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37. Klasea Cassini in F. Cuvier, Dict. Sci. Nat. 35: 173. 1825.
麻花头属 ma hua tou shu
Authors: Zhu Shi & Ludwig Martins
Nikitinia Iljin; Schumeria Iljin.
Herbs, perennial. Leaves pinnatilobed, pinnatipartite, or pinnatisect, rarely undivided, rigid or soft, margin entire or toothed. Capitula homogamous, 1 or to many in a panicle, rarely compactly corymbose, solitary at end of stem and branches. Involucre globose, ovoid, hemispheric, or bowl-shaped. Phyllaries imbricate, rigid; middle phyllaries with apex acute to acuminate and often with apical spinule; inner phyllaries longest, papillose-puberulent at apex. Florets bisexual. Corolla purple to pink, rarely almost white; tube 1/3-1/2 as long as corolla. Stigmatic branches to 1(-3) mm. Achene glabrous, with a subentire apical rim. Pappus elements of one type, in several rows, whitish to yellowish brown, all ± same length or outer ones shorter, scabrid or finely barbellate.
About 45 species: N Africa, Asia, Europe; eight species in China.
All Chinese species belong to Klasea sect. Klasea.
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| 1 |
Leaf blade adaxially scabrous with multicellular hairs but sometimes sparsely so |
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(2) |
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Leaf blade adaxially glabrous but margin sometimes pubescent |
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(4) |
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| 2 (1) |
Stems always simple, to 10 cm; margin of phyllaries black. |
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6 K. lyratifolia |
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Stems simple or branched, (10-)15-150 cm; margin of phyllaries purplish or pale-colored |
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(3) |
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| 3 (2) |
Middle phyllaries acuminate, with apical spinule 2.5-5 mm; leaf blade glandular with minute sessile glands. |
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3 K. dissecta |
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Middle phyllaries acute, with apical spinule 0.2-2 mm or without spinule; leaf blade not glandular. |
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8 K. centauroides |
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| 4 (1) |
Leaf blade glaucous, margin entire |
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(5) |
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Leaf blade green, margin dentate |
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(6) |
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| 5 (4) |
Involucre 1.5-3 cm in diam.; middle phyllaries with conspicuous black to dark brown area at apex. |
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1 K. marginata |
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Involucre 0.8-1.5 cm in diam.; middle phyllaries with inconspicuous brownish spot at apex. |
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2 K. cardunculus |
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| 6 (4) |
Stem to 15 cm, usually decumbent; involucre 1.8-2.5 cm in diam. |
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5 K. procumbens |
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Stem 15-80 cm, erect; involucre 1.1-1.7 cm in diam |
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(7) |
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| 7 (6) |
Spinule of middle phyllaries to 1 mm; leaf blade leathery with paler venation and margin white cartilaginous. |
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4 K. suffruticulosa |
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Spinule of middle phyllaries (1-)3-5 mm; leaf blade herbaceous, concolorous. |
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7 K. sogdiana |
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List of lower taxa
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