Flora of North America species comparison

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Cordylanthus laxiflorus

nodding bird's-beak
Stems

erect, 30–90 cm, hirsute to pilose, hairs glandular and eglandular.
Leaves

densely pilose;

proximal 5–20 mm, margins 3-lobed, lobes 1 mm wide;

distal 5–15 × 1 mm, margins entire.
Inflorescences

spikes, 1(–4)-flowered;

bract 1, 5–7 mm, 3-lobed, lobes green or purple, narrowly lanceolate.
Pedicels

bracteoles 10–20 mm, margins entire.
Flowers

calyx 10–17 mm, tube 2 mm, apex 2-fid, cleft 0.5–1 mm;

corolla bright yellow, 15–20 mm, throat 3–5 mm diam., abaxial lip 7–10 mm, shorter than adaxial and slightly spreading;

stamens 4, filaments hairy, fertile pollen sacs 1 per filament, vestigial pollen sacs present.
Capsules

oblong-lanceoloid, 7–8 mm.
Seeds

15–20, light brown, reniform, 1.5–2 mm, reticulate and papillate.
2n

= 26.

Cordylanthus laxiflorus
Phenology Flowering Jul–Oct.
Habitat Rocky slopes, mesas, often limestone.
Elevation 1000–1900 m. (3300–6200 ft.)
Distribution
from FNA
AZ; NM; Mexico (Sonora)
[WildflowerSearch map]
Discussion

Cordylanthus laxiflorus is recognized by its bright yellow corollas with adaxial lip shorter than the galea. Cordylanthus parviflorus also has the abaxial lip shorter than the adaxial; it has pink to purple corollas.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 672.
Parent taxa Orobanchaceae > Cordylanthus
Sibling taxa
C. capitatus, C. eremicus, C. kingii, C. nevinii, C. nidularius, C. parviflorus, C. pilosus, C. pringlei, C. ramosus, C. rigidus, C. tenuis, C. wrightii
Name authority A. Gray: in W. H. Emory, Rep. U.S. Mex. Bound. 2(1): 120. (1859) — (as Cordylanthu)
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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