Calochortus monanthus

Calochortus monanthus is a presumed extinct North American species of flowering plant in the lily family known by the common names single-flowered mariposa lily and Shasta River mariposa lily. It was endemic to northern California.[1][2][3][4]

Calochortus monanthus
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Liliales
Family: Liliaceae
Genus: Calochortus
Species:
C. monanthus
Binomial name
Calochortus monanthus
Ownbey

It is presumed extinct, having been collected and documented once over a century ago and never found again. The single known specimen was collected by botanist Edward Lee Greene from a meadow on the banks of the Shasta River, near Yreka in Siskiyou County, California, in June 1876.[2]

Description

Calochortus monanthus had an unbranching stem and an inflorescence of a single erect, bell-shaped flower on a long peduncle. The flower had three sepals about 4 centimeters long and three toothed petals each between 4 and 5 centimeters. The petals were pinkish with a dark red spot at each base.[5]

References
  1. Calflora taxon report, University of California, Calochortus monanthus Ownbey single flowered mariposa lily
  2. Ownbey, Francis Marion 1940. Annals of the Missouri Botanical Garden 27(4): page 465
  3. Ownbey, Francis Marion 1940. Annals of the Missouri Botanical Garden 27(4): plate 39 full-page line-drawing of Calochortus monanthus
  4. Tropicos, Calochortus monanthus Ownbey
  5. Flora of North America, Calochortus monanthus'


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