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60. Orthosiphon Benth. in Edward’s Bot Reg. 15: post t. 1300, (no.92). 1830. Benth. in DC., Prodr. 12: 49. 1849. Hook. f., Fl. Brit. Ind. 4: 612. 1885; Briquet in Engler & Prantl, Nat. Pflanzenfam. ed. 1, 4, 3A: 372. 1897; Mukerjee in Rec. Bot. Surv. Ind. 14,1: 21. 1940; Rech. f., Fl. Iran. 150: 576. 1982.
I.C. Hedge
Perennial herbs or subshrubs with a sparse eglandular indumentum. Leaves undivided, crenate to serrate, petiolate or sessile. Verticillasters 4-6-flowered in terminal or lateral racemes. Bracts small. Flowers white, lilac to purplish. Calyx small in flower, enlarging and deflexed in fruit, ovate to tubular; upper lip 1, large, ovate, recurved with decurrent margins; 4 lower teeth subulate - attenuate, curved, 2 long, 2 short; throat of calyx without a villous ring of hairs. Corolla bilabiate; upper lip 3-4-fid; lower entire ± cucullate; tube exserted from calyx or not, rather slender. Stamens 4, declinate; filaments without teeth or appendages; thecae unilocular by fusion. Style with a capitate-clavate slightly notched stigma. Nutlets ovoid, finely punctulate.
About 15 mainly E Asiatic species. Related to Ocimum in many characters, but corolla tube usually exserted, stigma capitate-clavate and nutlets punctulate.
Lower Taxa
Related Synonym(s):
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