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Taxon  Report  
Cordylanthus rigidus  (Benth.) Jeps.  ssp. littoralis  (Ferris) T. I. Chuang & Heckard
Seaside bird's beak
Cordylanthus rigidus ssp. littoralis is an annual herb (hemiparasitic) that is native to California, and endemic (limited) to California.
also called Cordylanthus littoralis ssp. littoralis
California Rare Plant Rank: 1B.1 (rare, threatened, or endangered in CA and elsewhere).
State of California status: Endangered.
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
Observation Search
~128 records in California
yellowone or more occurrences
within a 7.5-minute quadrangle

Bloom Period
Parent: Cordylanthus rigidus
Genus: Cordylanthus
Family: Orobanchaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Habitat: coastal, dunes

Communities: Coastal Strand, Northern Coastal Scrub, Coastal Sage Scrub, Closed-cone Pine Forest, Southern Oak Woodland, Foothill Woodland, Chaparral

Name Status:
Accepted by JEF + CNPS + PLANTS

Alternate Names:
CNPSCordylanthus littoralis ssp. littoralis
JEF + PLANTSCordylanthus littoralis
PLANTSCordylanthus rigidus var. littoralis
Information about  Cordylanthus rigidus ssp. littoralis from other sources
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora


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Key Characteristics: Erect annual herb, a root parasite, 3?15 dm tall, the entire plant yellow (chlorotic),; flowers 5?8 in compact, head-like clusters; outer bract lobed in distal 1/2, middle lobe lanceolate, tip tapered, inner bract 14?20 mm; corolla 15?20 mm, yellowish, lower side marked maroon in U-shape, pouches white (Wetherwax and Tank 2013). C. rigidus is a variable species with geographically separated but intergrading races (Chuang and Heckard 1986). In our region, it is distinguished rom sspp. rigidus and setigerus by shape of outer inflorescence bracts (see drawings) and generally by color (reddish and with higher chlorophyll concentrations in the latter two subspecies, this perhaps indicating a lesser nutritional reliance on parasitism.

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 07/24/2024).