Nemacladus twisselmannii
PlantsFamily: Campanulaceae · Genus: Nemacladus

Fletcher Linton, USFS botanist per [1] · public_domain
About
Nemacladus twisselmannii is a rare species of flowering plant in the bellflower family known by the common names Twisselmann's threadplant and Twisselmann's nemacladus. It is endemic to California, where it is known only from two locations in the Sierra Nevada. There is one occurrence each in Kern and Tulare Counties.
Summary from Wikipedia
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Growing details and traits for Nemacladus twisselmannii in the Library.
No cultivars in the Library yet — the full profile above covers the species itself.