Botanical Survey of India | Flora of India

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Herbs, biennial or perennial, rarely scapigerous; stems usually erect, leafy, glabrous or hairy with simple and stellate hairs. Leaves variable, entire or toothed. Inflorescence corymbose or narrow panicled. Heads cylindric or broadly cylindric, erect, few to many, often with black glandular hairs; peduncle slender, erect, sometimes nodding, bracteate. Involucral bracts 2 - 3 seriate; outer ovate or ovate-lanceolate, narrow herbaceous; inner linear-lanceolate, subequal, obtuse. Ligules usually yellow, rarely orange or red; corolla 5-toothed. Stamens 5, appendaged;. anthers slender, base sagittate. Style slender, stigma bifid, branches slender, yellowish. Achenes blackish or blackish brown, oblong-cylindric, compressed, 10 - 15 ribbed, terete or angled. Pappus dirty white or brown, 1 - 2 seriate, copious, simple, rigid.

Chiefly in Europe, Asia, N. America and South Africa from tropical, temperate to alpine regions; ca 1000 species, 6 in India. (majority of them apomicts).

Literature. ROBINSON, B.L. & J.M. GREENMAN. (1904) Revision of the Mexican and Central American species of Hieracium in proc. Amer. Acad. Arts. 40: 14 - 24. ZAHN, K.H. (1923). Compositae Hieracium in A. Engler (ed.) Das Pflanzenreich IV. 280: 1100 - 1108, 1115 - 1124.



KEY TO THE SPECIES


1a. Stems uaually pubescent, sometime. glabrous, solitary or rarely branched; leaves 5-30 x 0.1-3.5 cm, radical as well as cauline 2
b. Stems glabrous or pubescent, usually branched; leaves 3-15 x 1-2 cm; usually cauline 3
2a. Radical leaves ca 30 cm long, rosulate, oblanceolate; achenes 2-3 mm long 2. Hieracium echioides
b. Radical leaves ca 15 cm long, usually very few, oblong-oblanceolate; achenes 4-5 mm long 6. Hieracium vulgatum
3a. Achenes 3-4 mm long, usually red-brown 4
b. Achenes 4-6 mm long, usually blackish 5
4a. Stems very stout, labrous; leaves usually sparse upwards 5. Hieracium virosum
b. Stems rather tall, usually glandular pubescent; leaves crowded upwards 3. Hieracium prenanthoides
5a. Leaves 2.5-15 x 0.8-2 cm, usually with ciliate margins, lanceolate or elliptic-lanccolate 1. Hieracium crocatum
b. Leaves 4-10 x 1-1.5 cm, without ciliate margins, linear oblong or oblong-lanceolate 4. Hieracium umbellatum


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