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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 martiniana D. Don

Habit, vegetative morphology.— Tree, evergreen, 5–8 m tall. Current year's branchlets glabrous. Branchlets older than one year smooth or furrowed, greyish or brownish or reddish, glabrous. Lenticels on current year's branchlets present. Internodes 0.2–2.5 cm. Stipules caducous, deltoid or linear-triangular, 0.4–0.6 mm. Petiole glabrous, smooth surface or rough or grooved surface, 5–14 mm. Lamina ovate or elliptic or obovate, oblong (1:2), 5–13 X, 2.5–6.5 cm, papyraceous or coriaceous, glabrous abaxially. Base acute or obtuse or rounded (rarement arrondie). Apex rounded or obtuse or acute, not mucronate. Apex retuse or rounded or acuminate (rarement rétus). Acumen 0–1.4 cm. Margin plane or revolute (finement), crenate or dentate, teeth inconspicuous or conspicuous. Teeth 8–20 ca., over the entire length of the margin. Midbrid adaxially impressed, glabrous. Midbrid abaxially raised, glabrous. Secondary veins abaxially evident, 5–9 pairs. Tertiary veins abaxially evident or obscure. Ponctuation abaxiallly present (peu visible).

Inflorescences.— Thyrsoid or thyrse, heterocladic, with subthyrsoids alternate.

Male flowers.— Thyrses axes fasciculate and axillary. Thyrses axes 0.7–3.5 cm. Cymes of order 1–2. Peduncles pubescent. Peduncles of order 1 1–4 mm. Pherophylls of order 1 at 0–7 tenth from the base. Peduncles of order 2 0.8–1.5 mm. Pherophylls of order 2 at 0–1 tenth from the base. Bracts deltoids or linear-triangular, pubescent, 0.3–0.8 mm, margin entire or margin ciliate or dentate. Pherophylls of order 1 opposite or subopposite, deltoid or linear-triangular, pubescent, 0.3–0.5 mm, margin entire or margin ciliate. Male flowers 4 -merous. Calyx pubescent, 1.2–2.2 mm in diam., margin ciliate or dentate. Corolla 1.7–2.4 mm, petals connate on, petals 20–25 % of their length. Apex margin ciliate. Stamens at the anthesis equal to corolla or shorter than corolla. Rudimentary ovary subglobulous or flattened, glabrous.

Female flowers.— Thyrses axes fasciculate and axillary. Thyrses axes 0.5–4.5 cm. Cymes of order 1–2. Peduncles pubescent. Peduncles of order 1 0.5–5 mm. Pherophylls of order 1 at 2–5 tenth of the base. Peduncles of order 2 0.5–2 mm. Pherophylls of order 2 at 1–3 tenth of the base. Bracts deltoids, pubescent, 0.3–0.7 mm, margin entire or margin ciliate or dentate (rarement entière). Pherophylls of order 1 opposite or subopposite, deltoids, pubescent, 0.2–0.4 mm, margin ciliate. Female flowers 4 -merous. Calyx pubescent, margin ciliate or dentate, 2–3 mm in diam. Corolla 1.7–2.2 mm, petals connate on, petals 20–25 % of their length. Apex margin ciliate. Staminodes sagittate, pubescent. Ovary ovoid or spherical, glabrous, stigma capitate, stigma glabrous or pubescent (parfois).

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

Distribution, ecology.— South America, Colombia Trinidad and Tobago British Guyana, 20 -570–680 m, Forêt hygrophile. Open,moist white-sand savanna.

Flowering.— March (fructification).

Illustrations.— • Dessin in Berry & al. (1995). Fl. Venezuelan Guayana. • Planche Schomburgk 193 K f & Schomburgk 385 K m (IT1 de paniculata)). • Inflorescence Schomburgk 193 K f. • Inflorescence Schomburgk 193 K f. • Planche Schomburgk [385] K m (IT2). • Planche Schomburgk [385] K m (IT3) & Hancock 192 K ?. • Inflorescence Schomburgk [385] K m (IT3). • Planche Schomburgk 385 BM m (IT1 d'I. paniculata). • Planches Schomburgk 385 BM m (IT2 d'I. paniculata) & Schomburgk [193] BM f. • Planche Schomburgk [193] BM f. • Planche Cowan 1143 S f.


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).