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Conservatoire et Jardin botaniques de la Ville de Genève

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Monographia Aquifoliacearum - Loizeau Pierre-André & Gabrielle Barriera


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Aquifoliaceae of Neotropics

Loizeau P.-A. & G. Barriera


Ilex apicidens N. E. Br.

Habit, vegetative morphology.— Shrub, evergreen. Current year's branchlets glabrous. Branchlets older than one year smooth or furrowed, greyish or reddish, glabrous. Lenticels on current year's branchlets absent or hardly visible. Internodes 0–0.5 cm. Stipules caducous, linear-triangular, 0.5–1 mm. Petiole glabrous, smooth surface, 2.5 mm. Lamina elliptic or obovate, oblong (1:2), 1.3–2.3 X, 1–1.3 cm, coriaceous, glabrous abaxially. Base obtuse or rounded. Apex rounded, mucronate. Apex emarginate or rounded. Margin revolute, dentate, teeth conspicuous. Teeth 2–4 ca., on the distal half of the margin. Midbrid adaxially impressed, glabrous. Midbrid abaxially raised, glabrous. Secondary veins abaxially evident, 4–5 pairs. Tertiary veins abaxially obscure. Ponctuation abaxiallly absent.

Inflorescences.— Thyrse, proliferating.

Male flowers.— Thyrses axes solitary and axillary or terminal. Cymes of order 1–2. Peduncles glabrous. Peduncles of order 1 6–12 mm. Pherophylls of order 1 at 0–1 tenth from the base or 5–7 tenth from the base. Peduncles of order 2 2–4 mm. Pherophylls of order 2 at 0–1 tenth from the base. Bracts linear-triangular, glabrous, 1 mm, margin entire. Pherophylls of order 1 opposite, deltoid, glabrous, 0.3–0.5 mm, margin entire. Male flowers 4–5 -merous. Calyx glabrous, 2–3 mm in diam., margin entire. Corolla 2.5–3 mm, petals free. Stamens at the anthesis shorter than corolla. Rudimentary ovary subglobulous or flattened, glabrous.

Distribution, ecology.— South America, Venezuela (sommet du Mont Roraima), 2800–2900 m.

Flowering.— September or October or November (automne!).

Illustrations.— • Dessin in Berry & al. (1995). Flora of the Venezuelan Guayana. • Planche McConnell 634 K m (HT d'I. apicidens). • Inflorescence McConnell 634 K m (HT d'I. apicidens). • Inflorescence McConnell 634 K m (HT d'I. apicidens). • Planche McConnelll 634 K m (HT de I. apicidens). • Etiquettes, dessins McConnelll 634 K m (HT de I. apicidens). • Rameau McConnelll 634 K m (HT de I. apicidens). • Inflorescence McConnelll 634 K m (HT de I. apicidens).


Cite this publication as: ‘Loizeau, P.-A. & G. Barriera (2007). Aquifoliaceae néotropicales: Descriptions, Illustrations, Identification, et Recherche d'Information. Version: 1st march 2007. http://www.ville-ge.ch/cjb/.
Loizeau (1994) et Loizeau & Spichiger (1992) should also be cited (see Bibliography).