Species of plant
| Carex helferi | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Clade: | Commelinids |
| Order: | Poales |
| Family: | Cyperaceae |
| Genus: | Carex |
| Species: | C. helferi |
| Binomial name | |
| Carex helferi Boeckeler | |
Carex helferi is a tussock-forming species of perennial sedge in the family Cyperaceae. It is native to parts of South East Asia.
Description
The sedge has a woody rhizome with central culms that have a triangular cross-section with a length of 20 to 50 cm (7.9 to 19.7 in) and a width of 1 to 3 mm (0.039 to 0.118 in) and that are smooth lower down with a rough texture toward the top. It has basal flattish to folded lengthwise leaves with a broadly linear to lanceolate shaped blade that is 17 to 60 cm (6.7 to 23.6 in) long with a 1 to 7 cm (0.39 to 2.76 in) long dark brown sheaths that usually disintegrate. The narrow inflorescences appear as a narrow branched cluster with a length of 17 to 20 cm (6.7 to 7.9 in) with three to six crowded to distant nodes.
Taxonomy
The species was first formally described by the botanist Johann Otto Boeckeler in 1876 as a part of the work Linnaea. It has two synonyms;
- Carex helferi subsp. mapaniifolia (Ridl.) T.Koyama
- Carex mapaniifolia Ridl.
Distribution
It is often situated along river banks in the understorey of evergreen forests from an altitude of 0 to 400 m (0 to 1,312 ft) in tropical biomes, the range of the plant extends from Myanmar in the north to Thailand in the south and on the island of Java in Indonesia.
See also
References
- ^ "Carex helferi Boeckeler". Kew Science – Plants of the World Online. Retrieved 19 November 2022.
- ^ "Carex helferi Boeckeler". World Flora Online. Retrieved 19 November 2022.
- "Carex helferi Boeckeler". Tropicos. Missouri Botanical Garden. Retrieved 19 November 2022.
| Taxon identifiers | |
|---|---|
| Carex helferi | |