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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

Small shrubs or subshrubs, often geoxylic, aromatic; leaves elliptic to ovate-spathulate, subentire; inflorescence of verticillasters, with sessile cymes 1-3-flowered in axils of bracts, often crowded towards shoot apices; bracts leaf-like; bracteoles inconspicuous; calyx weakly 2-lipped to actinomorphic, 5-lobed (3/2), lobes subequal, often spreading, broadly to narrowly triangular, often irregularly aristate, anterior lobes sometimes longer than posterior, tube 13-15-nerved, infundibular-cylindrical, throat annulate; corolla white or pink, 2-lipped, 4-5-lobed (1-2/3), posterior lip entire or often emarginate, hooded, often weakly falcate, longer than or subequal to anterior lip, tube often shorter than limb, abruptly widening above, exserted from calyx-tube and usually strongly saccate on anterior side just below throat, usually hairy within near insertion of stamens; stamens 2, posterior pair absent, filaments strongly arcuate-ascending under posterior corolla lip, often with small hairy appendage at base and obscurely toothed at apex, thecae divergent to widely divaricate, distinct, connective well-developed; disc symmetrical; style glabrous; stigma-lobes unequal, posterior shorter.  Nutlets ovoid-oblong, smooth, mucilaginous.  About six or seven species, southern Brazil, Paraguay, Uruguay and N Argentina. Open, damp areas.  Epling (1936) recognized three sections, based mainly on vegetative characters.

Distribution

Native to:

84 Brazil
85 Southern South America

Publication

Glechon Spreng., Syst. Veg. 4 (2): 222, 227 (1827); Epling, Rep. Spec. Nov. Beih. 85: 142-145 (1936), rev.; Epling & Stewart, Rep. Spec. Nov. Beih. 115: 1-49 (1939).

Image resource

Royal Botanic Gardens, Kew

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