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- Pleuropogon_oregonus abstract "Pleuropogon oregonus is a species of grass known by the common name Oregon semaphore grass. It is endemic to Oregon in the United States, where there are only two populations. It has been called "one of the rarest grasses in North America."This rhizomatous perennial grass produces stems up to 90 to 95 centimeters tall. The erect stems are spongy in texture. The ligule may be a centimeter long. The leaves are up to 17 centimeters long. The inflorescence is a raceme bearing 6, 7, or 8 spikelets. The spikelets are up to 4 or 5 centimeters long and stick out from one side of the raceme. The spikelets are green with a purple tinge and each contains up to 14 flowers. Flowering occurs in June and July.This grass has been considered rare as long as it has been known. In the 1970s no populations were known to be extant and the grass was feared extinct. Today there is one population each in Union and Lake Counties. It is a wetland plant that grows in swampy meadows and by streams. Associated species include Beckmannia syzigachne, Deschampsia caespitosa, D. danthonioides, Glyceria borealis, Hordeum brachyantherum, Carex athrostachya, C. nebrascensis, C. saxatilis, and Eleocharis palustris.This plant is found only on private land, but part of one of the populations is on land managed by The Nature Conservancy. Threats to the species include heavy grazing, but it is thought that light grazing may be beneficial as livestock remove excessive grass buildup. Other threats include agricultural activity and changes in the local hydrology.".
- Pleuropogon_oregonus class Monocotyledon.
- Pleuropogon_oregonus division Flowering_plant.
- Pleuropogon_oregonus family Poaceae.
- Pleuropogon_oregonus family Pooideae.
- Pleuropogon_oregonus genus Pleuropogon.
- Pleuropogon_oregonus kingdom Plant.
- Pleuropogon_oregonus order Commelinids.
- Pleuropogon_oregonus order Poales.
- Pleuropogon_oregonus thumbnail Pleuropogon_oregonus.jpg?width=300.
- Pleuropogon_oregonus wikiPageExternalLink profile?symbol=PLOR3.
- Pleuropogon_oregonus wikiPageID "35271551".
- Pleuropogon_oregonus wikiPageRevisionID "518378106".
- Pleuropogon_oregonus binomial "Pleuropogon oregonus".
- Pleuropogon_oregonus binomialAuthority "Chase".
- Pleuropogon_oregonus familia Poaceae.
- Pleuropogon_oregonus genus "Pleuropogon".
- Pleuropogon_oregonus hasPhotoCollection Pleuropogon_oregonus.
- Pleuropogon_oregonus ordo Poales.
- Pleuropogon_oregonus regnum Plant.
- Pleuropogon_oregonus species "P. oregonus".
- Pleuropogon_oregonus subfamilia Pooideae.
- Pleuropogon_oregonus unrankedClassis Monocotyledon.
- Pleuropogon_oregonus unrankedDivisio Flowering_plant.
- Pleuropogon_oregonus unrankedOrdo Commelinids.
- Pleuropogon_oregonus subject Category:Flora_of_Oregon.
- Pleuropogon_oregonus subject Category:Pooideae.
- Pleuropogon_oregonus type Eukaryote.
- Pleuropogon_oregonus type Plant.
- Pleuropogon_oregonus type Species.
- Pleuropogon_oregonus type Organism.
- Pleuropogon_oregonus comment "Pleuropogon oregonus is a species of grass known by the common name Oregon semaphore grass. It is endemic to Oregon in the United States, where there are only two populations. It has been called "one of the rarest grasses in North America."This rhizomatous perennial grass produces stems up to 90 to 95 centimeters tall. The erect stems are spongy in texture. The ligule may be a centimeter long. The leaves are up to 17 centimeters long. The inflorescence is a raceme bearing 6, 7, or 8 spikelets.".
- Pleuropogon_oregonus label "Pleuropogon oregonus".
- Pleuropogon_oregonus sameAs m.0j7m4_t.
- Pleuropogon_oregonus sameAs Q7204803.
- Pleuropogon_oregonus sameAs Q7204803.
- Pleuropogon_oregonus wasDerivedFrom Pleuropogon_oregonus?oldid=518378106.
- Pleuropogon_oregonus depiction Pleuropogon_oregonus.jpg.
- Pleuropogon_oregonus isPrimaryTopicOf Pleuropogon_oregonus.
