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Published In: Flora Cochinchinensis 2: 385. 1790. (Sept 1790) (Fl. Cochinch.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 5/10/2022)
Acceptance : Accepted
Project Data     (Last Modified On 7/9/2018)
Contributor Text: R.R. Mill
Contributor Institution: Royal Botanic Garden, Edinburgh, Scotland
Synonym Text:

Hornemannia Willd., Enum. Hort. Berol. 653. 1809 non Vahl 1791.


 

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Annual or perennial herbs sometimes prennating by stolons. Leaves mainly crowded in a basal rosette; cauline opposite below, ± alternate above. Inflorescence an often secund scapose terminal raceme. Bracts present. Calyx infundibular to campanulate, 5-fid, lobes ± equal. Corolla personate, tube very short; limb bilabiate. Upper lip erect, entire or shortly bifid, much smaller than lower lip; lower lip larger, spreading, 3-lobed; middle lobe of lower lip with 2 deep channels on under side and 2 ridges clothed with clavate glandular hais on upper side. Stamens 4, didynamous, inserted in corolla tube; anthers 2-celled, cells divergent. Fruit a loculicidal 2-valved capsule. Seeds very numerous, minute.

About 30 species, from Afghanisan eastwards and southwards through temperate and tropical Asia to Australasia and west central India; naturalized elsewhere. By far the greatest centre of diversity is China. Represented in Pakistan by three native species. 

In the APG III classification (2009) Mazus is included in the family Phyrmaceae.

Care should be taken in the field to make detailed notes about the following characters, which are lost or scarcely evident in most herbarium material but are very helpful to correct identification: colour of upper lip; colour of lower lip; colour of hairs on palate ridges.

 

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1.

+  

Stolons present.Calyx tube longer than lobes.

 

1. M. surculosus

 

Stolons absent. Calyx tube shorter than lobes.

 

2

2.

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Stem and leaves ± densely eglandular- and glandular-pubescent, longest eglandular hairs at least 0.4 mm and up to 0.7 mm. Fruiting pedicels usually shorter than or subequal to calyx. Bracts green, not hyaline. (Mountains of Kashmir and Khyber Pakhtunkhwa/N.W.F.P.).

 

2. M. delavayi

 

Stem and leaves subglabrous or sparingly eglandular and glandular-puberulent, longest eglandular hairs not more than 0.3 (0.4) mm. Fruiting pedicels usually longer than calyx. Bracts green but hyaline at least in part.

 

3. M. pumilus

 
 
 
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