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Chorizanthe leptotheca

An annual herb in Polygonaceae native to the Peninsular Ranges of southern California and Baja California, described in 1934 from a type collected between Ramona and Ballena in San Diego County, California, growing up to about 35 cm tall with basal oval leaves and a loose inflorescence of pink to red flowers surrounded by six reddish, curly-haired bracts tipped with hooked awns, blooming from early April through the third week of July, and found in brush, rocky, disturbed, and desert habitats.

Is Chorizanthe leptotheca growing in your garden? Record it and all of your plants in Known.

Common Names

Ramona Spineflower, Peninsular Spineflower

Summary

Ramona spineflower, also known as Peninsular spineflower, is an annual herb native to the Peninsular Ranges of southern California and Baja California. It grows erect up to about 35 cm tall, with basal oval leaves up to 3 cm long; herbage is fuzzy to hairy and reddish. The inflorescence is a loose cluster of pink or red, hairy flowers up to 6 mm wide, each surrounded by six reddish, curly-haired bracts tipped with hooked awns.

Its habitat includes chaparral and forest, with coastal and alluvial fan contexts and plant communities such as Coastal Sage Scrub, Yellow Pine Forest, and Chaparral; distribution spans multiple California counties and Baja California, with NatureServe status G3 (Vulnerable), US N3, and California S3, a range of 20,000–200,000 km2 and an estimated 81–300 occurrences, and about 247 observation records in California; it is categorized as a native wildflower.

Lifecycle

Annual

Height

2-14 inches

Soil Type

Granitic soils (granite sands)

Bloom Color

Pink or red

Bloom Time

Spring to Summer

Foliage Color

Reddish

Fall Foliage Color

Red, Yellow

Growth Rate

Annual

Seasons of Interest

Spring and Summer

Attracts Wildlife

Attracts butterflies

Taxonomy

Taxonomic Rank
Species
Author
Goodman
Publication
Ann. Missouri Bot. Gard. 21: 61 (1934)

Superior Taxa

Kingdom
Plantae
Subkingdom
Pteridobiotina
Phylum
Angiosperms
Order
Caryophyllales
Family
Polygonaceae
Genus
Chorizanthe

References

Peninsular Spineflower - Calscape. calscape.org.
Chorizanthe leptotheca. ceb.wikipedia.org.
Chorizanthe leptotheca - Wikipedia. en.wikipedia.org.
Chorizanthe leptotheca | NatureServe Explorer. explorer.natureserve.org.
Chorizanthe leptotheca | International Plant Names…. ipni.org.
Taxonomy browser (Chorizanthe leptotheca). ncbi.nlm.nih.gov.
Chorizanthe leptotheca. pl.wikipedia.org.
USDA Plants Database. plants.sc.egov.usda.gov.
Chorizanthe leptotheca Goodman | Plants of the Wor…. powo.science.kew.org.
Chorizanthe leptotheca - CNPS Rare Plant Inventory. rareplants.cnps.org.
Chorizanthe leptotheca, C. staticoides, and C. xan…. tchester.org.
Chorizanthe leptotheca | Ramona spineflower. wildflowersearch.org.
Chorizanthe leptotheca - Calflora. calflora.org.
Ramona Spineflower (Chorizanthe leptotheca) | Map …. fws.gov.
World Flora Online. worldfloraonline.org. June 2024.