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Monographia Aquifoliacearum - Loizeau Pierre-André & Gabrielle Barriera


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Aquifoliaceae of Neotropics

Loizeau P.-A. & G. Barriera


Ilex pseudobuxus Reissek

Habit, vegetative morphology.— Shrub, evergreen, 2–4 m tall. Current year's branchlets glabrous or pubescent. Branchlets older than one year smooth or furrowed, greyish, glabrous. Lenticels on current year's branchlets present. Internodes 0–1 cm. Stipules caducous, deltoid, 0.5–0.8 mm. Petiole glabrous (avec des poils très courts sur les jeunes feuilles), rough or grooved surface, 2–7 mm. Lamina obovate, oblong (1:2), 2.5–5.5 X, 1–3.5 cm, coriaceous, glabrous abaxially. Base attenuate or cuneate or acute. Apex rounded or obtuse, mucronate. Apex emarginate or rounded. Margin revolute, entire or dentate, teeth inconspicuous. Teeth 0–2(–8) ca., on the distal half of the margin. Midbrid adaxially impressed or flat, glabrous. Midbrid abaxially raised, glabrous. Secondary veins abaxially evident, 6–8 pairs. Tertiary veins abaxially evident. Ponctuation abaxiallly absent (parfois quelques points à peine visibles).

Inflorescences.— Thyrse, proliferating.

Male flowers.— Thyrses axes solitary and axillary or terminal. Thyrses axes 0.1–17 cm. Cymes of order 3–5. Peduncles glabrous or pubescent (et dans ce cas poils épars très courts). Peduncles of order 1 17–21 mm. Pherophylls of order 1 at 8–9 tenth from the base. Peduncles of order 2 4–9 mm. Pherophylls of order 2 at 7–9 tenth from the base. Peduncles of order 3 2–3 mm. Pherophylls of order 3 at 0–1 tenth from the base. Peduncles of order 4 2–3 mm. Pherophylls of order 4 at 0–1 tenth from base. Peduncles of order 5 1.5–2 mm. Pherophylls of order 5 at 0–1 tenth from the base. Bracts linear-triangular, pubescent, 0.3–0.5 mm, margin entire. Pherophylls of order 1 opposite, linear-triangular, pubescent, 0.3–0.5 mm, margin entire. Male flowers 4 -merous, white. Calyx pubescent (poils peu nombreux), 1.5–2 mm in diam., margin ciliate or dentate (peu de poils). Corolla 2–2.5 mm, petals connate on, petals 10–20 % of their length. Apex margin entire. Stamens at the anthesis shorter than corolla. Rudimentary ovary subglobulous or flattened, glabrous.

Female flowers.— Thyrses axes solitary and axillary or terminal. Thyrses axes 0.3–12 cm. Cymes of order 1–3. Peduncles glabrous or pubescent (poils très courts et peu nombreux). Peduncles of order 1 7–11(–20) mm. Pherophylls of order 1 at 7–9 tenth of the base. Peduncles of order 2 3–4(–6) mm. Pherophylls of order 2 at 0–1 tenth of the base or 6–7 tenth of the base. Peduncles of order 3 3–4 mm. Pherophylls of order 3 at 0–1 tenth of the base. Bracts linear-triangulate, pubescent, 0.5–1 mm, margin entire. Pherophylls of order 1 opposite, linear-triangulate, glabrous or pubescent, 0.3–0.5 mm, margin entire. Female flowers 4 -merous, white. Calyx glabrous (poils très courts et peu nombreux), margin entire, 2–2.5 mm in diam. Corolla 2–3 mm, petals connate on, petals 15–20 % of their length. Apex margin entire (possibly beaded). Staminodes sagittate, glabrous. Ovary spherical, glabrous, stigma capitate, stigma glabrous.

Fruits.— Fruit black, spherical, 3.5–5.5 mm in diam., 3.5–5.5 mm.

Distribution, ecology.— South America, Brazil (Espirito Santo, Minas Gerais, Sao Paulo, Santa Catarina, Paraná, Rio de Janeiro), 500–1000 m (observé 850 m.), Restinga, campo rupestre.

Flowering.— January or February or September or October or November or December.

Vernacular name.— Cauna (Paraná).

Illustrations.— • Planche Sello s.n. W f (ST). • Rameau Sello s.n. W f (ST). • Inflorescence Sello s.n. W f (ST). • Inflorescence Sello s.n. W f (ST). • Planche Riedel s.n. BR f. • Rameau Riedel s.n. BR 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).