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FOC | Family List | FOC Vol. 20-21 | Asteraceae

50. Centaurea Linnaeus, Sp. Pl. 2: 909. 1753.

矢车菊属 shi che ju shu

Authors: Zhu Shi & Ludwig Martins

Calcitrapa Vaillant; Centaurea sect. Hyalaea Candolle; Chartolepis Cassini; Cnicus Linnaeus, nom. cons.; Hyalea Jaubert & Spach; Jacea Miller.

Herbs, annual, biennial, or perennial. Leaves concolorous. Capitula heterogamous, 1 to numerous or paniculate-corymbose or paniculate-racemose. Involucre globose, ovoid, campanulate, or bowl-shaped. Phyllaries imbricate; apical appendage fimbriate, spiny, or scarious. Florets few to many; outer florets sterile, enlarged and radiant or ± as long as inner ones, without staminodes; inner florets bisexual. Corolla yellow, white, pink, or purple. Stigmatic branches short. Achene sparsely pubescent to glabrescent or glabrous, apical rim denticulate or smooth. Pappus usually present, of two types of elements; outer pappus elements bristlelike, usually in many rows, rarely in 1 row, persistent or caducous, scabrid; inner pappus elements short, usually scalelike.

About 300-450 species: most in C and SW Asia and Mediterranean region; seven species (one introduced) in China.

All of the native species in China occur in Xinjiang. Centaurea nigrescens Willdenow, native to Europe, is grown as a garden plant at the Summer Palace in Beijing.

1 Capitula concealed by uppermost leaves; uppermost leaves large.   1 C. benedicta
+ Capitula visible; uppermost leaves diminished   (2)
2 (1) Appendage of middle phyllaries unarmed, hyaline, margin entire or slightly lacerate   (3)
+ Appendage of middle phyllaries fimbriate or spiny   (4)
3 (2) Involucre 12-18 mm in diam.; stem leaves decurrent.   2 C. glastifolia
+ Involucre 4-6 mm in diam.; stem leaves sessile.   3 C. pulchella
4 (2) Appendage of middle phyllaries fimbriate, blackish.   4 C. scabiosa
+ Appendage of middle phyllaries spiny, pale   (5)
5 (4) Terminal spine of middle phyllaries straight, (3-)10-25 mm.   7 C. iberica
+ Terminal spine of middle phyllaries arcuate, 1-4 mm   (6)
6 (5) Bisexual florets 3-7; pappus present.   5 C. virgata
+ Bisexual florets ca. 12; pappus absent.   6 C. diffusa

Lower Taxa


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