• Scientific Name: Turnera ulmifolia L.
• Ref: Sp. Pl.:271. 1753
• Synonyms:
  • Turnera alba Liebm.
  • T. angustifolia Miller
  • T. chamaedrys Klotzsch
  • T. cistoides Baill.
  • T. corchoroides Klotzsch
  • T. cuneifolia Juss. ex Urb.
  • T. cuneiformis Bello
  • T. frutescens Mill. ex Steud.
  • T. obtusifolia Sm.
  • T. odorata Vahl ex DC.
  • T. surinamensis Miq.
  • T. ulmifolia var. alba Rose
  • T. ulmifolia var. angustifolia (Mill.) DC.
  • T. velutina Presl
  • T. virgata Willd. ex Schult.
• English Common Name: yellow alder, ramgoat dashalong, cat bush
• Chinese Common Name: 黄时钟花 huáng shízhōng∙huā
• Family: Passifloraceae
• Genus: Turnera
• Distribution: Sheltered locations; 0–10 m; native to C. America
• Photo: 06/21/2009, South China Botanical Garden, Guangdong

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. (FNA Vol. 6)

06/21/2009, South China Botanical Garden