GAMOCHAETA

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Gamochaeta comprises about 50 species (A. L. Cabrera 1961; S. E. Freire and L. Iharlegui 1997) or about 80 species (Cabrera 1977+, part 10), all native to the Americas. Most are known only from South America; some apparently are native to Mexico and the flora area (G. L. Nesom 2004b). Some species are strongly weedy and have extended non-native ranges. Because of inconsistencies in the identification of those species, it has been difficult to evaluate the overall distributions of the widespread species.

Facts about "GAMOCHAETA"
array architecturecontinuous +, interrupted +, spiciform + and paniculiform +
base shapecuneate + and cordate +
blade shapelinear +, oblanceolate + and spatulate +
bristle architecturebarbellulate +
chromosome count7 +
corolla colorationyellow + and purplish +
corolla shapepurplish-tipped +
cypsela shapeoblong + and flattened +
face colorationwhite +, gray +, green + and grayish +
face external texturetomentose +, pannose-tomentose +, glabrescent +, glabrous +, arachnose + and subpannose +
face positionadaxial +
floret architecturepistillate +
floret countnumerous +
floret reproductionbisexual +
hair shapepapilliform +
head architecture or shapedisciform +
involucre shapecampanulate +
leaf architecturesessile +
leaf arrangementalternate +
leaf positionbasal + and cauline +
margin shapeentire + and sinuate +
pappus behaviourfalling +
phyllary architectureeglandular +
phyllary colorationbrownish +, stramineous +, purplish + and hyaline +
phyllary external texturechartaceous + and scarious +
phyllary reflectanceshiny +
phyllary sizeunequal +
receptacle architectureepaleate +
receptacle external textureglabrous +
receptacle prominence or shapeflat +
receptacle shapeconcave +
ring architecture or external texture or reliefsmooth +
series behaviourfalling +
series count1 +
series fusionconnate +
stem orientationerect + and decumbent-ascending +
whole organism life styleannual +, biennial + and perennial +
whole organism subrhizomatoustaprooted + and fibrous-rooted +