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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 shrubs, strongly aromatic, with simple hairs; leaves sessile to subsessile, linear to spathulate, entire, revolute; inflorescence of paired, short-pedunculate, axillary cymes (forming verticillasters), sometimes reduced to solitary flowers; calyx strongly zygomorphic, not accrescent, tubular-campanulate, 13-nerved, 2-lipped, 5-lobed (3/2), posterior lip shallowly lobed, upcurved, lobes deltoid, anterior lip deeply lobed (or the lobes distinct above the tube, thus not forming an anterior lip), lobes straight to slightly upcurved, lanceolate to lanceolate-subulate, throat densely hairy; corolla white to deep purple, 2-lipped, posterior lip entire or emarginate, anterior lip 3-lobed, median lobe emarginate and sometimes erose, tube upturned in middle (usually sharply so), throat partially blocked by prominent hump on anterior surface; stamens 4, didynamous, included to slightly exserted, filaments glabrous, thecae parallel, separate at dehiscence, variously pubescent near base and apex, connective rather broad; stigma-lobes usually equal to subequal; disc symmetrical; nutlets broadly ovoid to obovoid, smooth or minutely reticulate, glabrous.  2n = 24.  Six species of sandy soils in the southeastern U.S., most of them rare or narrowly endemic.

Distribution

Native to:

78 Southeastern U.S.A.

Publication

Conradina A. Gray, Proc. Amer. Acad. Arts 8: 294 (1870); Gray, A Monograph of the Genus Conradina, Ph.D. Thesis, Vanderbilt University (1965), rev.

Image resource

Royal Botanic Gardens, Kew

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