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Published In: Species Plantarum 2: 582. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

 

Project Name Data (Last Modified On 6/2/2011)
Acceptance : Accepted
Project Data     (Last Modified On 6/3/2011)
Contributor Text: I.C. Hedge
General/Distribution: A mainly European and SW Asiatic genus of about 30 species. With some affinities to Ballata L. - not recorded from our area - which has a short-toothed calyx limb.

 

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Perennial herbs with a pilose to vinous to lanate indumentum of simple or irregularly-rayed stellate hairs. Leaves undivided, petiolate, crenate-serrate. Verticillasters dense, many-flowered, distant, borne in axils of upper leaves. Bracts subulate, spinulose somewhat shorter than calyces. Flowers white or cream, sessile. Calyx not bilabiate, tubular, with 10 often ribbed veins, straight, scarcely expanding in fruit; teeth 5 to 10, equal or unequal in length, spreading in fruit with recurved to hooked tips; throat open in fruit, white-bearded or glabrous. Corolla small, bilabiate; tube straight, shortly exserted or included, glabrous within or annulate; upper lip straight, clearly bind or entire. Stamens 4, included in corolla, didynamous; thecae bilocular, divergent. Style with 2 unequal short lobes. Nutlets smooth, trigonous, apically obtuse.
 

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1 Verticillasters in upper leaf axils; calyx teeth (5-) 10; indumentum of branched hairs (2)
+ Verticillasters congested forming a terminal spike-like inflorescence, densely white lanate; calyx teeth 5; indumentum of simple hairs 1 Marrubium marrubiastrum
2 (1) Calyx teeth equal or subequal, apically ± booked or circinate 3 Marrubium vulgare
+ Calyx teeth alternating long and short, apically curved in fruit 2 Marrubium anisodon
 
 
 
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