Calochortus pulchellus is a rare species of flowering plant in the lily family known by the common name Mt. Diablo fairy-lantern or Mount Diablo globelily.[3][4]

Calochortus pulchellus
Conservation status
Imperiled  (NatureServe)[1]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Order:	Liliales
Family:	Liliaceae
Genus:	Calochortus
Species:	C. pulchellus
Binomial name
Calochortus pulchellus (Benth.) Alph. Wood 1868, not Dougl. ex Benth. 1835 (latter name not validly published)[2]
Synonyms[3]
Cyclobothra pulchella Benth. Calochortus pulchellus Dougl. ex Benth. 1835, not validly published

Calochortus pulchellus is endemic to California, where it is mainly restricted to Mount Diablo of the Diablo Range, in Contra Costa County of the eastern San Francisco Bay Area.[5] There are historical occurrences in the North California Coast Ranges, within Marin, Solano, Napa, and Humboldt Counties.[4]

It grows in chaparral and woodland habitats, currently only known on the bayside−western slopes of Mount Diablo.[5]

Description

Calochortus pulchellus is a perennial herb growing a branching stem up to about 30 centimeters tall. The basal leaf is up to 40 centimeters long and does not wither at flowering; there are 2 or 3 smaller leaves farther up the stem.[5]

The inflorescence is a solitary flower or a cluster of several flowers, which are nodding and usually spherical with all their petal tips touching. The three sepals and three petals are 2 or 3 centimeters long and pale to deep yellow. The petals are thinly hairy inside and often fringed with yellow hairs.[5]

The fruit is a winged capsule 2-3 centimeters in length.[5]

formerly included[3]

• Calochortus pulchellus var. amabilis, now called Calochortus amabilis
• Calochortus pulchellus var. maculosus, now called Calochortus amabilis
• Calochortus pulchellus var. parviflorus, now called Calochortus monophyllus

References

External links

• Calflora Database: Calochortus pulchellus (Mount Diablo globelily, Mt. Diablo fairy lantern)
• Jepson Manual (TJM93) Treatment of Calochortus pulchellus
• United States Department of Agriculture Plants Profile for Calochortus pulchellus (Mt. Diablo fairy-lantern)
• Flora of North America, Calochortus pulchellus
• Contra Costa County Report: Mt. Diablo fairy-lantern
• U.C. Calphotos gallery of Calochortus pulchellus

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