Bandeau CJB Retour à l'accueil
Conservatoire et Jardin botaniques de la Ville de Genève

Logo CJB Conservatoire et Jardin botaniques de la Ville de Genève
Monographia Aquifoliacearum - Loizeau Pierre-André & Gabrielle Barriera


Aquifoliaceae of Neotropics

Loizeau P.-A. & G. Barriera

Ilex yutajensis Wurdack

Habit, vegetative morphology.— Shrub, evergreen, 2 m tall. Current year's branchlets glabrous. Branchlets older than one year smooth or furrowed, greyish, glabrous. Lenticels on current year's branchlets present. Internodes 0.4–1.3 cm. Stipules caducous, deltoid, 0.5 mm. Petiole glabrous, rough or grooved surface, 5–8 mm. Lamina elliptic, oblong (1:2), 7–8 X, 3.5–4 cm, coriaceous, glabrous abaxially. Base rounded. Apex rounded, not mucronate. Apex acuminate. Acumen 0.3 cm. Margin revolute, crenate, teeth inconspicuous. Teeth 5–6 ca., over the entire length of the margin. Midbrid adaxially flat, glabrous. Midbrid abaxially raised, glabrous. Secondary veins abaxially obscure, 4–5 pairs. Tertiary veins abaxially obscure. Ponctuation abaxiallly present.

Inflorescences.— Thyrse, proliferating.

Female flowers.— Thyrses axes solitary and axillary. Thyrses axes 0.2 cm. Cymes of order 1. Peduncles glabrous. Peduncles of order 1 5–7 mm. Pherophylls of order 1 at 1–2 tenth of the base. Bracts deltoids, glabrous, 5–8 mm, margin entire. Pherophylls of order 1 opposite, deltoids, glabrous, 0.4 mm, margin entire. Female flowers 4 -merous. Calyx glabrous, margin entire, 2.5 mm in diam.

Fruits.— Fruit spherical, 4–5 mm in diam., 4–5 mm.

Distribution, ecology.— South America, Venezuela, 1500 m.

Flowering.— January or December (? fruit en février).

Illustrations.— • Dessin in Berry & al. (1995). Flora of the Venezuelan Guayana. • Dessin. • Dessin: Maguire 35398 S femelle. • Planche Maguire 35398 K f (IT). • Infrutescence Maguire 35398 K f (IT). • Limbe, face ? Maguire 35398 K f (IT). • Planche Maguire 35398 NY.

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