Frank T. Callahan

Calochortus coxii is a rare species of flowering plant in the lily family known by the common names Cox's mariposa lily and crinite mariposa lily. It is endemic to Oregon in the United States, where it is known only from Douglas County. This rare plant was first described in 1988. It is a perennial herb growing 15 to 25 centimeters tall. The narrow leaves are up to 30 centimeters long and have hairy upper surfaces and hairless, shiny undersides. The inflorescence contains 1 to 7 showy bell-shaped flowers with petals up to 2.5 centimeters long. They are white with red striping and a large

Calochortus syntrophus is a rare species of flowering plant in the lily family known by the common names Callahan's mariposa lily and clustered mariposa lily. It is endemic to northern California, where it occurs in a remote area north of Montgomery Creek in Shasta County. It has also been spotted in adjacent Tehama County. Its habitat includes open, rocky areas with moist or wet soils in oak woodland territory. It was first discovered in 1993 and its description was published the following year. This plant produces a thick, waxy stem 40 to 60 centimeters in maximum height. It grows from a

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