Difference between revisions of "Brickellia longifolia"
Amer. Naturalist 7: 301. 1873.
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Revision as of 18:46, 24 September 2019
Shrubs, 20–200[–250] cm. Stems branched from above bases, ± glabrous. Leaves alternate; petioles 0–5 mm; blades 3-nerved from bases, lance-elliptic, lance-ovate, lance-linear, or linear (folded or falcate), 10–130 × 2–9 mm, bases rounded or tapering, margins entire or nearly so, apices acuminate, faces gland-dotted, often puberulent (shiny). Heads in (leafy) paniculiform arrays. Peduncles 0–3 mm, glabrous or glutinous. Involucres cylindric, 5–7 mm. Phyllaries 10–24 in 6–8 series, pale green to stramineous, 3–5-striate, unequal, (glutinous) margins scarious; outer ovate (apices acute), inner lanceolate (apices obtuse). Florets 3–7; corollas cream, 3.5–4.5 mm. Cypselae 1.8–2.5 mm, scabrous; pappi of 30–40 barbellulate bristles.
Distribution
w United States.
Discussion
Varieties 2 (2 in the flora).
Selected References
None.
Key
| 1 | Leaf blades lance-elliptic to lance-linear or linear, 10–130 × 2–9 mm, lengths 8–25 times widths, flat (not folded or falcate), bases tapering | Brickellia longifolia var. longifolia |
| 1 | Leaf blades lance-ovate to narrowly lanceolate, 10–130 × 2–15 mm, lengths 4–8 times widths, folded along midveins and/or falcate, basesrounded | Brickellia longifolia var. multiflora |