Turnera ulmifolia var. ulmifolia
Subshrubs or shrubs, 0.5–2 m; hairs simple and glandular, glandular hairs microcapitate. Leaves not aromatic; petiole (1.5–)4–27 mm, with 2 apical nectaries; blade elliptic to ovate, 3.5–15 × 1.3–5.7 cm, base attenuate to cuneate, margins not revolute, serrate, apex acute or acuminate, surfaces pilose. Inflorescences epiphyllous, 2–4 cm; peduncle adnate to petiole; prophylls inserted at calyx base, ovate, 6–29 × 3–12 mm, often with nectaries. Flowers homostylous; calyx 14–30 mm, tube 5–16 mm; petals bright yellow, 14–30 × 7–20 mm; proximal part of filaments adnate by their margins to floral tube forming 5 nectar pockets, 11–21 mm; anthers basifixed; styles 8.5–21 mm. Capsules globose, 3–8 mm, granulose. Seeds blackish, 2.1–3 × 0.8–1.1 mm; epidermis smooth; aril unilateral, 1.8–3 mm. 2n = 30.
Phenology: Flowering and fruiting Mar–Dec.
Habitat: Sheltered locations
Elevation: 0–10 m
Introduced; Fla., La., s Mexico, West Indies, Central America, introduced also in Asia, Africa, Madagascar, Indian Ocean Islands, Pacific Islands, Australia.
Variety ulmifolia is often planted and has probably escaped from cultivation in various locations.