Pinanga sierramadreana

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Pinanga (pih-NAHN-gah)
sierramadreana
(see-air-rah-mahd-reh-AHN-ah)
Pinanga sierramadreana stem.jpg
Floribunda Nursery, Hawaii. Photo by Paul Craft
Scientific Classification
Genus: Pinanga (pih-NAHN-gah)
Species:
sierramadreana
(see-air-rah-mahd-reh-AHN-ah)
Synonyms
None set.
Native Continent
Asia
Asia.gif
Morphology
Habit: Solitary
Leaf type: Pinnate
Culture
Survivability index
Common names
None.

Habitat and Distribution

Philippines. Luzon (Nueva Vizcaya and Quezon Provs.). In dipterocarp forest;
Floribunda Nursery, Hawaii. Photo by Paul Craft
about 800 m. Endemic. (E.S. Fernando. 1994)/Palmweb.

Description

Solitary slender pleonanthic (not monocarpic) monoecious undergrowth palm, to 5 m tall. Stem to 2.5 cm in diam.; internodes 2.5-8 cm long. Crownshaft elongate, cylindrical, slightly swollen, to 34 cm long. Leaves to 5 in crown; sheath to 27 cm long, greyish-green, covered with greyish-brown scaly indumentum; leaf without sheath to 90 cm long; petiole about 16-35 x 0.7 cm, flattened or only slightly channelled adaxially, convex abaxially, covered with indumentum as the sheath; rachis angular, bifacial adaxially and nearly glabrous, obtusely rounded abaxially and covered with brown scaly indumentum. Leaflets 6-10 on each side of the rachis, unequal, ? sigmoidal, inequidistant, about 2.5-7.5 cm apart, the costae above sharply elevated, slightly glaucescent below when fresh, but drying brownish, ramentae present along the main costae below; basal leaflets 1-2-costate, about 10-16 x 0.8-1.7 cm; middle leaflets 1-6-costate, about 17-25 x 1.3-7 cm; apical leaflets 6-9-costate, about 14 x 8 cm, joined at the base to 10 cm along the rachis, + cuneiform, the tips incised to as many lobes as there are costae, the lobes to 2 cm long and further incised at their tips to 8 mm deep. Inflorescence infrafoliar, pendulous; prophyll not known; peduncle about 3-5 x 0.5 cm, flattened; main axis to 4.5 cm long, tapering distally; rachillae often 6-8, rarely to 11, borne 0.7-2 cm apart, each about 11-19 cm long, flattened and ± straight, to 2 mm wide, 1 mm thick when dry; the subtending bract very narrowly annulate, shortly apiculate at middle part to 0.5 mm; peduncle and rachillae purplish-red when young. Staminate and pistillate flowers not known. Infructescence pendulous. Fruiting perianth depressed-cupular, 2 mm high, 3 mm across, with a flat base and contracted mouth, the sepals and petals free and imbricate, subequal, glabrous, glossy when dry; the subtending bract a very low explanate, semi-annular collar. Fruit distichous, about 8-13 mm apart, green ripening red then purplish-black, fusiform-ellipsoid or ovoid, about 1.2 x 0.6 cm, shortly beaked; epicarp drying light brown and finely striate; mesocarp thinly fibrous; seed ovoid, about 1.0 x 0.5 cm, acute at tip, caudiculate at base; endosperm ruminate; embryo basal. (E.S. Fernando. 1994)/Palmweb. Editing by edric.

This species resembles P. isabelensis in growth habit and size and in general features of the infructescence and fruits, but differs in the glaucescent greyish-brown scaly indumentum of the leafsheath and in the leaflets much shorter, glaucescent on the undersurface and drying light brown. A sheet at PNH (Gutierrez 61-289) collected from Sancad, Palanan in nearby Isabela Province probably also belongs here. (E.S. Fernando. 1994)

Culture

Comments and Curiosities


External Links

References

Phonetic spelling of Latin names by edric.

Special thanks to Geoff Stein, (Palmbob) for his hundreds of photos.

Special thanks to Palmweb.org, Dr. John Dransfield, Dr. Bill Baker & team, for their volumes of information and photos.

Glossary of Palm Terms; Based on the glossary in Dransfield, J., N.W. Uhl, C.B. Asmussen-Lange, W.J. Baker, M.M. Harley & C.E. Lewis. 2008. Genera Palmarum - Evolution and Classification of the Palms. Royal Botanic Gardens, Kew. All images copyright of the artists and photographers (see images for credits).

Fernando, E.S. 1994. New Species of Pinanga (Palmae : Arecoideae) from Luzon Island, Philippines. Kew Bulletin, Vol. 49, No. 4, pp. 775-784.


Many Special Thanks to Ed Vaile for his long hours of tireless editing and numerous contributions.

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