Rhynchospora sp.-Rhynchospora colorata

국표에는 Rhynchospora (골풀아재비속)이 이명 포함 26종이다.

Star grass – also known as white-top sedge, starrush whitetop, and white star sedge – is a rather unique species of sedge belonging to Cyperaceae, the sedge family. Some confusion can occur when searching for this plant, as it used to belong to the genus Dichromena (the star grasses) from its discovery in the 1700s until the 1980’s, when Dichromena was merged into the genus Rhynchospora (the beak sedges).

It’s often still referred to as Dichromena due to its difference in appearance from most other species in Rhynchospora. For simplicity’s sake, it can be considered a sub-genus within the beak sedge genus.

Members of the genus Rhynchospora can be found on every continent except

How to Plant & Grow Star Grass in Ponds (Rhynchospora colorata) - Pond Informer

 

 

Rhynchospora (beak-rush or beak-sedge) is a genus of about 400 species of sedges with a cosmopolitan distribution. The genus includes both annual and perennial species, mostly with erect 3-sided stems and 3-ranked leaves. The achenes bear a beak-like tubercule (hence the name “beak-rush”, although the plants are sedges, not rushes) and are sometimes subtended by bristles. Many of the species are similar in vegetative appearance, and mature fruits are needed to make a positive identification.

The inflorescences (spikelets) are sometimes subtended by bracts which can be leaf-like or showy.

Rhynchospora occurs on all continents except Antarctica, but is most diverse in the neotropics. It is most frequent in sunny habitats with wet, acidic soils. In marshes and savannas, Rhynchospora may be the dominant form of vegetation.

See also: List of Rhynchospora species

Contemporary taxonomic treatments include Rhynchospora and the related genus Pleurostachys in the tribe Rhynchosporae, a well-supported clade within Cyperaceae. The most comprehensive monograph of the genus  divides Rhynchospora into two subgenera and 29 sections. A recent molecular analysis  identifies two primary clades within the genus, with well-supported subgroups that agree with several of the sections identified by Kükenthal. However, this molecular analysis also suggests that Pleurostachys is embedded within one of the primary clades of Rhynchospora and that several of the recognized sections are not monophyletic.

Selected species

• Rhynchospora alba - White beak-sedge. Europe, North America
• Rhynchospora caduca - Southeast North America
• Rhynchospora californica - California beaked-rush, occurring in Marin and Sonoma County, California
• Rhynchospora capillacea - Slender beakrush. Eastern North America
• Rhynchospora capitellata - Brownish beak-sedge
• Rhynchospora colorata - White star sedge. Southeast North America.
• Rhynchospora fusca - Brown beak-sedge. Europe.
• Rhynchospora glomerata - Clustered beak-sedge. North America.
• Rhynchospora inexpansa - Southeastern North America and West Indies
• Rhynchospora knieskernii - Knieskern's beak-sedge.
• Rhynchospora longisetis
• Rhynchospora macrostachya - Tall horned beaksedge. Eastern North America.
• Rhynchospora megalocarpa - Southeastern United States
• Rhynchospora megaplumosa - Florida
• Rhynchospora nervosa - Tropical New World.
• Rhynchospora rariflora - Southeastern North America, West Indies, Central America
• Rhynchospora scirpoides - North America
• Rhynchospora waspamensis - New World.

Rhynchospora - Wikipedia

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