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

84. Hieracium Linnaeus, Sp. Pl. 2: 799. 1753.

山柳菊属 shan liu ju shu

Authors: Zhu Shi & Günter Gottschlich

Herbs, perennial. Stem solitary to few fascicled, branched or unbranched. Leaves petiolate or sessile, margin entire, deeply toothed, or rarely lobed. Basal leaves rosulate, withered at anthesis, or absent. Stem leaves few to numerous [or 1 or reduced and bractlike or absent]. Synflorescence corymbiform, paniculiform, racemiform, or pseudocymiform, sometimes capitulum solitary. Capitula with numerous florets. Involucre campanulate, or basally turbinate, (0.8-)0.9-1.2[-2] cm. Phyllaries in several irregularly or regularly imbricate rows, linear-lanceolate. Florets yellow [or rarely white]. Achene cylindric, ellipsoid, or narrowly obconic, 2.5-5 mm, with 8-10[-14] equal ribs apically confluent in an obscure ring, apex truncate. Pappus white, dirty white, dirty yellow, or pale yellowish brown, of scabrid bristles.

About 800 species (broad species concept) with over 5,000 apomictic taxa (described as microspecies or subspecies): N Africa, Asia, Europe, North and South America; six species (one endemic) in China.

Hieracium hololeion has been shown by molecular phylogenetic analyses (see N. Kilian et al. in V. A. Funk et al., Syst. Evol. Biogeogr. Compositae, 352-353. 2009) to be a member of subtribe Crepidinae (see there under Hololeion). Also Hieracium coreanum, as was first stated by H. S. Pak (Fl. Coreana 7: 378. 1999) and Sennikov and I. D. Illarionova (Bot. Zhurn. 86(3): 37-59. 2001), is actually a member of subtribe Crepidinae, belonging to Crepis.

1 Basal and lower stem leaves absent at anthesis   (2)
+ Basal leaves withered at anthesis or present in fruit   (4)
2 (1) Middle stem leaves lanceolate to narrowly linear, 0.5-2 cm wide, base cuneate.   1 H. umbellatum
+ Middle stem leaves mainly ovate, 1.5-5 cm wide, base rounded or cordate and amplexicaul   (3)
3 (2) Base of stem leaves cordate and amplexicaul; leaves often with rigid simple hairs on margin.   2 H. virosum
+ Base of stem leaves rounded; leaves glabrous or with few rigid simple hairs on margin.   3 H. robustum
4 (1) Basal leaves withered at anthesis; phyllaries abaxially with capitate stipitate glandular hairs.   6 H. regelianum
+ Basal leaves present in fruit; phyllaries abaxially without or with capitate stipitate glandular hairs   (5)
5 (4) Phyllaries abaxially with sparse stellate hairs to 0.3 mm and with moderate simple hairs.   4 H. korshinskyi
+ Phyllaries abaxially with dense capitate stipitate glandular hairs to 1 mm but simple hairs lacking.   5 H. morii

Lower Taxa


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