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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Campanulids
Ordo: Asterales

Familia: Campanulaceae
Subfamilia: Campanuloideae
Genus: Campanula
Species: Campanula shetleri

Campanula shetleri Heckard, Madroño 20: 231 (1970).
Native distribution areas:

Northern America
Southwestern USA

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
Primary references

Heckard, L.R. 1970 [1969]. A new Campanula from northern California. Madroño 20(4): 231–235. JSTOR Reference page. : 231, fig. 1.


Hassler, M. 2020. Campanula shetleri. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2020. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2020 Oct. 1. Reference page.
International Plant Names Index. 2020. Campanula shetleri. Published online. Accessed: Oct. 1 2020.
Govaerts, R. et al. 2020. Campanula shetleri in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2020 Oct. 1. Reference page.
Tropicos.org 2020. Campanula shetleri. Missouri Botanical Garden. Published on the internet. Accessed: 2020 Oct. 1.

Vernacular names
English: Castle Crags bellflower

Campanula shetleri is a rare species of bellflower known by the common name Castle Crags bellflower. The plant is named for Castle Crags, a mountain formation in its limited native range, within the Shasta-Trinity National Forest.

It is endemic to California, where it is known from fewer than ten occurrences in the southern reaches of the Cascade Range near the border between Siskiyou and Shasta Counties.

Campanula shetleri is a plant of the temperate coniferous forests of the range. This is a small, clumpy perennial herb growing from a woody rhizome. It produces a patch of hairy leaves not more than 5 centimeters high, each leaf leathery in texture with approximately two large pointed teeth on each edge.

The flower is about a centimeter long, white to pale blue with corolla lobes curled back and a protruding style.

The fruit is a ribbed, cup-shaped capsule containing tiny seeds each about millimeter wide.

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