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Subfamily

VII. Subfam. Nepetoideae (Dumort.) Luerss. (1882).

VII. 2. Tribe Mentheae Dumort. (1827).

VII. 2. B. Subtribe Menthinae (Dumort.) Endl. (1838).

Description

Low, ericoid shrub with simple hairs; stems transversely ridged at nodes; leaves subsessile, stiffly ascending, linear-oblong, entire, replicate (abaxial surface hidden); inflorescence of axillary, solitary flowers; bracteoles, 2, lanceolate, near base of pedicel; calyx strongly zygomorphic, not accrescent, tubular-campanulate, downcurved, 11-13-nerved, 5-lobed (3/2), lobes usually slightly upcurved, posterior lobes deltoid-cuspidate, fused to form a lip, anterior lobes lanceolate-subulate, free above tube, throat densely villous; corolla usually blue to pink, 2-lipped, posterior lip deeply bifid, anterior lip 0.8 x to as long as tube, 3-lobed, median lobe largest, notched, tube straight; stamens 4, didynamous, included, filaments glabrous, thecae divaricate, separate at dehiscence; stigma-lobes unequal; disc symmetrical; nutlets ellipsoid, smooth, glabrous.  One species, O. caerulescens (Bentham) Doroszenko & P. D. Cantino, N Colombia.

Distribution

Native to:

83 Western South America

Publication

Obtegomeria P. D. Cantino & Doroszenko, Novon 8: 1-3 (1998).

Image resource

Royal Botanic Gardens, Kew

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