Anthurium leptocaule Croat

Terrestrial herb, 0.5-1 m tall; stems erect, green to grayish brown, drying gray; internodes 8-12 cm long, 6-8 mm diam.; roots few per node, ca. 1-2 mm diam., spreading; leaf scars inconspicuous; cataphylls thin, drying brownish, remaining more or less intact, persisting briefly at upper nodes, then deciduous. LEAVES few, persisting at uppermost nodes; petioles 16-34 cm long, 2-4 mm diam., terete, narrowly flattened adaxially; geniculum 10-12 mm long, obscurely sulcate; blades ovate to ovate-triangular, gradually to abruptly long-acuminate (the acumen flat, apiculate), cordate to subcordate at base, 14-26 cm long, 8.5-24 cm wide, broadest usually at the base; anterior lobe 14÷30 cm long, the margins broadly rounded to straight, rarely slightly constricted near the base; posterior lobes 6-13 cm long (from apex of sinus to outermost point), directed mostly outward; sinus usually arcuate, sometimes hippocrepiform, rounded at apex; upper surface semiglossy, much paler and matte beneath; midrib acutely raised on both sides; primary lateral veins 3-7 per side, departing midrib at 40-50° angle, curved to the collective vein, weakly sunken above, raised beneath; interprimary veins usually not present; tertiary veins obscure above, conspicuous and darker green than the surface below; collective vein arising from one of the lowermost basal veins, 2-4 mm from the margin, loop-connecting the primary lateral veins. INFLORESCENCE semi-erect; peduncle 10-13 cm long, 2-3 mm diam., terete, one-third to three-fourths as long as the petioles; spathe pale green, oblong-linear, 7.5-9 cm long, 1.1 cm wide, acuminate at apex (the acumen narrowly inrolled), rounded at base, inserted at 45° angle on peduncle, drying with numerous minute raphide cells; stipe ca. 5 mm long, ca. 1.5 mm diam.; spadix greenish white to purple; scarcely tapered, 7.3-11 cm long, 4-5 mm diam. midway, 3-4 mm diam. near apex; flowers square, 2-2.2 mm diam. (dried), the sides moderately straight; 5-8 flowers visible in the principal spiral; tepals semiglossy, the lateral tepals ca. 1 mm wide, the inner margins broadly rounded; the pistils not exserted; stamens emerging promptly from the base, the laterals emerging throughout at least one-half of the spadix before the alternates emerge; filaments weakly exposed (at least on dried specimens); anthers (dried) narrowly ovate, 0.4-0.5 mm long, ca. 0.4 mm wide. INFRUCTESCENCE not seen.