Pinanga bicolana 學問
Solitary, moderate, unarmed, Pleonanthic, monoecious palm to 3 m tall. Stem ca. 4 cm diam., internodes to 6 cm long. Crownshaft elongate, cylindrical, slightly swollen, to 60 cm long. Leaves 5-6 in crown; leafsheath ca. 42 cm long, dull light green, covered with dense, brown scaly indumentum; leaf without sheath 75-100 cm long; petiole ca. 25 x 1.3 cm, channelled above, convex below, covered with indumentum as the leafsheath; rachis angular, bifacial above, obtusely rounded below, covered with indumentum as the leafsheath and petiole. Leaflets to l0 on each side of the rachis, unequal, inequidistant, to 6 cm apart, the apex incised to as many lobes as there are costae, dull dark green above and slightly mottled with blotches of lighter shade, ashy puberulous-glaucous underneath, the costae above sharply edged, those beneath covered with brown scaly indumentum; basal leaflets generally unicostate, ca. 17 x 1 cm, ± sigmoidal, long-acuminate; middle leaflets l-6 costate, ca. 40 x 8 cm, ± sigmoidal, cuneiform, narrowed towards the base, apical lobes acuminate-falcate, pendulous, to ca. 7.0-8.5 cm long, generally about 1/5 of leaflet length; terminal leaflet pair to l4-costate, ca. l8.5 x 12.5 cm, the pair joined 14 cm at the base along the rachis, apical lobes falcate-acuminate, to 3.5 cm long. Inflorescence infrafoliar, pendulous; prophyll not known; peduncle ca. 5 x 0.8 cm, flattened, ca. 3-4 mm thick, glabrous, light green becoming orange when fresh; main axis to 8 cm long, tapering distally, ± zigzag when dry; rachillae 5-8, very rarely more, deflexed, distichous, ± in the same plane, borne 3-4 cm apart, each ca. 9-I4 cm long, flattened, to 4 mm wide, 3 mm thick when dry, Iight green becoming orange when fresh, the subtending bract a narrow low collar; triads borne strictly distichouslya long the rachilla. Staminate and pistillate flowers not known. Infructescence pendulous. Fruiting perianth depressed-cupular 3 mm high, 7 mm across, with a broadened mouth; the petals and sepals subequal, glabrous, drying dark brown; sepals valvate, joined at their bases; petals free, imbricate, broader than the sepals; subtending bract as a low explanate, semi-annular collar, almost inconspicuous. Fruits distichous, to 8 mm apart, ripening red then purplish-black, oblong-ellipsoidacla, ca. 2.2 x 1.4 cm, prominently beaked or mammilate, with a collar to 2 mm high and 3 mm wide near the base surrounding the apical stigmatic remains; epicarp drying smooth, sometimes with shallowd epressionsr,a ther thick and crustaceous; mesocarp loosely fibrous; seed broadly ovoid, ca. 9.5 x 9.0 mm, rounded at tip, shallowly concave-truncate at base; endosperm ruminate, embryo basal.
In dipterocarp forest ca. 100-200 m. alt. Endemic.
地點： Philippines (13.620007°N, 123.244629°E)
Pinanga bicolana 疊印圖像 ©2020 Trebrown - 擅自否重新分配。