Nepenthes micramphora

Nepenthes micramphora

Synonymy

Nepenthes micramphora V.B.Heinrich, S.McPherson, Gronem. & V.B.Amoroso in McPherson, Pitcher Plants of the Old World 2: 1315 (713-719, 1314-1319; figs. 387-391, 739). 2009 sec. Heinrich & al. 2009
    • Holotype (designated by Heinrich, V.B., McPherson, S. R., Gronemeyer, T. & Amoroso, V.B. 20091): Philippines, Mindanao Island, Davao Oriental Province, Mt. Hamiguitan, alt. 1300 – 1600 m, V. Amoroso & R. Aspiras CMUH 00003545 (CMUH).
  • 1. Heinrich, V.B., McPherson, S. R., Gronemeyer, T. & Amoroso, V.B. 2009: Nepenthes micramphora (Nepenthaceae), a new species of Nepenthes L. from southern Mindanao, Philippines, pp. 1314-1319. – In: McPherson, S. R., Pitcher Plants of the Old World 2

Description

Terrestrial climber, to 2 m tall. Stems cylindrical, to 3.5mm diameter, glabrous, internodes 2-15 mm. leaves sessile, coriaceous, glabrous, lanceolate-elliptic, 40-80 mm long x 7-1O mm wide, apex acute, base slightly attenuate, clasping the stem for 1/3 its circumference, not decurrent. Longitudinal veins 2-3 on each side of the midrib, pennate nerves numerous, running obliquely to the margin; tendril length 30 - 75 mm, diameter 0.5-1 mm, forming an S-shape 20 mm above pitcher base, or coiling around adjacent supports. Pitchers dimorphic, glabrous; lower pitchers almost cylindrical, infundibuliform towards the tendril, slightly waisted one third from the base, widening towards peristome, 25-41 mm long, 12-16 mm wide, with 2 fringed wings; wings 2-4 mm wide, fringe segments filiform, ca. 3 mm long, 2.5-3 mm apart; inner surface of the bottom third of pitcher glandular; peristome 0.8 mm wide, cylindric; mouth oblique; column 0.8-1.8 mm; operculum reniform, slightly wider in diametre than mouth, 15-20 mm long x 13-18 mm wide, held horizontally or slightly raised; spur filiform, 2-3 mm long, bifurcate; upper pitchers infundibuliform, with a waist of up to 8 mm wide below the peristome, 37-67 mm long x 9-20 mm wide; operculum of same diameter as mouth. Female inflorescence 250-350 x 6 mm at widest part; peduncle 80 mm long, 1 mm diameter; Pedicels 1-flowered, c. 20-40, 3-4 mm long, bracts absent; tepals ovate, 2-2.5 x 1-1.2 mm; Fruit valves 17-20 mm long. Seed unknown. Indumentum absent from stem and leaves; inflorescence conspicuouly ferruginous-tomentose, hairs simple, 0.1 mm long, tepals minutely tomentose. Colour of pitchers yellowish-green, with dense red speckles that may dominate the yellow base color in direct sunlight; peristome yellow, occasionally blushed red. Speckles of lower pitchers generally purple. Speckles of lower pitchers generally purple. Pitcher interior uniformly green to yellow. A

Distribution (General)

Philippines, Mindanao, Mount HamiguitanA

Habitat

Ultramafic substrates in exposed locations, 1100-1635 m a.s.l.A

Bibliography

A. Heinrich, V.B., McPherson, S. R., Gronemeyer, T. & Amoroso, V.B. 2009: Nepenthes micramphora (Nepenthaceae), a new species of Nepenthes L. from southern Mindanao, Philippines, pp. 1314-1319. – In: McPherson, S. R., Pitcher Plants of the Old World 2

Specimens

CountryDateCollector + collecting numberHerbariaTypeScanDerivatives
PhilippinesAmoroso, V.B. & R. Aspiras CMUH 00003545CMUH
Citation: Philippines, Mindanao Island, Davao Oriental Province, Mt. Hamiguitan, alt. 1300 – 1600 m, V. Amoroso & R. Aspiras CMUH 00003545.

Specimen summary: CMUH
Holotype of Nepenthes micramphora V.B.Heinrich, S.McPherson, Gronem. & V.B.Amoroso