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5. Taraxacum sect. Calanthodia (Dahlstedt) R. Doll, Gatt. Taraxacum. 59. 1974.
大头蒲公英组 da tou pu gong ying zu
Taraxacum [unranked] Calanthodia Dahlstedt, Acta Horti Gothob. 2: 144. 1926.
Plants robust. Petiole often winged; leaf blade shallowly to deeply lobed. Capitulum 3-6 cm wide. Involucre usually more than 1.5 cm wide. Outer phyllaries usually more than 10 × 4 mm, imbricate or not so, broadly ovate to lanceolate, appressed or rarely to patent, border usually distinct and pale, apex usually corniculate. Ligules yellow. Stigmas dark. Achene dark brown to straw-colored brown, large, usually 4.5-5.5 × 1.1-2 mm, ± densely spinulose above, subabruptly to abruptly narrowing into usually thick subconic to subcylindric 0.8-1.4 mm cone; beak usually 8-10 mm. Pappus white.
● Eight species: China.
The highest diversity of this section is in Sichuan. Sexuality is relatively common in this section.
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| 1 |
Outer phyllaries erect-patent to patent. |
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25 T. grypodon |
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Outer phyllaries appressed to erect |
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(2) |
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| 2 (1) |
Achene 0.9-1 mm thick |
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(3) |
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Achene 1.1-2 mm thick |
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(4) |
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| 3 (2) |
Stigmas yellow to greenish yellow, rarely in populations plants with blackish green stigmas; outer phyllaries 9-14, usually narrowly lanceolate to ovate-lanceolate. |
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23 T. peccator |
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Stigmas black; outer phyllaries 13-17, usually ovate to ovate-lanceolate. |
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24 T. forrestii |
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| 4 (2) |
Achene cone 1.2-1.4 mm |
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(5) |
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Achene cone 0.4-1.1 mm |
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(6) |
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| 5 (4) |
Leaves undivided to shallowly lobed, lateral lobes 3-5, interlobes well developed and entire. |
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22 T. platypecidum |
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Leaves deeply pinnatisect, lateral lobes 5 or 6, interlobes with a large acute tooth or lobule. |
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24 T. forrestii |
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| 6 (4) |
Outer phyllaries without a paler border or border green, very narrow, and indistinct |
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(7) |
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Outer phyllaries with a distinct paler (whitish to greenish white) border |
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(8) |
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| 7 (6) |
Outer phyllaries 17-25, lanceolate to narrowly lanceolate; achene 1.2-1.4 mm thick. |
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26 T. lanigerum |
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Outer phyllaries 11-19, broadly ovate to ovate-lanceolate; achene 1.5-2 mm thick. |
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27 T. lugubre |
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| 8 (6) |
Outer phyllaries narrowly lanceolate to linear-lanceolate, 1.2-1.5 cm; stigmas blackish purple but probably brownish gray when fresh. |
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28 T. pseudonutans |
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Outer phyllaries broadly ovate to ovate-lanceolate, 0.6-1.3 cm; stigmas black, blackish green, or deep green |
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(9) |
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| 9 (8) |
Outer phyllaries 2-4.5 mm wide; plants not robust, usually less than 10 cm tall. |
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24 T. forrestii |
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Outer phyllaries 4-8 mm wide; plants robust, 10-35 cm tall |
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(10) |
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| 10 (9) |
Pappus 8-11 mm. |
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21 T. calanthodium |
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Pappus 6-7.5 mm. |
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27 T. lugubre |
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Lower Taxa
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