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Subfamily

N.B. the name of the author should have an accent, however this has been removed as it corrupts the program used to create the factsheets. 

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

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

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

Description

Shrubs, strongly aromatic, frequently gynodioecious; leaves petiolate, crenate, dentate to subentire; inflorescence in compound, terminal or axillary, dichasial, pedunculate, few to many-flowered, often corymbiform cymes, lax or congested, in axils of leaf-like bracts, often forming spherical glomerules, often with solitary, terminal flower at lowest cyme-branch; bracts leaf-like; bracteoles inconspicuous, lowest sometimes leaf-like; calyx cylindrical-campanulate, ± actinomorphic, equally 5-lobed, lobes triangular-subulate, sometimes plumose, tube 10-nerved, often long-pilose, throat hairy; corolla white, pink or lilac, weakly 2-lipped, 5-lobed (2/3), posterior lip emarginate to 2-fid, anterior lip with median lobe broader, tube included in calyx; stamens 4, shorter than corolla, didynamous, anterior pair longer, spreading, filaments glabrous, thecae parallel or divergent, distinct, connective slightly dilated; stigma-lobes unequal to subequal, long-subulate, anterior lobe broader; disc symmetrical, reddish-orange; nutlets oblong-ovoid, smooth or finely tuberculate. 2n = 42, 48.  Seven species, endemic to Canary Is. and Madeira.  Mountain slopes and clearings.  Hybrids have been reported.  La Serna (1984) recognized two sections:  Sect. Bystropogon, flowers in dichasial cymes, calyces with lobes narrow, subulate, plumose, nutlets smooth, 4 spp. Canary Is.  Sect. Canariense La-Serna, flowers in congested glomerules, calyces with lobes short, triangular-acuminate, not plumose, nutlets somewhat tuberculate, 3 spp. Madeira and Canary Is.

Distribution

Native to:

21 Macaronesia

Publication

Bystropogon L'Hér., Sert. Angl. 19, t. 22, 23 (1788), nom. cons.; La-Serna, Revisión del género Bystropogon. J.Cramer, Vaduz (1984), rev.

Species found in RBG Kew living collections

1988-8616 Bystropogon organifolius L'Her. N BURP 9 F TRO_N SEED

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© Royal Botanic Gardens, Kew