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Marrubium
Family: Lamiaceae
Marrubium image
Sue Carnahan
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JANAS 35(2)
PLANT: Biennial or perennial taprooted herbs, pubescent; stems usually erect, often much branched from crown. LEAVES: long‑petiolate to subsessile; blades ovate to orbicular; margin mostly toothed. INFLORESCENCE: verticillate, interrupted; bracts leafy. FLOWERS: subsessile; calyx zygomorphic or actinomorphic, enlarging slightly in fruit, the teeth 5 or 10, the apices spinose, straight or curled; corolla zygomorphic, 2‑lipped, the tube shorter than calyx, the upper lip flat, 2‑lobed, the lower lip 3‑lobed; stamens 4, included in corolla tube, the anther sacs divaricate with none abortive; ovary sessile, lobed to base; stigma evenly 2‑lobed. NUTLETS: oblong to ovoid, glabrous, the epidermis cells rounded or depressed. REFERENCES: Christy, Charlotte M. Lamiaceae. 2003. J. Ariz. - Nev. Acad. Sci. Volume 35(2).
Vascular plants of NE US and adjacent Canada
Cal nearly regular, 5-10-toothed, densely villous in the throat; cor strongly 2-lipped, the upper lip ascending, oblong, nearly straight, entire or shortly bifid, the lower lip spreading, 3-lobed, the central lobe the largest and often emarginate; stamens 4, included in the cor-tube, the lower pair slightly the longer; pollen-sacs divaricate, soon confluent; style gynobasic; nutlets truncate; perennials, generally woolly, with toothed or incised, rugose lvs, the fls in dense axillary clusters; bracteoles usually present. 35, Old World.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
Species within checklist: Flora of the National Park Service, Intermountain Region
Marrubium vulgare
Image of Marrubium vulgare
The National Science Foundation
Development supported by National Science Foundation Grants (DBI 9983132, BRC 0237418, DBI 0743827, DBI 0847966)
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