Stylisma pickeringii
Manual ed. 2, 335. 1856.
Common names: Pickering’s dawnflower
Endemic
Basionym: Convolvulus pickeringii Torrey ex M. A. Curtis Boston J. Nat. Hist. 1: 129. 1835
Synonyms: Bonamia pickeringii (Torrey ex M. A. Curtis) A. Gray Breweria pickeringii (Torrey ex M. A. Curtis) A. Gray
Treatment appears in FNA Volume 14.
Stems procumbent or trailing, sparsely hairy. Leaf blades linear, 25–70 × 0.1–3 mm, surfaces glabrous or sparsely hairy. Inflorescences 2–5-flowered or flowers solitary; bracteoles 15–25 mm. Flowers: sepals ovate to ovate-lanceolate, 4–6 × 3–5 mm, abaxial surface fulvous or canescent; corolla white, 10–18 mm; stamens: filaments glabrous or proximally puberulent; style branches usually connate (1/2–)5/6+ length, sometimes less.
Distribution
se United States.
Discussion
Varieties 2 (2 in the flora).
Selected References
None.
Key
1 | Sepal apices usually obtuse, rarely acuminate; style branches 2–3 mm, equal to subequal. | Stylisma pickeringii var. pickeringii |
1 | Sepal apices acute to subacute; style branches 1–1.5 mm, unequal. | Stylisma pickeringii var. pattersonii |