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5. Lavandula L., Sp. Pl. 572. 1753. Gen. Pl. ed. 5: 249. 1754; Benth. in DC., Prodr. 12: 143. 1848; Hook. f., Fl. Brit. Ind. 4: 630. 1885; Briquet in Engler & Prantl, Nat. Pflanzenfam. ed. 1, 4, 3A: 228.1896; Mukerjee in Rec. Bot. Surv. Ind. 14: 64. 1940; Wealth of India, Raw Materials 6: 44. 1962; Rech. f., Fl. Iran. 150: 84. 1982.
I.C. Hedge
Strongly aromatic shrubs with an all-over indumentum of small adpressed stellate hairs. Stems quadrangular, stiffly erect. Leaves not divided (in ours), entire-margined, with or without younger leaves clustered in axils. Inflorescence spicate, simple or branched, borne on a long leafless peduncle. Bracts subtending 6-8 flowers in each verticillaster. Bracteoles present or absent. Flowers ± sessile. Calyx tubular, ± adpressed to axis, 13-15-ribbed, not bilabiate; tube not bearded within; teeth short subequal. Corolla exserted, blue-violet, bilabiate; upper lip bifid; lower lip 3-lobed. Stamens 4 included in corolla tube, dedinate; thecae bilocular becoming confluent and unilocular, bearded. Style oblong or subglobose. Nutlets oblong, smooth, glabrous.
About 20 mainly European species: also in N. Africa, Macaronesia, Arabia and India. No native species are in our area, but lavender is grown both as an ornamental and, occasionally, as a commercial plant.
Lower Taxon
Related Synonym(s):
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