Subfamily

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

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

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

Description

Perennial herb with basal rosettes of leaves, rhizomatous; leaves simple, crenate, long-petiolate; inflorescence of 2-6-flowered verticillasters forming a lax, secund, spiciform thyrse, scapose, or sometimes a few pairs of leaves present on flowering stem; bracts not conspicuous, ovate, acute, as long as or shorter than calyx; bracteoles absent; calyx 2-lipped (3/2), campanulate, 13-nerved, posterior lobes deltoid, upcurved, anterior lobes long-deltoid, straight, throat glabrous; corolla 2-lipped, 4-lobed (1/3), violet, posterior lip semi-orbicular, emarginate, anterior lip with lobes ± rounded, truncate, reflexed, tube ± cylindrical, hairy in throat; stamens 4, didynamous, posterior pair shorter, inserted in middle of tube, exserted, anthers cohering in pairs, thecae confluent; stigma-lobes shortly subulate; nutlets ovoid, ± papillate. 2n =12.  One species: H. pyrenaicum L., calcicole in mountains of Europe, Alps, Pyrenees, Cantabrian mountains.

Distribution

Native to:

Synonyms

Pasina Adans., Fam. Pl. 2: 189 (1763).

Publication

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Species found in RBG Kew living collections

1955-3607 Horminum pyrenaicum L.  EDIN  F 154 0609 
1975-5268 Horminum pyrenaicum L. N HMSX 1155 F 154 0610 
1964-17102 Horminum pyrenaicum L.  GEVA   154 0701 

Image resource

© Royal Botanic Gardens, Kew