Difference between revisions of "Cordylanthus tenuis"

A. Gray

Proc. Amer. Acad. Arts 7: 383. 1868.

Common names: Slender bird’s-beak
IllustratedEndemic
Synonyms: Adenostegia tenuis (A. Gray) Greene
Treatment appears in FNA Volume 17. Treatment on page 676. Mentioned on page 667, 670, 673.
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Revision as of 22:38, 13 August 2020

Stems erect to ascending, 20–80(–120) cm, glabrous or sparsely glandular-puberulent, puberulent, and/or pilose. Leaves puberulent, often pilose, or glabrous; proximal 20–60 mm, margins entire or 3-lobed, lobes 0.5–1 mm wide; distal 10–40 × 0.3–2 mm, margins entire. Inflorescences spikes, 2–7-flowered, or flowers solitary; bracts 1–4, 5–20 mm, margins entire or 3-lobed, lobes green or purple distally, narrowly lanceolate to linear-lanceolate, apex rounded. Pedicels: bracteoles 10–20 mm, margins entire or toothed. Flowers: calyx 10–20 mm, tube 0 mm, apex 2-fid, cleft 1 mm; corolla pale yellow, marked with purple along veins and galea, 10–20 mm, throat 6–8 mm diam., abaxial lip 4–6 mm, ca. equal to and appressed to adaxial; stamens 4, filaments hairy, fertile pollen sacs 2 per filament, equal. Capsules narrowly ovoid, 5–10 mm. Seeds 6–16, dark brown, ovoid to rhomboid, 1.5–2.5 mm, striate.

Discussion

Subspecies 5 (5 in the flora).

Selected References

None.

Key

1 Leaf lobes filiform; stems glabrous proximally. Cordylanthus tenuis subsp. brunneus
1 Leaves or leaf lobes linear to linear-lanceolate; stems puberulent, glandular-puberulent, glandular-pubescent, and/or pilose proximally. > 2
2 Bracts densely hirsute. Cordylanthus tenuis subsp. barbatus
2 Bracts hirsute or pilose. > 3
3 Bracts entire. Cordylanthus tenuis subsp. tenuis
3 Bracts 3-lobed, sometimes entire. > 4
4 Leaves yellow-green; inflorescences 4–6-flowered. Cordylanthus tenuis subsp. pallescens
4 Leaves green to gray-green; inflorescences 1–3-flowered. Cordylanthus tenuis subsp. viscidus