Poa infirma is a species of grass known by the common names early meadow-grass[1] and weak bluegrass. It was first described from a specimen found in Colombia, but it is actually an introduced species in the Americas and is native to Europe.[2] It grows in many types of habitat, including disturbed areas. It is very similar to Poa annua, which is probably a daughter species,[2] and it is often mistaken for P. annua unless it is closely examined.[3]
This is a small, densely tufted annual grass growing up to 15 centimetres (6 in) tall. It has thin, soft-haired, yellow-green leaves. The inflorescence is a series of branches bearing flattened spikelets which have tufts of curly hairs.
^Chester, T. Plants of Southern California: Poa annua and P. infirma
Further readingedit
Takagi-Arigho, Ray (1994) Poa infirma - Flourishing? ... or Fleeing? BSBI News 65:14-18 (gives details of the plant's status and habitat in southwest England)
External linksedit
Jepson Manual Treatment
USDA Plants Profile
This Pooideae article is a stub. You can help Wikipedia by expanding it.
infirma, species, grass, known, common, names, early, meadow, grass, weak, bluegrass, first, described, from, specimen, found, colombia, actually, introduced, species, americas, native, europe, grows, many, types, habitat, including, disturbed, areas, very, si. Poa infirma is a species of grass known by the common names early meadow grass 1 and weak bluegrass It was first described from a specimen found in Colombia but it is actually an introduced species in the Americas and is native to Europe 2 It grows in many types of habitat including disturbed areas It is very similar to Poa annua which is probably a daughter species 2 and it is often mistaken for P annua unless it is closely examined 3 Poa infirma Scientific classification Kingdom Plantae Clade Tracheophytes Clade Angiosperms Clade Monocots Clade Commelinids Order Poales Family Poaceae Subfamily Pooideae Genus Poa Species P infirma Binomial name Poa infirmaKunth This is a small densely tufted annual grass growing up to 15 centimetres 6 in tall It has thin soft haired yellow green leaves The inflorescence is a series of branches bearing flattened spikelets which have tufts of curly hairs References edit BSBI List 2007 xls Botanical Society of Britain and Ireland Archived from the original xls on 2015 06 26 Retrieved 2014 10 17 a b Grass Manual Treatment Chester T Plants of Southern California Poa annua and P infirmaFurther reading editTakagi Arigho Ray 1994 Poa infirma Flourishing or Fleeing BSBI News 65 14 18 gives details of the plant s status and habitat in southwest England External links editJepson Manual Treatment USDA Plants Profile This Pooideae article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Poa infirma amp oldid 1110154587, wikipedia, wiki, book, books, library,
