Araceae
Anthurium piurensis Croat & Lingán
Nomenclature
SUMMARY
Description based on dried material. Terrestrial; roots white, 0.2–0.5 cm diam.; stem terete, reddish brown; internodes short, 0.2–0.5 cm long, 1.3–2.3 cm diam.; cataphylls subcoriaceous, persisting as a pale brown to reddish brown mass of fibers, (6.2) 8.7–12.4 cm, unribbed, lanceolate, reddish brown, weathering to a reddish brown fibers with fragments of epidermis remaining. Leaves erect to weakly spreading; petioles 42.4–58.8 cm long, 0.4–0.9 diam., D-shaped, generally bluntly 3-ribbed abaxially; green; sheath 1.5–2.4 cm long; geniculum 1.6–2.4 cm long; blades subcoriaceous, 42.2–57.3 cm long, 25.7–30.8 cm wide, widest at the petiole insertion, ovate, semiglossy to matte on both surfaces, acuminate at apex, deeply cordate at base; margins straight to slightly convex on anterior lobe; posterior lobes oblong, convergent, 12.9–13.6 cm long; sinus rhombic; midrib acutely raised in both surfaces; primary lateral veins 6–9 per side, straight toward the base of the blade and curved toward the apex, acutely raised on both surfaces, departing margins at 40–70° angle; basal veins 8 pairs, 1st and sometimes 2nd free to the base; posterior ribs 3.5–6 cm long, strongly curved to the base, naked arising from 1st basal veins, 2–5 mm from the margins. Inflorescence erect; peduncle 26.8–48.1 cm long, 0.2–0.6 cm diam., green, 0.6–0.9 times longer than the petiole; spathe subcoriaceous, purple to green, persisting, erect, hooding spadix, 6.3–10.4 cm long, 2.5–5.4 cm wide, ovate-oblong to elliptic, acute or acuminate at apex, cordate at base; spadix cylindric, 3.7–12.3 cm long, 0.5–1.2 cm diam., stipitate, purple; flowers square, margins weakly to markedly sigmoid, 2 × 2 mm; 7–8 flowers visible on the principal spiral, 5–6 flowers visible in the alternate spiral; tepals straight to slightly concave on the inner margins; pistils with stigmas elliptic; stamens protruding at anthesis; anthers conspicuously extrorse, overlapping the stigmas at anthesis; thecae not divaricate. Infructescence spreading; spadix 24.1 cm long, 2.5 cm diam., reddish purple; berries 0.7 cm long, 0.4 cm wide, obovate, conical at apex.