Anthurium jenmanii Engl.

Epiphytic, epilithic or terrestrial; stem short, (1)1.5-3 cm diam.; roots dense, spreading to ascending, pale green to brownish, thick and blunt, ca. 5-10 cm long, 3-6 mm diam.; cataphylls broadly lanceolate, subcoriaceous to coriaceous, (3)5-7 cm long, acute at apex, drying dark brown, persisting semi-intact or as a reticulum of fibers. LEAVES erect to erect-spreading; petioles (3)7-20(38) cm long, 6-15 mm diam., bluntly to sharply D-shaped, flattened to weakly convex adaxially, rounded abaxially, the surface pale-speckled; geniculum slightly paler and moderately thicker than petiole, 0.5-2.5 cm long; sheath 1-6 cm long; blades coriaceous, broadly oblanceolate to elliptic (rarely ovate-elliptic), shortly and abruptly acute (rarely long-acuminate or obtuse-rounded) at apex, narrowly acute to obtuse to broadly truncate to sometimes weakly subcordate at base, (22)40-103 cm long, (8)11-52 cm wide, broadest near the middle or in the upper fourth, the margins moderately and broadly undulate; upper surface semiglossy to glossy, yellowish green, lower surface matte to weakly glossy, moderately paler, drying yellow-green, matte; midrib flat at base, soon becoming bluntly acute above and conspicuously paler than surface, prominently convex to higher than broad at base, becoming obtuse-rounded toward the apex below, slightly paler than surface; primary lateral veins 5-13 per side, departing midrib at 30-60° angle, broadly arcuate-ascending to the margin, the uppermost merging into a collective vein, raised near midrib, sunken at margin, moderately paler than surface above and below; interprimary veins absent except near the base, less conspicuous than primary lateral veins; tertiary veins sunken above, raised below, raised when dried; reticulate veins prominulous above and below when dried; collective vein arising in the upper third of blade or absent, equally as prominent as primary lateral veins, 6-15 mm from margin. INFLORESCENCES spreading-erect to spreading-pendent, equalling or longer than leaves; peduncle 26-86 cm long, 5-9(15) mm diam., 3.4-6 x as long as petiole, pale-speckled, colored like petiole, sometimes ringed with purple, terete to elliptic; spathe reflexed, usually soon withering and becoming twisted, subcoriaceous, pale green tinged with purple, becoming purple at anthesis, oblong to lanceolate, 11-50 cm long, 1.5-4.5 cm wide, broadest near the base, inserted at 30-60° angle on peduncle, acuminate at apex (the acumen 8 mm long), narrowly acute to obtuse, sometimes decurrent for 3-4 cm at base; stipe absent or to 4-5 cm long in front, to 1 cm long in back; spadix dark maroon to dark purple, sometimes bluish pre-anthesis, tapered to cylindroid, usually sessile to weakly stipitate, nearly straight to slightly curved, 10.4-47 cm long, 6-9(12) mm diam. near base, ca. 4 mm diam. near apex, broadest at the base; flowers rhombic, 1.8-2.7 mm long, (1.3)1.7-2.2 mm wide, the sides straight to slightly sigmoid; 6-14 flowers visible in principal spiral, 6-10 in alternate spiral; tepals matte to semiglossy, minutely papaate; lateral tepals 1-1.2 mm wide, slightly convex, erose, the outer margins 2-sided; pistils not emergent, whitish; stigma slitlike, colored like tepals, 0.5 mm long; stamens emerging in a slow, regular sequence from the base, the laterals preceding the alternates by 7-12 spirals, the 3rd stamen preceding the 4th by 1-8 spirals, held against the pistil and obscuring it; anthers pale yellow to orange, 0.4-0.5 mm long, 0.5-0.7 mm wide; thecae ovoid, divaricate; pollen yellow, fading to whitish, moderately sweet-scented. INFRUCTESCENCE pendent; berries pale reddish purple to purple or white tinged with violet apically, obovoid, rounded at apex, to 10 mm long, 7 mm diam.; seeds 2 per berry, oblong to obovoid, 8 mm long, 3 mm diam.