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Araceae/Ecuador | Family List | Araceae | Anthurium

Anthurium lennartii Croat, Ann. Missouri Bot. Gard. 78(3): 669. (1991).

Description based on dried material only. Epiphytic; stem ca. 1.5 cm diam.; roots moderately numerous, pale grayish, shortly pubescent, moderately elongate, ca. 2–3 mm diam.; cataphylls subcoriaceous, ca. 10 cm long, light brown, persisting as linear fibers, soon deciduous. Leaves with petioles 7–11.5 cm long, 5–7 mm diam., D-shaped, with the margins sharply raised adaxially, probably 2–3-ribbed abaxially; geniculum slightly thicker than petiole, sometimes fissured transversely, 0.8–1.5 cm long; sheath 3.5–5.5 cm long. Blades subcoriaceous, oblong-elliptic, obtuse to semi-rounded at apex (the acumen shortly apiculate), obtuse to narrowly rounded at base, 55–98 cm long, 10–17.5 cm wide, broadest at or near the middle, both surfaces matte, green to yellowish; midrib convexly raised above, somewhat acute at base, becoming prominently convex toward the apex below; primary lateral veins 16–23 per side, departing midrib at (40)55–85 degree angle, arcuate to the collective vein, convexly raised above and below and paler than surface; interprimary veins moderately numerous, raised on both surfaces; tertiary veins weakly raised above and below on; collective vein arising from the base or near the base, less prominent than primary lateral veins, raised above and below, 2–7 mm from margin. Inflorescences with peduncle 20.5–37.5 cm long, ca. 3–4 mm diam., 2.9–3.7 times as long as petiole, greenish to yellowish green, probably terete. Spathe apparently spreading, subcoriaceous, green, broadly linear to linear-lanceolate, 7.5–9 cm long, 1.5–2 cm wide, broadest near the base, abruptly acuminate at apex (the acumen inrolled), acute at base; stipe 13 mm long in front, 3 mm long in back. Spadix green, weakly tapered, 7 cm long, 5–6 mm diam. near base, 4 mm diam. near apex, broadest at the base; flowers rhombic to 4-lobed, 1.6–1.9 mm long, 1.5–1.8 mm wide, the sides usually jaggedly sigmoid, sometimes smoothly sigmoid; 6–8 flowers visible in principal spiral, 5–6 in alternate spiral; tepals roughened; lateral tepals 1–1.3 mm wide, the inner margins erose, broadly convex, the outer margins 2-sided; pistils exposed, yellowish; stigma slit-like, dark, ca. 0.4 mm long; anthers 0.5–0.7 mm long, 0.7–0.9 mm wide; thecae ovoid to oblong-ovoid, 0.3–0.4 mm wide, not divaricate. Infructescence with spathe persisting; spadix 15.5–26 cm long, 2.2–2.5 cm diam., with tepals becoming enlarged and conspicuous, often purplish; berries red to dark purple, after rehydration ovoid to ovoid-ellipsoid, acute to more or less rounded at apex, 6.3–8.5 mm long, 3.7–4.3 mm diam.; pericarp translucent with pale, linear raphide cells; mesocarp gelatinous, translucent, reddish; seeds 1–2 per berry, yellowish, ovoid to oblong-ovoid, flattened, 3–3.5 mm long, 2–2.7 mm diam., 1–1.5 mm thick, enveloped by gelatinous substance.

Type: Ecuador. Loja: Celica﷓Zapotillo Road, ca. 3 km below Pozul, 1400 m, Harling & Andersson 18071 (MO 2908943, holotype; GB 897﷓61, isotype).

Loja: 8 km W of Celica on road to Alamor, 2000 m, Harling & Andersson 22159 (GB); Celica﷓Gauachanama, Km 8, 2700 m, Harling & Andersson 22302 (GB); Celica﷓Zapotillo, 3 km below Pozul, 1400 m, Harling & Andersson 18071 (MO, GB).


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