Tetrapterys discolor (G. Mey.) DC., Prodr. 1: 587. 1824; Triopterys discolor G. Mey.

Bejucos, lianas, or woody vines (rarely described as shrub); young branchlets initially abundantly to densely appressed sericeous, rapidly glabrescent, the trichomes all sessile or with longest stalks less than 0.025—0.05 (0.1) mm, longest trabeculae 0.025—0.75 mm, straight. Larger leaves 8—14 × 3—7 cm, elliptic, chartaceous, lateral veins not at all to slightly raised on abaxial surface evaluated by touch, adaxial surface glabrous or appressed sericeous on midrib only, rapidly glabrescent, abaxial surface glabrous or sparsely appressed sericeous on and near  midrib, rapidly glabrescent, trichomes all sessile or with longest stalks less than 0.025—0.05 mm, the longest trabeculae 0.5—1 mm, straight (or nearly so), larger abaxial glands clustered in basal 1/10th of blade halfway between midrib and margin or nearer midrib or not restricted to base and all similar size per side of midrib 1—7 halfway between midrib and margin to nearer midrib, the base rounded to cuneate, the margin without glands, the apex acuminate or less frequently obtuse and then cuspidate; stipules connate, together (1-) 2—3 mm × 0.5—1.5 mm, drying brown the margins usually lighter, flat, appressed to stem or then slightly curving away at apex, deciduous; petiole at non-branching and non-inflorescence bearing nodes 0.5—1 cm × 0.75—1.25 mm, sparsely appressed sericeous, rapidly glabrescent. Inflorescence leaves longer than wide to ca. equal in length, abaxially sparsely appressed sericeous, inflorescence branch, peduncle and pedicel indumentum white, the branches sericeous to appressed tomentose; bracts 0.75—1.25 mm; peduncles 2—4.5 mm, abundantly appressed tomentose, trichome trabeculae straight, sinuous and usually tortuous persisting sparsely to lost in fruiting; bracteoles 0.5—1 × 0.5—1 mm, positioned at or slightly below apex of peduncle, spreading from base or clasping at base then spreading; pedicels 2—3.75 mm, even when in young bud with indumentum present only on one side (or with few trichomes apically and basally on otherwise glabrous sides) appressed tomentose, trichome trabeculae straight, sinuous and often tortuous persisting sparsely to lost in fruit, side without indumentum drying brown. Flowers with sepals abaxial surface glabrous above glands, regularly or irregularly ciliate; lateral petals with limbs 2.75—3.5 (3.75) mm; stamens with filaments abaxially glabrous above base, anthers with connectives adaxially glabrous; style apices dorsally broadly flattened and slightly curved. Samara wings sparsely sericeous above base, two upper lateral wings 1.2—2.4 × 0.5—1 cm, the length 1.8—3.3 (3.7) × the width, apex obliquely truncate or rounded to obtuse, two lower lateral wings 0.5—1.2 × 0.3—0.6 cm, the upper wings ca. 1.5—2.5 × as long as the lower, the lateral wings free, the upper appearing to attach to the nut slightly more distal than the lower, the dorsal wing widest near midpoint or apex on the dorsal side of nut, 2—5.5 mm wide on dorsal side and 0.5—1.5 mm wide on ventral side, attached dorsally at base of nut, entire or wavy, projections between dorsal wing and lateral wings several or few and these irregularly divided or lobed, the longest 2—6 mm; nut 3.5—5 × 2.75—4 mm, 0.75—1.5 mm thick, densely spreading tomentose over appressed sericeous or tomentose, the trichomes with longest stalks 0.05—0.25 mm, longest trabeculae 0.5—1 mm, straight and sinuous. 

Expected in Nicaragua. In printed Flora this name was used for what is being treated here as Tetrapterys sp. 1; Mexico (Chiapas), Guatemala, Costa Rica, Panama, Colombia, Venezuela, Guyana, Surinam, Ecuador, Peru, Bolivia, Brazil, Trinidad and Tobago.