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Araceae/Ecuador | Family List | Araceae | Anthurium

Anthurium pallatangense Engl., Bot. Jahrb. Syst. 25: 385. (1898).

Anthurium rumicifolium Sodiro, Anales Univ. Centr. Ecuador 15: 5. (1901). Type: Ecuador. Cotopaxi: Angamarca, 3000 m, Sodiro s.n. (B, holotype). Anthurium albopunctatum Sodiro, Anales Univ. Centr. Ecuador 22: (156): 22. (1906). Type: Ecuador. Pichincha: Nanegal, Sodiro s.n. (B, holotype).

Terrestrial or epiphytic; stem ca. 30–50 cm long, 1.5–2 cm diam.; leaf scars obscured by root mass, 0.5 cm high, 1 cm wide; roots dense, descending, greenish, drying tan to grayish, smooth to somewhat pubescent, slender and elongate, tapered at apex, ca. 4–26 cm long, 1–4 mm diam.; cataphylls lanceolate, 4–11 cm long, acuminate at apex, drying reddish brown, persisting as pale, fine, linear fibers. Leaves spreading-erect; petioles 10–33 cm long, 3–8 mm diam., terete to subterete, sometimes obtusely flattened adaxially, rounded abaxially; geniculum obscurely flattened, scarcely darker than petiole, 0.6–2 cm long; blades subcoriaceous, narrowly to broadly elliptic, occasionally oblanceolate, gradually acuminate at apex, slightly attenuate to narrowly acute to obtuse to subtruncate at base, 20–56 cm long, 4–15 cm wide, broadest at or near the middle; upper surface matte to semiglossy, dark to medium green, lower surface glossy to semiglossy, much paler; both surfaces drying matte to semiglossy, bright green to yellowish; midrib round-raised at base, becoming very narrowly and sharply raised (knife-like) toward the apex above, prominently and convexly raised with a sharp rib below; primary lateral veins 12–35 per side, departing midrib at 45–55 degree angle, more or less straight to the collective vein, prominently and sharply raised above, flat to raised below, very sharply raised above when dried; interprimary veins drying almost as conspicuous as primary lateral veins, sharply raised above; tertiary veins obscure, drying prominulous; collective vein arising from the base, scarcely visible above, flat below, less prominent than primary lateral veins when dried, 3–11 mm from margin. Inflorescences spreading-erect, shorter than leaves; peduncle 6.2–29(38) cm long, 2–6 mm diam., (0.9)1.9–2.7 times as long as petiole, pale green, tinged with violet-purple, subterete to angulate; spathe spreading to reflexed and recurled, subcoriaceous, green to green tinged with purple at margins and on veins, oblong-lanceolate, 2.5–7 cm long, 7–10 mm wide, broadest near the base, inserted at 65 degree angle on peduncle, acute to shortly acuminate at apex (the acumen apiculate), acute at base; stipe 7–10 mm long in front, 3–6 mm long in back; spadix maroon to purple, becoming brown (B & K red-purple 2/7.5), cylindroid, sometimes slightly tapered at apex, 3–8 cm long, 3–6 mm diam. midway; flowers 4-lobed, 2.1–2.4 mm in both directions, the sides jaggedly sigmoid; 3–5 flowers visible in principal spiral, 6–8 in alternate spiral; tepals matte, weakly papillate, with droplets; lateral tepals 1–1.3 mm wide, the inner margins straight to convex, slightly turned up against the pistil, the outer margins irregularly 3–4-sided; pistils raised, green; stigma ellipsoid; stamens emerging in a scattered pattern from the base of the spadix; filaments transparent, thick, exserted, soon retracting, holding anthers at level of the tepals, ca. 0.3 mm long, 0.4 mm wide; anthers yellowish heavily tinged with maroon, 0.6 mm long, 0.9 mm wide, inclined over and obscuring the pistil; thecae oblong, not divaricate; pollen orange, fading to tan. Infructescence with spathe persisting; spadix 6 cm long, 1.3 cm diam.; berries purple, obovoid, truncate at base, rounded and somewhat mammilliform at apex, 6–6.8 mm long, 3.7–4.5 mm diam.; seeds 2 per berry, brownish, oblong, flattened, rounded at both ends, 3.2–3.5 mm long, 2.2–2.5 mm diam., 1.5–1.7 mm thick, enveloped by gelatinous, translucent, amber substance.

Type: Ecuador. Cotopaxi: vic. Angamarca, Sodiro s.n. (B, holotype). Anthurium rumicifolium Sodiro, Anales Univ. Centr. Ecuador 15: 5. (1901). Type: Ecuador. Cotopaxi: Angamarca, 3000 m, Sodiro s.n. (B, holotype). Anthurium albopunctatum Sodiro, Anales Univ. Centr. Ecuador 22: (156): 22. (1906). Type: Ecuador. Pichincha: Nanegal, Sodiro s.n. (B, holotype).

Carchi: 7.8 mi SE of Maldonado, rd. to Tulcan, 400 m, 0°53'N, 78°5'W, Thompson & Rawlins 888 (CM); Maldonado--Tulcan, Km 205, 2400--2600 m, Werling & LethNissen 362 (QCA). Chimbhorazo: Pallatanga, Sodiro 24 (B). Cotopaxi: Angamarca, ca. 3000 m, Sodiro s.n. (B); 11 Nov 1899, 238 (B). Pichincha: Aloag--Santo Domingo, San Ignacio, 2000 m, Sparre 14687, 17742 (S); Quito--Santo Domingo, 1600 m, 0°12'S, 78°47'W, Cerón et al. 7969 (MO); Bosque Protector Maquipucuna, 2000 m, 0°2.5'N, 78°37'W, 1 Sep 1993, Webster et al. 30189 (DAV); 2200 m, 0°4.5'N, 78°36.5'W, 16 Jul 1992, Webster et al. 29413 (DAV); Parroquia Nanegal, 1385 m, 0°10.5'N, 78°40'W, 13 Jan. 1995, Webster et al. 31262 (MO). Machachi--Santo Domingo, 40.8 km E of Alluriquin, 2050 m, 0°26'S, 78°40'W, Thompson & Rawlins 1094 (CM); Tandayapa--Mindo, 15.1 km beyond Tandayapa, 2400 m, Croat 49374 (MO, QCA); Nono--Nanegal, NW of Quito, 11--12 km NW of Nono, 2200--2270 m, Croat 38837 (MO); Nanegal, Sodiro s.n. (B); Mindo--Tandayapa, 10 km SW of Tandayapa, 2200 m, 0°0'N, 78°32' 40"W, Croat & Rodriguez 61545 (MO). Chiriboga Road: Chiriboga--Santo Domingo de Los Colorados, El Volante, 1900 m, Asplund 17418 (S); Quito--Santo Domingo de Los Colorados, 19 km S of San Juan, 15 km NE of Chiriboga, 1710 m, 0°17'S, 78°43'W, Croat 50621 (MO). Rio Alambi: Nono--Tandayapa, km 43--45, 2000--2500 m, Sparre 17016 (S); Quito--Puerto Quito, 13 km NW of Nono, 2225 m, Luteyn & LebronLuteyn 6523 (NY). Volcán Pichincha, W side: Tandayapa--Mindo, 2300 m, 0°2'S, 78°42'W, Croat 50256 (MO, RSA, SM).


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