Carex helferi is a tussock-forming species of perennial sedge in the family Cyperaceae. It is native to parts of South East Asia.[1]
| 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 | |
Description
editThe 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.[2]
Taxonomy
editThe species was first formally described by the botanist Johann Otto Boeckeler in 1876 as a part of the work Linnaea.[3] It has two synonyms;
- Carex helferi subsp. mapaniifolia (Ridl.) T.Koyama
- Carex mapaniifolia Ridl. [2]
Distribution
editIt 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)[2] 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.[1]
See also
editReferences
edit- ^ a b "Carex helferi Boeckeler". Kew Science – Plants of the World Online. Retrieved 19 November 2022.
- ^ a b c "Carex helferi Boeckeler". World Flora Online. Retrieved 19 November 2022.
- ^ "Carex helferi Boeckeler". Tropicos. Missouri Botanical Garden. Retrieved 19 November 2022.