Xeranthemum L.
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publication ID |
https://doi.org/10.5281/zenodo.293764 |
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persistent identifier |
https://treatment.plazi.org/id/90236A28-9DCB-F4CA-F78D-F381101847D9 |
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treatment provided by |
Plazi |
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scientific name |
Xeranthemum L. |
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108. Xeranthemum L. View in CoL 2
Erect annuals. Leaves alternate, entire, not spiny. Capitula terminal, solitary, pedunculate. Receptacular scales narrow, acute, simple, shorter than the florets. Involucre hemispherical to ovoid; bracts scarious, the outermost short, brown, the intermediate similar but longer, imbricate, the innermost coloured, simulating ligules. Outermost florets sterile, with unequally 5-lobed corolla, the remainder hermaphrodite, with equally and very shortly 5-lobed corolla. Achenes obovoid, sericeous; pappus of 5-15 unequal, acuminate scales.
1 Outer involucral bracts obtuse or emarginate, with a whitish patch of appressed hairs on the lower surface 3. cylindraceum 1 Outer involucral bracts mucronate, glabrous, without a whitish patch
2
Innerinvolucralbractspatent(atleastinfineweather), twice as long as the intermediate bracts; capitulum usually with 70- 120 florets 1. annuum
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Innerinvolucralbractssuberect,notmorethan1 | timesas long as the intermediate bracts; capitulum with not more than 50 florets 2. inapertum
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