KRIGIA

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Krigia is diverse and limited to North America. On molecular evidence, it stands apart from other clades of Cichorieae and is best placed as a monotypic subtribe (J. Lee et al. 2003; Lee and B. G. Baldwin 2004). Early studies classified the pappose and epappose species as different genera. A unified view of the genus was taken by L. H. Shinners (1947), and this has been supported by recent morphologic and molecular studies (K. J. Kim and T. J. Mabry 1991; Kim and B. L. Turner 1992; Kim et al. 1992b, 1992c; Kim and R. K. Jansen 1994). The most common base number is x = 5, with lower and higher numbers having arisen through dysploidy, autoploidy, and both ancient and recent alloploidy (K. L. Chambers 1965, 2004; A. S. Tomb et al. 1978; C. C. Chinnappa 1981; Kim and Turner).

Facts about "KRIGIA"
apex architecture or shapebractlike +
apex positiondistal cauline +
apex shapeacute + and obtuse +
apex sizereduced +
blade shapelinear +, lanceolate +, oblanceolate + and spatulate +
bristle architecturebarbellulate +
calyculus count0 +
corolla colorationyellow + and orange +
cypsela colorationbrown +
cypsela shapecolumnar +, obconic +, barrel-shaped +, fusiform + and beaked +
face external textureglabrous +, glandular-villous + and glaucous +
head arrangementsingly +
involucre shapeturbinate + and campanulate +
leaf architecturepetiolate +
leaf positionbasal + and cauline +
margin shapeentire +, denticulate + and lobed +
nerve external textureglabrous +
pappus count0 +
pappus durationpersistent +
pappus fragilityfragile +
pappus fusiondistinct +
pappus positionouter + and inner +
peduncle architectureebracteate +
peduncle shapeinflated +
petiole architecturewinged +
phyllary external texture or internal textureherbaceous +
phyllary orientationreflexed +
phyllary shapelinear-lanceolate + and ovate +
phyllary variabilityequal +
receptacle architectureepaleate +
receptacle external textureglabrous +
receptacle reliefpitted +
receptacle shapeflat + and low-convex +
scale colorationyellowish + and brownish +
scale sizetiny +
series count2 +, 0 + and 1 +
stem architecturebranched +
stem external textureglabrous +, villous + and glandular-villous +
stem habitdecumbent +
stem orientationerect +
stem shapescapiform +
tuber shapeglobose +
whole organism architecturetaprooted + and fibrous-rooted +
whole organism life styleannual + and perennial +