Anthurium terracolum [Croat ]

Anthurium terracolum

General description:

Terrestrial; internodes 1.5-5.5 cm long, 4-5 mm diam.; cataphylls persisting as fibers, intact at upper nodes, 3-4 cm long, drying tan; petioles 3-8.5 cm long (averaging 5.4 cm), 1-2 mm diam., erect-spreading, sharply C-shaped, sulcate; blades ovate-elliptic, acuminate at apex, rounded at base, 7-16 cm long, 3-6.5 cm wide (averaging 11.4 x 5 cm), 1.9-2.5 times longer than broad, 1.5-3.5 times longer than the petioles, broadest at or somewhat below middle, thinly coriaceous; upper surface dark green and matte; lower surface moderately paler and weakly glossy, sometimes bicolorous; midrib narrow, convex, and moderately paler above, acute and slightly paler below; primary lateral veins 9-11 per side, departing midrib at 60°-75° angles, etched above, weakly raised below; collective vein arising from near base, 3-6 mm from margin; INFLORESCENCES erect; peduncle 7-12 cm long, 1.5 mm diam.; spathe erect, green to cream, clasping elongated peduncle/stipe; spadix green, becoming weakly tinged purple, cylindroid, 2-4 cm long, 2-3 mm diam.; stipe to ca. 3.5 cm long. Flowers 2-3 per primary spiral, 1.1-1.3 mm long, 1.0-1.2 mm wide. INFRUCTESCENCES with berries pale green at base, dark green at apex, longer in one dimension (4x5 mm wide, 3.5 mm high), depressed apically; seeds 2 per berry, oblong-elliptic, 3 mm long, 2 mm diam., tan.

General Description Reference:

Thomas B. Croat, Pu Huang, Jeffrey Lake, Carla V. Kostelac, 2009. Araceae of the Flora of Reserva La Planada, Narino Department, Colombia (Part 1)

Distribution Reference:

Thomas B. Croat, Pu Huang, Jeffrey Lake, Carla V. Kostelac, 2009. Araceae of the Flora of Reserva La Planada, Narino Department, Colombia (Part 1)

Distribution:

Anthurium terracolum is currently known from Colombia (Cauca, Narino, Risaralda, Tolima, Valle del Cauca) to Ecuador (Napo and Carchi), at elevations of 1,750- 2,450 m, in Lower monlane rain forest, Lower montane wet forest and Premontane wetforest. In La Planada, it is found in regrowth secondary forest with elements of primary forest, along the trail above La Posada and along the trail to El Hondon.

Taxonomy

Taxonomic Notes:

This species is a member of sect. Xialophyllium, and is recognized by its internodes longer than broad, persistent cataphyll fibers, C-shaped petioles, and small nearly elliptic epunctate blades, short-acuminate at apex with a pair of prominent collective veins and usually a second pair of collective veins near the base and finally by its long stipitate, slender spadix. Anthurium terracolum is similar to A. gracilistipum, w hich also has long-stipitate spadices. A. gracilistipum differs in being usually epiphytic and having longer internodes, intact cataphylls on upper nodes and more near ovate blades, while A. terracolum is almost exclusively terrestrial, and has short internodes, fibrous cataphylls and more near elliptic blades. A collection from the Dept. of Huila (Fosberg 19944) from the Cordillera Oriental at 2,300 m in the headwaters of Rio Villalobos along the border of Huila and Cauca boundary may also be this species but it differs in lacking cataphyll fibers and in having blades which dry pale grayish green on the lower surface. The Foster 19944 collection is very similar to a collection (Jorgenson 61977) from Napo Province in Ecuador near Cosanga at 2,150 m. They both perhaps represent another new species.

Taxonomic Notes Reference:

Thomas B. Croat, Pu Huang, Jeffrey Lake, Carla V. Kostelac, 2009. Araceae of the Flora of Reserva La Planada, Narino Department, Colombia (Part 1)

CATE Araceae

Araceae

Anthurium terracolum Croat

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