Anthurium bicordoense [Croat ]

Anthurium bicordoense

General description:

Internodes 3.6-13 cm long, .4-.8 cm diam., drying light yellowish gray, ribbed, slightly granular, few-dispersed pale inclusions, moderately glossy; cataphylls 8.2-9.3 cm long, .8-1.4 cm wide, drying greenish gray, pale lineate, persisting as pale fibers; petioles 18.3-27.7 cm long, 2.0-3.5 mm wide, subterete, drying yellowish brown but greenish gray at base, few deeply ribbed, slightly glossy, dark inclusions, slightly granular; geniculum .7-1.4 cm long, 2-4 mm wide, drying a darker yellowish brown, finely many-ribbed; blades broadly ovate, 23.2-33.5 cm long, 13.2-25.4 cm wide, 1.5 times longer than broad, abruptly acuminate at apex, subcordate at base, drying medium, green above, light greenish gray below; upper surface densely granular; lower surface moderately smooth, weakly pale, short-lineate; anterior lobe 17.8-27.8 cm, rounded to broadly rounded; posterior lobes 3.8-4.4 cm, 4.3-9.2 cm wide, narrowly rounded; sinus arcuate to parabolic, 2.7-4.5 cm deep, 4.5-4.7 midway; basal veins 4-5 pairs, 1 st-3rd free to base, 4th fused 1.2-2.1 cm, 5th fused 1.8-3.2 cm; posterior rib naked 1.6-2.1 cm; midrib narrowly rounded to bluntly acute and concolorous above, narrowly round-raised and paler below; primary lateral veins 9-10 on both sides, arising at 45-50°, narrowly rounded to convex and concolorous above, narrowly raised and narrowly round-raised and granular below; tertiary veins weak on upper surface, weakly raised and concolorous below; collective veins arising from 3rd basal vein, 2-4 mm from margin. INFLORESCENCES with peduncle 8.4-15.8 cm long, 1-3 mm wide, many-deeply ribbed, cellular inclusions, slightly darker than petiole; spathe spreading, 5 cm long, .7 cm wide, 7 times longer than broad, drying greenish gray, finely many-ribbed, pale-lineate; spadix green to yellow, 4.8-5.2 cm long, 3-4 mm diam., 14 times longer than broad, stipitate 3-4 mm; flowers 5 visible per spiral, .9-1.4 cm long, .9-1.1 cm wide; tepals darkly-color, moderately granular, lateral tepals .7-.8 mm, inner margins rounded, outer margins 3-4-sided, sometimes with 2 obtuse angles and one rounded side.

General Description Reference:

Thomas B. Croat, Keith Lee, Whitney Wodstrchill, Carla V. Kostelac, 2011. New Species of Anthurium (Araceae) from South America

Distribution Reference:

Thomas B. Croat, Keith Lee, Whitney Wodstrchill, Carla V. Kostelac, 2011. New Species of Anthurium (Araceae) from South America

Distribution:

Anthurium bicordoense is believed to be endemic to Colombia, known only from the valley of the RIO San Juan in Choco Department at less than 100 m elevation in a Tropical rainforest life zone.

Taxonomy

Taxonomic Notes:

The species is a member of sect. Xialophyllum, characterized by its elongate, light grayish-brown-drying internodes, cataphylls persisting mostly as pale fibers, subterete petioles about as long as the blades, the ovate-elliptic, greenish-drying blades which are broadest between the middle and the petiolar plexus as well as by a long-petiolate inflorescence with a green spathe and the slender, cylindroid, green to yellow short-stipitate spadix. The species is closest to Anthurium oblongo-cordatum Engl. but that species differs in having blades that are about 2.5 times longer than broad. It also occurs only at higher elevation 1,100 to 2,530 m elevation. The species is also close to Anthurium porcesitoense Croat, another member of sect. Xialophyllium with blades of similar shape and which also has scattered pale cellular inclusions on the lower surface. That species differs in occurring above 1,100 m and by having stems drying brown, the upper blade surfaces drying densely, closely and more densely granular (including on the veins) Anthurium bicordoense may also be confused with smaller plants of A. breviscapum Kunth but that species is typically found in the drainage of the Amazon basin and also differs in having a dark purplish spadix.

Taxonomic Notes Reference:

Thomas B. Croat, Keith Lee, Whitney Wodstrchill, Carla V. Kostelac, 2011. New Species of Anthurium (Araceae) from South America

CATE Araceae

Araceae

Anthurium bicordoense Croat

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