Cordylanthus tenuis subsp. pallescens

(Pennell) T. I. Chuang & Heckard

Syst. Bot. Monogr. 10: 55. 1986.

Common names: Pale bird’s-beak
EndemicConservation concern
Basionym: Cordylanthus pallescens Pennell Proc. Acad. Nat. Sci. Philadelphia 99: 197. 1947
Treatment appears in FNA Volume 17. Treatment on page 677. Mentioned on page 676.

Stems sparsely puberulent and/or glandular-puberulent and, often, pilose. Leaves yellow-green, entire or 3-lobed, lobes linear to linear-lanceolate. Inflorescences 4–6-flowered; bracts yellow-green, 3-lobed or entire, sparsely pilose with long hairs. Flowers: corolla 10–15 mm. 2n = 28.

Phenology: Flowering Jun–Sep.
Habitat: Open volcanic alluvium.
Elevation: 900–1200 m.


Subspecies pallescens grows in Siskiyou County near Black Butte and the town of Weed (B. L. Wilson et al. 2014). It is similar to subsp. viscidus, differing in its yellow-green color and inflorescences with four to six pale flowers.

Lower Taxa

Kerry A. Barringer +
(Pennell) T. I. Chuang & Heckard +
Cordylanthus pallescens +
Pale bird’s-beak +
900–1200 m. +
Open volcanic alluvium. +
Flowering Jun–Sep. +
Syst. Bot. Monogr. +
wilson2014a +
Endemic +  and Conservation concern +
Adenostegia tenuis +
Cordylanthus tenuis subsp. pallescens +
Cordylanthus tenuis +
subspecies +