Anthurium miaziense Croat

Epiphyte 2 m from ground; stem short; internodes short, 2.6-2.9 cm diam. (averaging 2.7 cm); cataphylls drying intact at upper node, greyish green-brown, rust colour at base, soon mostly deciduous, with only a layer of short pale fibres persisting, length uncertain. Leaves erect spreading with petiole, blade ± pendent, petiole 49.6-56.9 cm long (averaging 52.2 cm), 0.3-0.6 cm diam., terete, adaxial surface sulcate, abaxial surface rounded, margins obtusely raised, drying brown to dark brown, paler at base; geniculum 2.5-2.9 cm long, 4-5 mm wide, concolorous with and of same width as petiole; blade sagittate-hastate, 36.5-44.6 cm long, 22.2-26.6 cm wide (averaging 40.6 x 24.4 cm), 1.7-1.8 longer than broad, 0.74-0.82 longer than petiole, broadest at base, moderately coriaceous, drying weakly glossy to matte; upper surface matte and semiglossy, brown to dark greyish brown, lower surface semiglossy, dark brown to dark yellowish brown, moderately bicolorous, drying brownish to dark brown above, brownish to reddish brown below, glands absent; anterior lobe 28.7-31.6 cm long, broadly rounded apically, apex gradually acuminate, straight to concave along margin towards base; posterior lobes 11.5-16.8 cm long, 7.2-8.2 cm wide, spreading somewhat outward; sinus broadly spathulate and parabolic, 8.1-9.7 cm deep, 4.8-6.8 cm wide; midrib drying concolorous with blade above, orange-brown to dark red brown below, midrib shape bluntly acute and narrowly rounded above, broadly convex or round raised below; basal veins 5-6, usually coalesced into a ±  straight posterior rib, rarely 1st free to base, 3rd and 4th coalesced 8.2-16.6 cm; posterior rib 6-10.5 cm long, naked along sinus 2.3-3.8 cm; primary lateral veins 6-9 pairs, arising at an acute angle, 35-40° toward apex and middle, 70-90° below middle, then spreading at a 70-90° angle, scarcely more conspicuous than interprimary veins, all major lateral veins on upper surface quilted sunken; collective veins arising from 2nd basal vein, 4-6 mm from margin; upper surface drying densely and minutely granular with an array of larger pale pustular excretions as well as a dense array of pale short-linear cellular inclusions; lower surface drying nearly smooth, sparsely pale short-lineate. Inflorescence spreading; peduncle 39.4-61 cm long (averaging 47.9 cm); spathe green, 15-16.4 cm long, 1.3-1.6 cm wide, linear-lanceolate, spreading, emerging from peduncle at a 45° angle, 3 dimensional shape fully expanded; spadix sessile, 25.1 25.3 cm long, 8-9 mm diam., slightly tapered, greenish violet. Flowers 7-8 visible per spiral, 3.3-4 mm long; tepals minutely granular to pustulose-granular, lateral tepals 1.7-1.9 mm wide, the outer margin 2-sided, inner margin broadly rounded; stamens 5 mm long, 0.6 mm wide, thecae narrowly ovate, broadly divaricate. Berry colour and seeds per locule not known.