Hippolytia in Flora of Pakistan @ efloras.org

15. Hippolytia Poljakov, Bot. Mater. Gerb. Bot. Inst. Komarova Akad. Nauk S.S.S.R. 18: 288. 1957; Tzvelev in Schischk. & Bobrov, Fl. USSR 26: 411. 1961; K. Bremer & Humphries in Bull. Nat. Hist. Mus. Lond. (Bot.) 23 (2): 105. 1993; K. Bremer, Asteraceae: 454. 1994.

Tanacetum L. Sect. Hippolytia (Poljakov) Podlech in Rech. f., Fl. Iran. Comp. IV. 158: 132. 1986.

Perennial, erect or ascending, pubescent to occasionally densely tomentose herbs beset with bifurcate and simple hairs. Leaves ± rosulate below and alternate above, pinnately much twice dissected. Capitula homogamous, discoid, numerous in dense corymbs or glomerules rarely fewer or solitary. Involucre vase-like, phyllaries irregularly 3-4-seriate, imbricate, broadly dark-brown margined. Receptacle flat to convex, glabrous, usually distinctly alveolate. Flowers yellow, bisexual, with 5-lobed, tubular corollas abruptly dilated above middle part. Anthers tailed below, apically subobtuse appendaged, filaments thickened above. Style branches linear, truncate. Cypselas homomorphic, almost terete-conical, 5-8-ribbed, occasionally with resin canals and ± distinct rim. Pappus absent.

A small genus of c. 19 species, distributed in Cental Asia, Mongolia, China (Xingiang, Xizang), Himalayas, Afghanistan and Pakistan. Represented in Pakistan by 3 species.

1 Plants dwarf, up to 10 (-15) cm tall. Leaves ovate, 1.2 – 2.5 x 0.6 – 1.0 cm, With incurved ultimate segments. 3 Hippolytia nana

+ Plants tall, usually more than 20 cm tall. Leaves linear-lanceolate or oblong-ovate, more than 3 cm long with straight ultimate segments. (2)

2 (1) Leaf petioles longer than the oblong-ovate laminas. Ultimate leaf segments 0.5 – 1 mm broad. Cypselas c. 2.5 mm long. 1 Hippolytia senecionis

+ Leaf petioles shorter than linear or linear-lanceolate laminas. Ultimate leaf segments c. 0.3 mm broad. Cypselas 3 – 3.5 mm long. 2 Hippolytia dolichophylla

Lower Taxa