Clematis pickeringii A.Gray
Gray, A. (1854) United States Exploring Expedition (Wilkes Expedition) Botany. Phanerogamia 1: 1. Type: Ovolau, Feejee Islands, Dr Pickering & Mr Brackenridge. Holo: GH.
Clematis, Tropical; Tropical Clematis
Leaflet blades 3-5-veined, about 5-12.5 x 2.5-7 cm, leaflet stalks about 1-4 cm long. Compound leaf petioles and leaflet stalks both modified to form a type of tendril when suitably stimulated. Compound leaf petioles about 9-15 cm long. Terminal buds densely clothed in pale brown to golden hairs.
Flowers cream, about 12 mm diam., perfumed. Tepals about 5-10 x 2-3 mm, hairy on the outer surface. Male flowers: Stamens about 40. Female flowers: Staminodes ten. Carpels 30-40, each carpel green and densely clothed in white silky hairs which extend to the apex of the style. Ovary + style and stigma about 7-8 mm long. Ovules one per carpel.
Cotyledons ovate, about 7-10 x 5-6 mm, apex obtuse perhaps mucronate, base attenuate. Venation not obvious. First pair of leaves produced just above the cotyledons almost forming a whorl with the cotyledons. First pair of leaves ovate to cordate, 3-veined, margins toothed. At the tenth leaf stage: leaf blade cordate, apex acuminate, base auriculate, margin toothed with 5-7 teeth on each side but mainly towards the base. Lateral veins three or four on each side of the midrib. Petiole about as long as the leaf blade and twisted to form a tendril. Seed germination time 38 to 55 days.
Sometimes cultivated, this is a vigorous and showy vine that needs to be trained over a trellis or fence.