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Published In: Labiatarum Genera et Species 601. 1834. (Labiat. Gen. Spec.) Name publication detail

Project Name Data (Last Modified On 6/2/2011)
Acceptance : Accepted
Project Data     (Last Modified On 6/3/2011)
Contributor Text: I.C. Hedge
General/Distribution: A distinct genus of c. 20 species with 2 disjunct areas of concentration: one in the C. Asian-Afghan-Pakistan region; the other in the mountains of east Africa (cf. Hedge & Lamond l.c. fig. 3). Probably allied to Ballota L.


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Shrubs or subshrubs, glabrous or pubescent with simple hairs. Leaves not divided, entire, crenate or dentate, sessile or shortly petiolate, spine-tipped or not; hard spines present in leaf axils On ours). Verticillasters distant, borne in upper leaf axils, 2-6(-8)-flowered. Calyx clearly differentiated into a tube and a spreading limb, 10-nerved, bilabiate, irregularly 5-toothed or more; in fruit coriaceous with the limb enlarging and horizontally spreading or reflexed. Corolla clearly bilabiate, yellowish-white; tube included within calyx, piloseannulate within; upper lip ± falcate or straight, vinous; lower lip spreading, 3-lobed median lobe larger than laterals. Stamens 4, didynamous; filaments glabrous or pilose; thecae 2-Jocular, glabrous. Style subequally bifid. Nutlets obovoid, apically obtuse-truncate or truncate.

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1 Leaves narrowly elliptic - lanceolate, entire; nervation indistinct (2)
+ Leaves obovate to suborbicular, crenate; nervation prominent beneath 1 Otostegia persica
2 (1) Leaves acuminate and spinulose at apex; corolla white 2 Otostegia aucheri
+ Leaves obtuse and not spinulose at apex; corolla yellow 3 Otostegia limbata
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