Anthurium caloveboranum Croat

Epiphyte; stems less than 15 cm long, ca. 1 cm diam.; leaf scars obscured by cataphylls; roots slender, numerous, descending; cataphylls thin, 2.5-3.5 cm long, acuminate at apex, drying reddish brown, weathering to fine fibers. LEAVES semi-erect; petioles (8-)15-24 cm long, ca. 5 mm diam., broadly sulcate to flattened adaxially (often drying sharply triangular); geniculum terete, 0.5-1 cm long; blades moderately thick, oblong-elliptic, gradually acuminate at apex, acute at base, 17-29 cm long, 4-6 cm wide, broadest at middle or just below; upper surface semiglossy; dark glandular-punctate and paler below; midrib obtusely raised above, raised below (dry); primary lateral veins 7-10 per side, departing midrib at 35-40° angle; weakly sunken above, prominulous below; interprimary veins (dry) scarcely less prominent than primary lateral veins; submarginal collective veins arising from the base, 3-6 mm from the margin, sunken above, raised below. INFLORESCENCE shorter than leaves; peduncle 13-28 cm long, 2-4 mm diam., equalling or longer than petioles; spathe moderately thin, greenish or green tinged with red or whitish, lanceolate, 2.2-6 cm long, 5-13 mm wide, acuminate at apex, acute at base, inserted at 45° angle on peduncle; spadix green, 7-9 cm long, 4-5 mm diam. near base, 2-3 mm diam. near apex; flowers rhombic to 4-lobed, 3.4-3.6 mm long, 1.8-2.2 mm wide, the sides jaggedly sigmoid, 4-5 flowers visible in the principal spiral, 3-4 flowers visible in the alternate spiral; tepals matte (dry), lateral tepals ca. 2.8 mm wide, the inner margin broadly rounded; pistils not raised, green; stigmas linear, ca. 0.2 mm long; stamens retracted after anthesis. INFRUCTESCENCE with berries globose, red, 4-5 mm diam., depressed at apex; seeds 3-11, ovate-ellipsoid to rarely elliptic, tan, slightly flattened, 2-2.3 mm long, 1-1.8 mm wide, 0.8-1 mm thick.