Calycoseris wrightii

Calycoseris wrightii

Taxobox
name = White tackstem



image_width = 240px
regnum = Plantae
divisio = Magnoliophyta
classis = Magnoliopsida
ordo = Asterales
familia = Asteraceae
tribus = Cichorieae
genus = "Calycoseris"
species = "C. wrightii"
binomial = "Calycoseris wrightii"
binomial_authority = A. Gray

"Calycoseris wrightii", commonly known as white tackstem, is an annual spring wildflower, one of two species in the genus "Calycoseris"; the other species is "C. parryi", the Yellow tack-stem. They are part of the Asteraceae, the sunflowers, daisies, etc.

White tackstem is found in the southwestern United States and northwestern Mexico in the states of California, Nevada, Utah, New Mexico, Arizona, Baja California-north, and Sonora; it is found in one county in Texas, ( [http://plants.usda.gov/java/county?state_name=Texas&statefips=48&symbol=CAWR] ).

It is a white daisy-like flower up to more than convert|2.0|in|cm|0 across; when it grows supported amongst other plants it can be more than 18 in tall. It has one easy distinguishing feature: the closed outside of the petals contain two linear purple stripes-(fine reddish veins abaxially-2 to 3 cm (1 in)). It is a spring wildflower found in the desert regions and is plentiful after winter rains. It grows up to 4000 ft (1,220 m) elevation.

References

* [http://plants.usda.gov/java/profile?symbol=CAWR USDA: NRCS: Plants Profile "Cycloseris wrightii"]
* [http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&where-taxon=Calycoseris+wrightii Images from the CalPhotos archive]
** [http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&enlarge=0000+0000+0404+1003 Image of closed flower with stripes]
* [http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=220002210 "Cycloseris wrightii" 'Synopsis' at Flora of North America]

External links

* [http://www.wildflower.org/plants/result.php?id_plant=CAWR "Cycloseris wrightii" at LBJ Wildflower Center]
* [http://www.nps.gov/archive/deva/Graphics/Wildflowers/White-Tackstem1.jpgPhoto-High Res--(close-up of Flower-head] ; [http://www.nps.gov/deva/naturescience/white-blossoms.htm Article: Death Valley flora: "White Blossoms"]


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