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Monographia Aquifoliacearum - Loizeau Pierre-André & Gabrielle Barriera


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Aquifoliaceae of Neotropics

Loizeau P.-A. & G. Barriera


Ilex spruceana Reissek

Habit, vegetative morphology.— Tree or shrub, evergreen, 2–5 m tall. Current year's branchlets pubescent (poils très courts). Branchlets older than one year smooth or furrowed, reddish, glabrous. Lenticels on current year's branchlets absent or hardly visible (au moins sur les rameaux de l'année). Internodes 0.5–2.3 cm. Stipules caducous, deltoid or linear-triangular, 0.5 mm (exceptionnellement triangulaire à linéaire-triangulaire et 0.7–0.9 mm de long sur les rameaux de l'année). Petiole glabrous, rough or grooved surface, 5–11 mm. Lamina elliptic, oblong (1:2), 5–11 X, 2.8–6.5 cm, coriaceous, glabrous abaxially. Base acute or obtuse. Apex obtuse, not mucronate. Apex retuse or rounded or acuminate. Acumen 0.1–0.2 cm. Margin revolute, entire. Midbrid adaxially impressed, glabrous or pubescent (poils très courts). Midbrid abaxially raised, glabrous or pubescent (poils très courts). Secondary veins abaxially evident, 5–7 pairs. Tertiary veins abaxially obscure. Ponctuation abaxiallly present (visible à la loupe uniquement).

Inflorescences.— Thyrse, proliferating.

Female flowers.— Thyrses axes solitary and axillary. Thyrses axes 0.7–2.5 cm. Cymes of order 1. Peduncles pubescent (poils très courts, parfois peu nombreux). Peduncles of order 1 2–4 mm. Pherophylls of order 1 at 3–5 tenth of the base. Bracts deltoids, pubescent, 0.5–1.2 mm, margin entire. Pherophylls of order 1 opposite, deltoids, pubescent, 0.2–0.4 mm, margin entire. Female flowers 4 -merous (-5 ?), green. Calyx pubescent (poils très courts), margin entire (entaillée), 3–4.5 mm in diam. Stigma mamillate, glabrous.

Fruits.— Fruit green (immature), ovoid, 5–7 mm in diam., 5–8 mm.

Distribution, ecology.— South America, Venezuela Brazil (Fl. Casiaquiare), 100–175 m, Affleurements rocheux ouverts.

Illustrations.— • Dessin in Berry & al. (1995). Flora of the Venezuelan Guayana. • Planche Spruce 3447 NY f. • Rameau Spruce 3447 NY f. • Infrutescence Spruce 3447 NY f. • Infrutescence Spruce 3447 NY f. • Planche Spruce 3447 G f. • Pédoncule, limbe Spruce 3447 G f. • Planche Spruce 3447 BR f (IT). • Etiquettes Spruce 3447 BR f (IT). • Infrutescence Spruce 3447 BR f (IT).


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).