Anthurium birdseyanum

Hemiepiphyte; internodes 2–3 cm long, 3.5–4 mm diam., grey and glossy, drying 3 mm diam., densely ridgedfolded, matte; cataphylls c. 3.8–4 cm long, deciduous. Leaves with petiole subterete, narrowly flattened and obscurely sulcate adaxially, drying 6–9.4 cm long, 1–1.5 mm diam., brownish, densely speckled; blade oblong- lanceolate, widest near or above the middle, narrowly caudate-acuminate at apex, cordulate at base, 15– 23 cm long, 3.7–4.3 cm wide, averaging 21 × 3.8 cm, 5.1–6.4 × longer than wide, 2.4–3.2 × longer than petiole, moderately thin, weakly glossy and slightly bicolorous, drying dark yellow-brown above, slightly paler and yellow-green to somewhat yellowish brown below; upper surface minutely granular on magnification; lower surface more conspicuously granular on magnification; midrib narrowly raised in valley above, paler and thicker than broad below, drying concolorous above, slightly paler below; primary lateral veins 5–6 pairs, arising at 45–50°(–60°) angle, weakly sunken above, weakly raised below, much less conspicuous than collective veins; interprimary veins drying undulate; basal veins 2 pairs, the 1st pair forming the collective veins 1–3 mm from margin. Inflorescence erect, 12 cm long; peduncle 8.5 cm long, drying c. 1.5 mm diam.; spathe lanceolate, 3.7 cm long, 8 mm wide, narrowly acuminate at apex, green, spreading-recurved, drying brown; spadix stipitate, 2.3–19 mm long, creamy white, drying reddish brown, 2.5 mm diam. Flowers 3–4 visible per spiral, 1.7 mm wide in both directions, drying markedly granular with a few pale linear inclusions; lateral tepals 1 mm wide, the outer margins 3-sided, the inner margins rounded; stamens not seen.