Sidalcea robusta

Sidalcea robusta
Conservation status
Imperiled (NatureServe)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Malvales
Family:	Malvaceae
Genus:	Sidalcea
Species:	S. robusta
Binomial name
Sidalcea robusta A.Heller ex Roush[1]

Sidalcea robusta is an uncommon species of flowering plant in the mallow family known by the common name Butte County checkerbloom.^[1]

Description[]

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This rhizomatous perennial herb produces a sturdy stem which can exceed a meter in height. Sidalcea robusta is mostly hairless above with sparse hairs near the base. The leaves are divided into pointed lobes and have bristly hairs on their upper surfaces. The inflorescence is a long, open series of flowers which can be 30–40 cm (12–16 in) in length. The flowers each have five pale pink petals up to 3.5 cm (1.4 in) long that turn yellowish as they dry.

Distribution[]

Sidalcea robusta is endemic to Butte County, California, where it is known from about 20 occurrences, including some near Chico. It is a resident of chaparral and woodland habitat in mountain foothills.

It is an Endangered species listed by the California Native Plant Society Inventory of Rare and Endangered Plants and The Nature Conservancy.^[2][3]

References[]

External links[]

• Calflora Database: Sidalcea robusta (Butte County checkerbloom)
• Jepson Manual eFlora (TJM2) treatment of Sidalcea robusta^{[permanent dead link]}
• USDA Plants Profile for Sidalcea robusta (Butte County checkerbloom)
• UC CalPhotos gallery: Sidalcea robusta

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