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

13. Inula britannica Linnaeus, Sp. Pl. 2: 882. 1753.

欧亚旋覆花 ou ya xuan fu hua

Herbs, perennial, 10-40(-75) cm tall. Stems erect, villous. Leaves sessile; basal blades lanceolate, (3-)6-7 cm × 8-20(-30) mm; cauline blades lanceolate-elliptic to lanceolate-linear, 2-5+ cm × 5-12(-20) mm, abaxially usually densely villous and glandular, adaxially sparsely strigillose to glabrate, bases cordate or auriculate, clasping, margins entire or serrulate. Capitula 1-8, 2.5-5 cm in diam.; peduncles 1-4 cm, densely villous. Involucre (7-)15-22 mm in diam.; phyllaries in 4 or 5 series, outer ones lanceolate-linear, 4-6 × 0.5-0.8 mm, bases sericeous, inner similar, more scarious. Ray florets 40-70+; lamina 10-15(-20) mm. Disk floret corollas 4-6 mm, 5-lobed. Achenes cylindric, 1-1.2 mm, puberulent. Pappus white, of 20-25 distinct or basally connate bristles 4-6 mm. Fl. Jun-Sep. 2n = 16, 32.

Roadsides, wastelands, fields, sandy places; 300-1700 m. Hebei, Heilongjiang, Nei Mongol, Xinjiang [Russia, Tajikistan, Turkmenistan, Uzbekistan; Europe].


1 Stems, peduncles, abaxial surface of leaves, and involucre densely lanate-villous.   13d var. sublanata
+ Stems, peduncles, abaxial surface of leaves, and involucre glabrous, or sometimes shortly pubescent   (2)
       
2 (1) Capitula sparsely arranged.   13a var. britannica
+ Capitula densely arranged   (3)
       
3 (2) Leaves narrowly linear, 3-10 × 0.3-1 cm.   13b var. angustifolia
+ Leaves broader than 1 cm.   13c var. ramosissima

Lower Taxa


 

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