Bolboschoenus yagara
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| Bolboschoenus yagara | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Clade: | Commelinids |
| Order: | Poales |
| Family: | Cyperaceae |
| Genus: | Bolboschoenus |
| Species: | B. yagara |
| Binomial name | |
| Bolboschoenus yagara (Ohwi) Y.C.Yang & M.Zhan | |
| Synonyms | |
|
Scirpus yagara Ohwi | |
Bolboschoenus yagara is a species of flowering plant in the sedge family Cyperaceae. It is a perennial clonal herb, 0.8 to 1.3 meters (2 ft 7 in to 4 ft 3 in) tall, and develops underground rhizomes that terminate in spherical or ellipsoid tubers that are up to 3–4 centimeters (1.2–1.6 in) in diameter.[1] It is able to propagate asexually through the tubers, as well as sexually by seeds.[2]
Bolboschoenus yagara is predominantly found in China and East Asia, with a fossilized specimen dated from the Late Pliocene period discovered in Shanxi, China.[3] Populations that were previously believed to be Bolboschoenus maritimus have been identified in Central Europe since 1996, with additional populations reported in Poland in 2006. The classification of Bolboschoenus yagara as a distinct species from Bolboschoenus maritimus was based on the morphology of the inflorescence, glumes, spikelets, and achenes. Bolboschoenus yagara has compound, or, rarely, head-like inflorescence with three to eight branches with two or three spikelets each. It has trifid styles, rufescent glumes, strong perianth branches that remain attached to mature achenes, and the achenes are nearly equilaterally trigonous. Bolboschoenus maritimus's inflorescences are head-like and have one to two branches. While its glumes are similar in color to Bolboschoenus yagara, almost all individuals of Bolboschoenus maritimus have bifid styles and digynous achenes.
It is possible that species that could not be clearly identified as either Bolboschoenus yagara or Bolboschoenus maritimus was in fact a B. yagara x B. maritimus hybrid.[4]