Notes on the Breeding Systems of Sacoila Lanceolata (Aublet) Garay (Orchidaceae)

To document breeding systems in the Mensa neotropical terrestrial orchid, Sacoila paula Nati pollination and seed development were studied in the field and in cultivated plants.In the s ern Florida study area, plants of var./anceolata were not pollinated ; and hummingbird pollinators were apparently absent.When plants from ea were abundant in southern Ontario, huoyalagbini-ñollinstiop was observed on numerous occasions and the incidence of pollination was approximately 90%.Pollination experiments demonstrated a reliance on pollen vectors in plants of var.lanceolata from central Guyana, where a variety of hummingbird pollinators are available, but the plants of the same variety from southern Florida were found to be agamospermic.Examination of serial sections of ovaries in successive developmental o in portions of the tropical range.Plants of S. ' lanceolata var.paludi cola from southern Florida were found to self-pollinate.I ponnani indepe in southern Florida populations of S. lanceolata var.lanceolata and v dia and the apparent absence of races totally nul upon pollen vectors are aoc With pollinator-paucity Sacoila lanceolata (Aublet) Garay var.lanceolata is a reddish-to orange-yellow-or occasionally pale greenish-flowered, terrestrial orchid with a broad neotropical distribution extending from northern Florida and northern Mexico to northern Uruguay (Luer, 1972).be urpis: var.paludicola Luer is restricted to extreme southern Florida [the Siar eines Strand in Collier Co. (Luer, 1971a), Kendall Hammock in Dade Co. (pers.obs.), and from one location in the Everglades (McCartney, 1985)] and the Caribbean region (based on examination of specimens at AM Catling, Paul M. 1987."Notes on the Breeding Systems of Sacoila Lanceolata (Aublet) Garay (Orchidaceae)."