Calochortus umpquaensis

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Calochortus umpquaensis

Vulnerable  (NatureServe)[1]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Liliales
Family: Liliaceae
Genus: Calochortus
Species:
C. umpquaensis
Binomial name
Calochortus umpquaensis

Calochortus umpquaensis is a species of flowering plant in the

Little River in Douglas County, in particular the Watson and Ace Williams Mountains.[2] The flower has also been found at a single location in each of Josephine and Jackson Counties.[1]

This plant was described to science in 1989 when an isolated population of what had been reported to be Calochortus howellii was shown to belong to a separate species.[3] The stem is 20 to 30 centimeters tall and the inflorescence contains one or more flowers. The bell-shaped flower has three hairy white or cream-colored petals, each with a bearded purple-black blotch at the base, measuring up to 3.5 centimeters in length. The fruit is a capsule up to 5.4 centimeters long.[2]

This wildflower is always found on

Roemer's fescue (Festuca roemeri).[5]

Though rare in general, the plant can be locally abundant, with the population at Ace Williams Mountain containing 400,000 to 800,000 individuals.[1]

Threats to this species include nickel mining, introduced species of plants, and poaching. Logging and grazing of cattle are threats, but these have been mitigated recently on federal lands.[1]

References

  1. ^ a b c d Calochortus umpquaensis. The Nature Conservancy. Retrieved 10-13-2011.
  2. ^ a b Calochortus umpquaensis. Flora of North America. Retrieved 10-13-2011.
  3. ^ Fredricks, N. A. (1989). Morphological comparison of Calochortus howellii and a new species from southwestern Oregon, C. umpquaensis (Liliaceae). Systematic Botany 14(1) 7-15. Retrieved 10-13-2011.
  4. ^ Calochortus umpquaensis. Center for Plant Conservation. Retrieved 10-13-2011.
  5. ^ Holmes, R. Calochortus umpquaensis. USFS Celebrating Wildflowers Plant of the Week. Retrieved 10-13-2011.