N.S.W. 81:245-286.) Podolepis.
Key to Species:
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1. Outer florets ligulate |
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2. Capitula subsessile in dense clusters |
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P. arachnoidea 1. |
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2. Capitula pedunculate, solitary or in loose inflorescences |
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3. Peduncles naked; ligules and disk florets white |
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P. capillaris 3. |
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3. Peduncles with scale leaves; ligules and disk florets yellow |
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4. Annuals; involucres 1-2.5 cm diam., 0.5-1.5 cm long |
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5. Bract laminae ovate, wrinkled, the intermediate ones longer than or equal to their claws |
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P. canescens 2. |
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5. Bract laminae triangular, smooth, the intermediate ones shorter than their claws |
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P. longipedata 6. |
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4. Perennials; involucres 2.5-3 cm diam., 1.5-2 cm long |
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P. jaceoides 5. |
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6. Bract laminae deeply wrinkled |
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P. rugata 8. |
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7. Involucres campanulate, 4-5 mm long; florets shorter than the bracts |
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P. tepperi 9. |
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7. Involucres hemispherical, 6-7 mm long; florets longer than the bracts |
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8. Outer florets without a pappus, female |
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P. muelleri 7. |
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8. All florets with a pappus of 6-14 plumose bristles, bisexual |
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P. davisiana 4. |
Author:
Not yet available
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