Gynocoronis spilanthoidesGynocoronis spilanthoidesTaxonomy
Gymnocoronis spilanthoides (D.Don ex Hook. & Arn.) DC., Prodr. 7:266. 1838
Common synonyms
Adenostemma gymnocoronis Sch.Bip.; Adenostemma gymnocoronis Sch.Bip. ex Baker; Alomia spilanthoides D.Don; Alomia spilanthoides D.Don ex Hook. & Arn.; Gymnocoronis attenuata DC.; Gymnocoronis spilanthoides var. attenuata (DC.) Baker; Gymnocoronis spilanthoides var. subcordata (DC.) Baker; Gymnocoronis subcordata DC.; Piqueria attenuata (DC.) Gardner; Piqueria longipetiolata Sch.Bip.; Piqueria longipetiolata Sch.Bip. ex Baker; Piqueria subcordata (DC.) Gardner
Common name
Senegal Teaplant
Description
Propagule or dispersal unit is the fruit. Fertile part 1-1.5 mm long, 0.3-0.5 mm wide, in side view widest in upper part (obovoid), conspicuously curved, the upper (apical) end narrowing, in cross-section flattened (?) or angular (prismatic), basal scar (carpopodium) inconspicuous and undifferentiated, central, beak (=thinner sterile stalk between seed and pappus) absent, wings absent, fruit surface light brown or straw, smooth (except at cellular level), with glands or glandular hairs, rarely no hairs (glabrous), thickened margin absent, longitudinal ribs present, 4-5, their surfaces smooth, with glands or glandular hairs.
Pappus absent.
Ecology
Often mat-forming, perennial herb, seeds without specific dispersal syndrome, but plant fragments and seeds can be dispersed by water. Wet tropical to warm-temperate regions. Widely cultivated as an ornamental, weed of watercourses, lakes, dams, channels and wetlands.
Native range
Brazil, Bolivia, Peru, Argentina, Paraguay and Uruguay.
Introduced range
Japan, Taiwan, eastern Australia, New Zealand.
