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Published In: Species Plantarum 2: 569. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library

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: Variously regarded as monotypic or having up to c. 10 weakly differentiated species in Europe, N. Africa, SW and C. Asia, NW Himalaya.


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Suffruticose perennials, aromatic. Stems numerous, branched or unbranched, with very short ± adpressed eglandular hairs, leafy, clearly quadrangular, rather slender. Leaves sessile, linear to oblong-linear, entire, usually with clusters of younger leaves in leaf axils, strongly gland-dotted. Cymes pedunculate in axils of upper leaves, numerous, forming mainly terminal spikes, often secund. Bracts present. Calyx tubular, widened at throat, 15-ribbed, scarcely bilabiate; with 5 subequal teeth, usually with thickened tissue at base of sinuses; tube glabrous at throat. Corolla violet blue, bilabiate; upper lip flat, emarginate, glabrous or pilose; lower lip 3-lobed with a clearly larger median emarginate lobe; tube ± curved, usually clearly exserted from calyx, pilose but not annulate within. Stamens 4, clearly exserted beyond corolla lobes, spreading, scarcely didynamous; thecae bilocular, spreading, glabrous. Stylar branches 2, subequal. Nutlets narrow oblong, weakly trigonous, apically rounded, mucilaginous on wetting.
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