Fleischmannia tamboensis (Hieron.) R.M. King & H. Rob., Phytologia 19: 206. 1970

Robinson, Harold, 2015, The genus Fleischmannia in Argentina, Bolivia, Brazil and Paraguay (Eupatorieae, Asteraceae), PhytoKeys 57, pp. 61-92 : 82

Fleischmannia tamboensis (Hieron.) R.M. King & H. Rob., Phytologia 19: 206. 1970

Eupatorium tamboense Hieron., Bot. Jahrb. Syst. 22: 770. 1897. Type: Bolivia. Tarija: an der Cuesta del Tambo, between El Tambo and Narvaëz, June 1873, Lorentz & Hieronymus 888 (holotype B, destroyed, photos GH, US).

Description.

Subshrub, erect, ca. 1 m tall; stems terete and glabrate below, upwardly with spreading purplish glandular pubescence, internodes to 10 cm long; branches spreading at 45-80° angles. Leaves opposite; petioles 0.5-1.5 cm long, with reddish glandular hairs; leaf blades membranaceous, rhomboid-ovate to ovate-lanceolate, to 5 cm long, to 2.2 cm wide near base, base rounded to shortly cuneate, margins each with 5-11 teeth, teeth 0.5-1.3 mm long, acute and mucronate, apex acute, adaxial surface scabridulous, abaxially scabrid on veins; triplinervaate from petiole. Inflorescence pyramidal, with slender branches ending in loose cymes; peduncles 5-6(-12) mm long, densely puberulous. Heads with involucres ca. 6 mm high, involucral bracts ca. 20-23, gradate in 5-6 series, outer ovate, ca. 1.5 mm wide, densely puberulent, greenish to purplish outside, inner bracts linear-lanceolate, to 4.5 mm long, ca. 0.8 mm wide, subacute. Florets 16-21 in a head; corollas lilac, ca. 3.2 mm long, lobes ca. 0.7 mm long and wide, short-triangular, anther thecae not seen. Achenes ca. 1.75 mm long, with ribs lighter-colored, sparsely setuliferous; pappus with ca. 20 tenuous noncontiguous bristles, ca. 3 mm long.

No specimens have been seen that match the description. The specimen that matches best is one cited by Robinson (1920) "Bolivia: La Paz, South Yungas, Sirupaya near Yanacachi, alt. 2100 m, Buchtien 191 (300) (NY, US)" distributed as Eupatorium stipuliferum . This specimen cited by Robinson has glands on the peduncles but no reddish hairs, and it is from La Paz, not Tarija. The other specimen cited by Robinson (1920) "Bolivia: Cochabamba, Río Juntas, alt. 900 m, April 1892, Kuntze s.n. (NY, US)." first annotated as Eupatorium marginatum , has densely puberulous but eglanduliferous peduncles without reddish hairs. This latter specimen remains unplaced at this time.

The species described after the Robinson 1920 treatment, Fleischmannia yungasensis (B.L. Rob.) R.M. King & H. Rob. seems closest to Fleischmannia tamboensis with its reddish hairs and stipitate glands, but it differs by its lower stems and leaves also being densely covered with stipitate glands and by its white corollas.