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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 micrantha Triana

Habit, vegetative morphology.— Tree or shrub, evergreen, 1.5–8 m tall. Current year's branchlets glabrous or pubescent (quelques poils). Branchlets older than one year smooth or furrowed, greyish or brownish or reddish, glabrous. Lenticels on current year's branchlets present. Internodes 0.1–3 cm. Stipules persistent, deltoid or linear-triangular, 0.5–1.2 mm. Petiole glabrous or pubescent (surtout chez les feuilles de l'année), smooth surface or rough or grooved surface, 4–19 mm. Lamina ovate or elliptic, oblong (1:2), 4–12 X, 2–6 cm, coriaceous (sauf chez les très jeunes feuilles), glabrous abaxially. Base obtuse or rounded. Apex rounded or obtuse or acute (rarement arrondi), mucronate or not mucronate. Apex acuminate. Acumen 0.2–1.5 cm. Margin revolute, entire. Midbrid adaxially impressed, glabrous. Midbrid abaxially raised, glabrous or pubescent (quelques poils disséminés). Secondary veins abaxially evident, 6–11 pairs. Tertiary veins abaxially evident. Ponctuation abaxiallly present or absent (peu visible).

Inflorescences.— Thyrse, proliferating.

Male flowers.— Thyrses axes solitary and axillary. Thyrses axes 0.2–0.8 cm. Cymes of order 2–4. Peduncles pubescent. Peduncles of order 1 3–12 mm. Pherophylls of order 1 at 6–9 tenth from the base. Peduncles of order 2 0.5–2 mm. Pherophylls of order 2 at 0–1 tenth from the base. Peduncles of order 3 0.5–2 mm. Pherophylls of order 3 at 0–1 tenth from the base. Peduncles of order 4 0.3–2 mm. Pherophylls of order 4 at 0–1 tenth from base. Bracts deltoids or linear-triangular, pubescent, 0.4–1.2 mm, margin entire or margin ciliate or dentate. Pherophylls of order 1 opposite or subopposite, deltoid or linear-triangular, pubescent, 0.3–0.6 mm, margin entire or margin ciliate. Male flowers 4–5 -merous (rarement pentamère). Calyx pubescent (peu de poils), 1–2 mm in diam., margin ciliate or dentate. Corolla 1.5–2 mm, petals connate on, petals 10 % of their length. Apex margin entire (très irrégulière). Stamens at the anthesis shorter than corolla. Rudimentary ovary pyramidal or subglobulous or flattened, glabrous.

Female flowers.— Thyrses axes solitary and axillary. Thyrses axes 0.1–0.9 cm. Cymes of order 1–2. Peduncles glabrous or pubescent (quelques poils). Peduncles of order 1 1.5–12 mm. Pherophylls of order 1 at 7–9 tenth of the base. Peduncles of order 2 0.5–1.5 mm. Pherophylls of order 2 at 0–1 tenth of the base. Bracts deltoids or linear-triangulate, glabrous or pubescent, 0.5–1.5 mm, margin entire or margin ciliate or dentate. Pherophylls of order 1 opposite or subopposite, deltoids or linear-triangulate, glabrous or pubescent, 0.5–1.2 mm, margin entire. Female flowers 4–6 -merous, white. Calyx pubescent (quelques poils), margin ciliate or dentate, 1.4–2.5 mm in diam. Corolla 1.7–2.2 mm, petals connate on, petals 20–25 % of their length. Apex margin entire (possibly beaded) (souvent papilleuse). Staminodes sagittate, glabrous. Ovary spherical, glabrous, stigma capitate, stigma glabrous.

Fruits.— Fruit spherical, 2–4 mm in diam., 3–4 mm.

Distribution, ecology.— South America, Colombia (Antioquia et Cauca), 960–1800 m, En lisière de forêt sèche, paturages secs.

Illustrations.— • Dessin: Pennell & Rusby 54 NY f. • Planche Triana 3523 G m (ST). • Rameau Triana 3523 G m (ST). • Inflorescence Triana 3523 G m (ST). • Inflorescence Triana 3523 G m (ST). • Planche Triana 3523 BR m (ST). • Inflorescence Triana 3523 BR m (ST). • Rameau Triana 3523 BR m (ST). • Planche Triana 3523 & 3524 BM m (T). • Planche Triana 3524 BM m (T). • Planche Triana 3523 BM m (T).


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).