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Pakistan | Family List | Labiatae

34. Perovskia Karel. in Bull. Soc. Nat. Mosc. 14: 15. 1841. Benth. in DC., Prodr. 12: 260. 1848; Stocks in Hook., Journ. Bot. 4: 176. 1852; Hook. f., Fl. Brit. Tnd. 4: 625. 1885; Briquet in Engler & Prantl, Nat. Pflanzenfam. ed. 1, 4, 3A: 288. 1896; Kudrjaschev, The genus Perovskia Karel. Taschkent 1936 [in Russian]; Mukerjee in Rec. Bot. Surv. Ind. 14, 1: 102. 1940; Gorschkova in Komarov, Fl. URSS 21: 374. 1954; Hedge & Lamond in Notes Roy. Bot. Gard. Edinb. 28: 126. 1968; Bokhari & Hedge, Observations on the tribe Meriandreae, in Notes Roy. Bot. Gard. Edinb. 31: 53. 1971; Rech. f., Fl. Iran. 150: 476.

I.C. Hedge

Subshrubs, aromatic, erect, much branched. Stems and leaves with a prominent indumentum of small adpressed dendroid-stellate hairs and numerous sessile oil globules. Leaves simple or pinnatisect, margins entire to serrate. Inflorescence widely branched, paniculate, showy. Verticillasters many, 2-6-flowered, distant. Flowers with a short pedicel or sessile. Calyx inconspicuously bilabiate; upper lip indistinctly tridentate; lower lip subequal to upper, bidentate; in fruit increasing slightly in length and width. Corolla violet-blue (in ours), rarely white, c. 2 x length of calyx; tube somewhat ampliate, pilose-annulate; upper lip subequally 4-lobed, ± erect; lower lip entire 1-lobed, somewhat reflexed. Stamens 2, the anterior pair, dearly exserted or included, within the same species; thecae both fertile, parallel, separated by a short connective; staminodes 2, small, posterior. Style included or clearly exserted; stylar arms divergent, thickened, flat. Nutlets 4, ovoid, smooth.

About 7 species are recognized, but a new assessment is much needed. A typical genus of Central Asia - Afghanistan and Pakistan, extending to E. Iran. It is very isolated in the family; the shrubby habit, the corolla structure of a 4-lobed upper lip and a 1-lobed lower lip combined with the 2 stamens and the bilocular thecae separated by a short connective, set it far apart from other Labiate genera (cf. Bokhari & Hedge, l.c.). In corolla structure, and the apparently decimate stamens, Perovskia is reminiscent of some of the Ocimoid genera.

1 Leaves bipinnatisect   1 Perovskia abrotanoides
+ Leaves simple, margins crenate, serrate or subentire   2 Perovskia atriplicifolia

Lower Taxa

Related Synonym(s):


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