''Helenium chihuahuense'' is a North American
perennial plant
A perennial plant or simply perennial is a plant that lives more than two years. The term ('' per-'' + '' -ennial'', "through the years") is often used to differentiate a plant from shorter-lived annuals and biennials. The term is also wide ...
in the
sunflower family. It has been found only in the state of
Chihuahua in northwestern Mexico.
[Turner, B. L. 2013. The comps of Mexico. A systematic account of the family Asteraceae (chapter 11: tribe Helenieae). Phytologia Memoirs 16: 1–100]
''Helenium chihuahuense'' is a branching annual herb up to 78 cm (31.2 inches) tall with thick rootstocks producing only one stem with a single flower head. The leaves are long, narrow and irregularly lobed. The head is spherical or egg-shaped, with many disc flowers, each yellow with purple tips. These are surrounded by about 14-15 yellow ray flowers
The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae we ...
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References
External links
Photo of herbarium specimen at Missouri Botanical Garden, collected in Chihuahua in 1936, isotype of ''Helenium chihuahuense''
Flora of Chihuahua (state)
Plants described in 1972
chihuahuense
{{Asteroideae-stub