It is endemic to California, where it is known from only four occurrences with a disjunct distribution.

The similarly rare subspecies valida is known from only four occurrences in the Transverse Ranges.

It is endemic to northern California where it is known from only a few occurrences in two or three counties.

It is endemic to Central Florida, where it was known most recently from 62 occurrences, but no current estimates of the total global population are available.

The plant is known from fifteen occurrences, but six of these may be degraded or destroyed.

Seeking a pattern from two occurrences is not good science.

Today the plant is known from just a few occurrences on the islands of Maui and Hawaii.

It is known from six occurrences in adjacent Oregon and one in Idaho.

As of 1997 it was known from only about 16 occurrences.

It is known from 15 or fewer occurrences in northern California and southern Oregon.