Araceae
Anthurium caldodsonii Croat
Nomenclature
SUMMARY
Epiphytic; stems to 0.5 m long, rhizomatous; internodes (3 –)6 – 11 cm long, 4 – 7 mm diam., drying matte, dark brown; cataphylls 7 – 9 cm long, 1 – 1.5 cm diam., persisting as fibres at least at uppermost nodes, drying pale to dark brown. Leaves with petiole 1.2 – 5 cm long (averaging 2.2 cm), 2 – 4 mm diam., subterete to terete, broader than thick, finely ribbed, narrowly sulcate adaxially; blade ovate to ovate-elliptic, 9 – 11 × (6 –)9 – 11(– 13) cm (averaging 11.3 × 8.9 cm), 1.3 – 1.4 × as long as wide, averaging 5.6 × longer than petiole, abruptly acuminate at apex, rounded at base, coriaceous, semiglossy to matte, moderately bicolorous, drying light yellow-brown and ± concolorous, the surfaces moderately smooth, eglandular above, dark glandular-punctate below; midrib narrowly rounded above, bluntly acute and paler below; primary lateral veins 6 – 9 per side, departing midrib at 40 – 45° angle, obtusely raised and concolorous above, narrowly rounded and concolorous below, about as prominent as the collective veins; interprimary veins almost as distinct as primary lateral veins; tertiary veins moderately weak on both surfaces; collective veins arising from one of the primary lateral veins very near the base, a secondary pair of collective veins merging promptly with the margins; upper surface drying greyish brown and matte, eglandular; lower surface slightly paler and dark yellowish brown, densely glandular-punctate, the glands moderately small (0.15 mm diam.). Inflorescence erect; peduncle 4.5 – 10 cm long (averaging 6 cm), 2 – 3 cm diam., about 3 × as long as petiole, matte, medium brown; spathe reflexed, 2 – 2.4 × 0.4 – 0.6 cm (averaging 2.2 × 0.5 cm), elliptic, matte, green to greenish purple, drying deep brown; spadix 3.2 – 5.5 cm long, 4 – 7 mm diam., matte, violet-purple, drying deep brown; flowers 9 – 10 visible in the principle spiral, 5 – 7 visible in the alternate spiral, 2.2 – 2.4 × 2 mm; lateral tepals 1 mm wide, the outer margins 2-sided, the inner margin broadly rounded; stamens held at level of tepals, widely spaced on 4 sides of the pistil, 0.12 × 0.2 mm, the thecae ovoid, slightly divaricate.