Anthurium timplowmanii Croat

Epiphyte to lithophyte; stem short, 8-10 cm; internodes 3-5 mm, 8-10 mm diam.; cataphylls ca. 2 cm, persisting as pale brown to brown fibers; petioles erect, 9.2-32.8 cm, (1-)3-5 mm diam., terete, rigid, drying light olive-green, striate; geniculum 1-2 cm; blades narrowly ovate, (7.5-)14.5-29.5 x (3-)6.3 11.5 cm, 2.4-2.6x longer than wide, 0.6-1.1x as long as petiole, broadest near base, narrowly acuminate at apex, acumen 1.8-3 cm, subcordate at base, the lobes overlapping, drying subcoriaceous; both surfaces semiglossy when fresh; adaxial surface light olive-green, drying matte; abaxial surface dark olive green, drying semiglossy; margins entire and semi crisped; anterior lobe (7.3-)13-27 cm; posterior lobes 0.2-3 cm, up to 5.4 cm wide, rounded at apex; midrib drying slightly raised, diminishing toward apex adaxially and abaxially, drying light yellowish green adaxially, drying light yellow abaxially; basal veins 3 pairs, all free to base, drying inconspicuous; primary lateral veins numerous, 23 to 27 pairs per side, not obvious when fresh, weakly raised adaxially, flat and obscure, much paler, prominulous on drying abaxially, arising from midrib at ca. 90° midway, spreading almost straight or weakly arcuate to the margin, to ca. 45° toward apex, and ca. 45° toward the base, but soon reflexed and forming a broad sigmoid curve toward the margin; interprimary veins less prominent than primary lateral veins; collective vein arising from the 2nd basal vein, as prominent as primary lateral veins, 2-7 mm from margin. INFLORESCENCE mature, erect; peduncle erect, 5.7-27.5 cm, drying 1-2 mm diam., terete, ca. 1/2 as long as petiole, drying light yellowish green; spathe erect-spreading, inserted at ca. 70°, 3-7.5 cm x 4-10 mm, lanceolate, subcoriaceous, green, drying light yellowish brown, narrowly long-acuminate at apex, acumen 7-8 mm long, acute at base, the margins meeting at ca. 60° angle, 4/5 to as long as spadix; stipe 4-6 mm long in front, 1-1.6 mm in back; spadix erect, subcylindric, 2.7-7.1 cm, 2-3 mm diam. at apex, 2.5-3 mm diam. at base, 13-24x longer than wide, yellowish green to blue-green or brown, drying light yellowish brown, held at ca. 180°. Flowers square to rhombic, 1.8-2.1 x 1.9-2.5 mm, drying light brown, 5 to 6 flowers visible in the principal spiral, 3 to 4 flowers visible in the alternate spiral; tepals matte, almost erect against pistil on drying, lateral tepals outer margins broadly triangular, inner margins broadly rounded, sometimes drying concave; pistils drying paler; stigma slit-like, drying pale. INFRUCTESCENCE not seen.