Flora of North America species comparison

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Cordylanthus pilosus subsp. pilosus

Cordylanthus pilosus subsp. trifidus
Photo is of parent taxon

hairy bird's beak
Photo is of parent taxon

hairy bird's beak, Hansen's bird's-beak
Proximal leaves

1–4 mm wide, margins entire or lobed distally.

1–2 mm wide, margins entire or 3-lobed.
Inflorescences

bracts entire.

bracts 3-lobed.

Cordylanthus pilosus subsp. pilosus

Cordylanthus pilosus subsp. trifidus
Phenology Flowering Jul–Sep. Flowering Jul–Aug.
Habitat Open woodlands and chaparral, sometimes on serpentine. Open woodlands.
Elevation 60–1500 m. (200–4900 ft.) 500–1000 m. (1600–3300 ft.)
Distribution
from FNA
CA
[BONAP county map]
from FNA
CA
[BONAP county map]
Discussion

Subspecies pilosus grows in the Central Valley and Coast Ranges. Plants growing on serpentine appear depauperate, generally have fewer flowers per cluster, and are usually less hairy. Plants that appear to be intermediates between subspp. pilosus and trifidus occur in the Sacramento Valley.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Subspecies trifidus grows in the foothills of the Sierra Nevada. T. I. Chuang and L. R. Heckard (1986) recognized subsp. hansenii as distinct based on its shallowly cleft inflorescence bracts and robust distal branches. These characteristics do not distinguish subsp. hansenii but occur occasionally in plants of both subsp. hansenii and subsp. trifidus. Also, the plants they separated as subsp. hansenii occur in two disjunct populations, separated geographically by their subsp. trifidus. Combining the subspecies creates a geographically, ecologically, and morphologically coherent group.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 674. FNA vol. 17, p. 674.
Parent taxa Orobanchaceae > Cordylanthus > Cordylanthus pilosus Orobanchaceae > Cordylanthus > Cordylanthus pilosus
Sibling taxa
C. pilosus subsp. trifidus
C. pilosus subsp. pilosus
Synonyms C. diffusus, C. pilosus subsp. diffusus C. pilosus var. trifidus, Adenostegia hansenii, C. hansenii, C. pilosus subsp. hansenii
Name authority unknown (B. L. Robinson & Greenman) T. I. Chuang & Heckard: Syst. Bot. Monogr. 10: 68. (1986)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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