In the treatment of Pectis for the Flora of Panama, Keil (1975) noted that the widespread P. linifolia L. was known to occur both to the north and to the south of Panama but had never been collected in that country. A recent collection of P. linifolia var. linifolia has added this species to the known flora of Panama: Col6n: Punta Chame, D'Arcy 10218 (MO, OS). This taxon would key to P. elongata var. oerstediana in the Flora of Panama treatment. These taxa can be easily distinguished, however. Pectis linifolia var. linifolia has a pappus of stiff, reflexed smooth awns, and its herbage is not scented. Pectis elongata var. oerstediana has a pappus of slender erect scabrous bristles, and the herbage has a strong odor resembling that of lemons or stinkbugs. Synonymy, descriptions, illustrations and a range map for Pectis linifolia have been published by Keil (1978).