Family: Asteraceae
Angianthus
Citation:
Wendl., Collect. Pl. 2:31 (1808).
Derivation: Greek angeion, vessel or cup; anthos, flower; referring to the cup formed by the pappus scales in A. tomentosus.
Synonymy: Not Applicable Common name: Angianthus.
Description:
Annual herbs with cobwebby non-glandular hairs; stems terete, usually slender and wiry; leaves cauline, sessile, entire, alternate or rarely opposite.
Inflorescence a terminal compound head of numerous capitula aggregated on a more or less elongated axis with short branches, globular to cylindrical; common involucre prominent or inconspicuous, 1- or 2-seriate, of leaf-like outer bracts and scarious inner bracts; capitula minute, homogamous, each subtended by 1-4 scarious hyaline bracts; capitular involucral bracts 4, hyaline, the 2 outer concave bracts enclosing the 2 inner flat ones; florets 2 per capitulum, tubular, bisexual, 3-5-merous; corolla funnel-shaped, sometimes swollen at the base, with equal lobes, yellow; anthers tailed at the base with acute apical appendages; style branches subterete, truncate.
Achenes obovoid to obconical, papillose, brown; pappus of scales forming a cup, often with bristles, reduced or absent.
Distribution:
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(P.S. Short (1983) Mudleria 5:143-214.) 15 species in Australia.
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Biology:
No text
Key to Species:
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1. Compound head subglobular, not exceeding the common involucre |
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A. preissianus 4. |
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1. Compound head ovoid to cylindrical, far exceeding the common involucre |
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2. Leaves succulent, glabrous to subglabrous |
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A. glabratus 3. |
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2. Leaves herbaceous, cobwebby to tomentose |
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3. Pappus consisting of 2 or 3 jagged scales each with 1 or 2 bristles plumose at the apex, subequal to the corolla |
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A. tomentosus 5. |
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3. Pappus consisting of a jagged ring or cup, sometimes with 1 or 2 smooth bristles much shorter than the corolla |
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4. Leaves usually oblanceolate, 1-3 cm long, 1-5 mm wide; pappus a cup 0.15-0.7 mm high |
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A. brachypappus 1. |
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4. Leaves usually linear, 0.5-1.5 cm long, c. 1 mm wide; pappus a ring 0.1-0.3 mm high |
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A. conocephalus 2. |
Author:
Not yet available
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