Hulsea mexicana

Hulsea mexicana, the Mexican alpinegold or Mexican hulsea is a rare North American species of flowering plant in the daisy family

Hulsea mexicana
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Asterales
Family:
Asteraceae
Genus:
Hulsea
Species:
H. mexicana
Binomial name
Hulsea mexicana
Rydb. 1914

It has been found only in a small region straddling the border between Mexico and the United States. It grows in northern Baja California and in southern California (Imperial County and San Diego County). It grows in chaparral, yellow pine forests, and open habitats between 3,000–9,000 feet (910–2,740 m) in elevation.[1][2] The first botanical specimens collected were from the Mexican side of the border.[3]

Description

Hulsea mexicana is an annuals or biennial herb sometimes reaching 100 cm (39 in) in height. Most of the leaves are on the stem rather than clustered around the base. One plant will generally produce 3–5 flower heads, each with 20–35 ray flowers surrounding a large number of tiny disc flowers.[4]

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References
  1. Calflora taxon report, University of California: Hulsea mexicana Mexican alpinegold, Mexican hulsea . accessed 2.2.2013
  2. Biota of North America Program 2014 county distribution map
  3. Rydberg, Per Axel. 1914. North American Flora 34(1): 41
  4. Flora of North America, Hulsea mexicana Rydberg 1914. Mexican alpinegold


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