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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 obtusata Colombie Triana

Habit, vegetative morphology.— Tree or shrub, evergreen, 2–7 m tall. 10 cm dbh (pour 5 à 6 m de haut). Current year's branchlets glabrous or pubescent. Branchlets older than one year smooth or furrowed or rough, greyish or brownish, glabrous or pubescent, sparse trichomes or dense short trichomes. Lenticels on current year's branchlets present (parfois peu visibles). Internodes 0.2–4 cm. Stipules persistent or caducous, linear-triangular, 1–3 mm. Petiole pubescent, smooth surface (épais), 3–15 mm. Lamina elliptic (rarement très légèrement ovale ou obovale), oblong (1:2) or lanceolate (1:3) (rarement orbiculaire par déformation), 2–11.5 X, 1–6.5 cm, coriaceous (épais), glabrous abaxially or pubescent abaxially (surtout sur la face inférieure). Base acute or obtuse or rounded or truncate or cordate. Apex rounded or obtuse or acute, mucronate or not mucronate. Apex retuse or emarginate or rounded or acuminate. Acumen 0–0.5 cm. Margin plane or revolute (souvent seulement à la base), crenate or dentate, teeth inconspicuous or conspicuous. Teeth 4–14 ca., over the entire length of the margin or on the distal half of the margin. Midbrid adaxially impressed or flat or raised (parfois très légèrement imprimée ou proéminente), glabrous or pubescent on proximal half or pubescent (rarement glabre). Midbrid abaxially raised, pubescent (parfois peu de poils). Secondary veins abaxially evident, 4–15 pairs. Tertiary veins abaxially evident or obscure. Ponctuation abaxiallly present.

Inflorescences.— Solitary dichasium.

Male flowers.— Cymes of order 2–3. Peduncles pubescent. Peduncles of order 1 7–15 mm. Pherophylls of order 1 at 7–9 tenth from the base. Peduncles of order 2 1–6 mm. Pherophylls of order 2 at 4–7 tenth from the base. Peduncles of order 3 1–3.5 mm. Pherophylls of order 3 at 2–7 tenth from the base. Peduncles of order 4 0.5–2 mm. Pherophylls of order 1 opposite, deltoid or linear-triangular, pubescent, 1–5 mm, margin entire (poilue). Male flowers 4–7 -merous, white. Calyx pubescent, 2.5–3.6 mm in diam., margin ciliate or dentate. Corolla 2.5–3 mm, petals connate on, petals 20–25 % of their length. Apex margin ciliate. Stamens at the anthesis shorter than corolla. Rudimentary ovary subglobulous or flattened, glabrous.

Female flowers.— Cymes of order 1–2. Peduncles pubescent. Peduncles of order 1 3.5–14 mm. Pherophylls of order 1 at 8–10 tenth of the base. Peduncles of order 2 0–1 mm. Pherophylls of order 1 opposite or subopposite (rarement subopposées), linear-triangulate, pubescent, 1–5.5 mm, margin ciliate (poilue). Female flowers 4–7 -merous, white or of another color than white, yellow or green (roses). Calyx pubescent, margin ciliate or dentate, 4.5–7 mm in diam. Corolla 4–5 mm, petals connate on, petals 15–25 % of their length. Apex margin entire (possibly beaded) or ciliate. Staminodes sagittate, glabrous. Ovary glabrous or pubescent, stigma mamillate, stigma glabrous.

Fruits.— Fruit red or black or green or of another color than red, black or green (violet), spherical or flattened, 5–12 mm in diam., 5–11 mm.

Distribution, ecology.— South America, Colombia Venezuela, 2500–3400 m, Forêt, Quercetum lindenii, forêt de Quercus humboldtii, sabana rubia.


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).