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Cyperaceae taxon details

Mesomelaena preissii Nees

1678578  (urn:lsid:marinespecies.org:taxname:1678578)

accepted
Species
marine, brackish, fresh, terrestrial
recent only
Nees von Esenbeck, C. G. D. (1846). Cyperaceae. Pp. 72-94 in Lehmann, J.G.C.(ed.), Plantae Preissianae vol. 2. , available online at https://www.biodiversitylibrary.org/page/498822
page(s): 88 [details] 
Lectotype  LD, geounit Western Australia  
Lectotype LD, geounit Western Australia [details]
Description Culms erect, terete, without nodes, grey-green, 20-60 cm high, c. 1 mm diam.
Leaf-sheaths pink-brown turning grey-brown...  
Description Culms erect, terete, without nodes, grey-green, 20-60 cm high, c. 1 mm diam.
Leaf-sheaths pink-brown turning grey-brown with age, usually not shining, breaking
up with age to form a network of fibres round the base of the culms; ligule obvious,
white-membranous, to 1.5 cm long; leaf-blades reduced, to 3.5 cm long. Inflorescence
globose or hemispherical, 9-14 mm diam. Involucral bracts: 1 longer than the
inflorescence, 3-8 cm long, with a second bract opposed with a short awn; both
bracts with broad hyaline margins. Spikelets 8-10 mm long; glumes 6-7, with an
ex curved awn. Anthers 2.5-4.0 mm long, with an appendage 1.0-1.7 mm long.
Nut 2.0-2.5 mm long, 1.2-1.5 mm diam., whitish, short-ovate; gynophore yellowish
with a spreading or reduced disc. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Pl. Preiss. 2: 88 1846 to Pl. Preiss. 2: 88 (1846), information...  
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Pl. Preiss. 2: 88 1846 to Pl. Preiss. 2: 88 (1846), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Mesomelaena preissii Nees. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1678578 on 2025-04-19
Date
action
by
2023-09-06 07:35:01Z
created
2024-12-10 11:47:54Z
unchecked
db_admin
2025-04-04 06:48:59Z
checked
2025-04-12 12:03:24Z
changed

Creative Commons License The webpage text is licensed under a Creative Commons Attribution 4.0 License


Nomenclature

original description Nees von Esenbeck, C. G. D. (1846). Cyperaceae. Pp. 72-94 in Lehmann, J.G.C.(ed.), Plantae Preissianae vol. 2. , available online at https://www.biodiversitylibrary.org/page/498822
page(s): 88 [details] 

basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details] 

 
 Present  Inaccurate  Introduced: alien  Containing type locality 
   

Lectotype LD, geounit Western Australia [details]
From editor or global species database
Description Culms erect, terete, without nodes, grey-green, 20-60 cm high, c. 1 mm diam.
Leaf-sheaths pink-brown turning grey-brown with age, usually not shining, breaking
up with age to form a network of fibres round the base of the culms; ligule obvious,
white-membranous, to 1.5 cm long; leaf-blades reduced, to 3.5 cm long. Inflorescence
globose or hemispherical, 9-14 mm diam. Involucral bracts: 1 longer than the
inflorescence, 3-8 cm long, with a second bract opposed with a short awn; both
bracts with broad hyaline margins. Spikelets 8-10 mm long; glumes 6-7, with an
ex curved awn. Anthers 2.5-4.0 mm long, with an appendage 1.0-1.7 mm long.
Nut 2.0-2.5 mm long, 1.2-1.5 mm diam., whitish, short-ovate; gynophore yellowish
with a spreading or reduced disc. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Pl. Preiss. 2: 88 1846 to Pl. Preiss. 2: 88 (1846), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
    Definitions

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