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Project Name Data (Last Modified On 6/5/2013)
 

Flora Data (Last Modified On 6/5/2013)
Species Mikania amblyolepis B. L. Robinson
PlaceOfPublication Contr. Gray Herb. 61: 11. 1920.
Note TYPE: Colombia, Bolivar, Buena Vista, Pennell 4002 (US, isotype).
Synonym Mikania panamensis B. L. Robinson, Contr. Gray Herb. 104: 41. 1934. TYPE: Panama, around Culebra, Canal Zone, 50-150 m, Pittier 2191 (US).
Description Slender, sparingly branched vines with numerous reddish glands on leaves, branches of inflorescence, and involucral bracts; stems yellowish to reddish, mostly terete, slightly striate, slightly puberulous, usually fistulose. Leaves opposite; blades broadly ovate, to 6 cm long and 4.5 cm wide, the base cordate to deeply cordate, the margins with few to many blunt dentations, the apex bluntly acute to narrowly long-acuminate, the surface glabrous except for numerous reddish glandular punctations, strongly trinervate from the base; petioles slender, 1.0-3.5 cm long. Inflorescence a corymbose panicle with subeymose branches, the heads often in clusters of 3; ultimate branches to 2 mm long, short-puberulous and reddish glandular-punctate. Heads 4.5-5.0 mm high; subinvolucral bract narrowly elliptical to lanceolate, ca. 2 mm long, the subinvolucral and outer involucral bracts puberulous and reddish glandular-punctate; involucral bracts oblong with rounded somewhat fimbriate tips, ca. 4 mm long, ca. 1 mm wide; corolla white, 2.0-2.5 mm long, the tube short, 0.5-0.8 mm long, the limb narrowly funnelform with scattered papillae on the lower inside surface, the lobes about as long as wide and partially recurved when old, the outer surface with scattered reddish glands, the corolla cells oblong, 25 ,. or less wide; anther appendages firm, triangular-ovate; style bases densely papillose, the style appendages with short papillae. Achenes 4-5-ribbed, ca. 1.5 mm long, with many scattered yellowish glands; pappus of ca. 30 slender bristles in 1 series, the tips scarcely enlarged.
Habit vines
Distribution restricted to Panama and northern Colombia.
Note The species can be distinguished readily from the related M. micrantha by the numerous reddish glandular punctations and the round-tipped involucral bracts. Other significant differences are the narrow limb of the corolla and the densely papillose base of the style.
Specimen CANAL ZONE: Around Culebra 50-150 m, Pittier 2191 (US). Balboa, Standley 25634, 29297, 30879 (all US). DARIEN: Rio Chico, from Yaviza at junction with Rio Chucunaque to ca. 1 hour by outboard from junction, Burch et al. 1084 (US). 0-4 mi u11 Rio Sabana from Santa Fe, Duke 4163 (MO). Summit Camp, between Sasardi and Morti, ca. 400 m, Duke 10035 (MO, FSU). Rio Sabana, ca. 4 mi above Santa Fe, ca. 25 m, Duke 10214 (MO, OS). 2 mi E of Santa Fe, Tyson et al. 4820 (MO). PANAMA: 5-6 mi E of Chepo, Duke 4053 (MO). Sabanas near Chepo, 30 m, Hunter & Allen 50 (MO). Pearl Island, Johansen 115 (US). SAN BLAS: Sasardi, ca. 20 m, Duke 10130 (MO, OS). Eslogandi, ca. 200 m, Duke 10194 ( MO, OS).
 
 
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