PLUCHEA

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As currently treated, Pluchea is a heterogeneous group of species, variable in habit (trees and shrubs to herbs) and foliar, floral, and fruit morphology. The American, primarily herbaceous, species are divided into groups (G. L. Nesom 1989): sect. Pluchea, sect. Amplectifolium G. L. Nesom, and sect. Pterocaulis G. L. Nesom. Among the woody species, segregate genera have been recognized (Tessaria Ruiz & Pavón, Berthelotia de Candolle, Eremohylema A. Nelson); boundaries among segregates have not been clearly drawn.

Facts about "PLUCHEA"
array architecturecorymbiform + and paniculiform +
array shapeflat-topped + and elongate +
base architectureclasping +
blade shapeelliptic +, lanceolate +, oblanceolate +, oblong +, obovate + and ovate +
bristle architecturebarbellate +
bristle fusiondistinct + and connate +
chromosome count10 +
corolla colorationwhite +, whitish +, yellowish +, pinkish +, lavender +, purplish + and rosy +
cypsela shapeoblong-cylindric +
face architecture or exudationsessile-glandular +
face external texturestrigillose + and glabrous +
floret architecturepistillate + and staminate +
floret positionperipheral + and inner +
floret reproductionfertile +
head architecture or shapedisciform +
involucre shapecampanulate +, cupulate +, cylindric +, hemispheric + and turbinate +
leaf architecturepetiolate + and sessile +
leaf arrangementalternate +
leaf positioncauline +
lobe count5 +
pappus behaviourfalling +
pappus durationpersistent +
phyllary behaviourfalling +
phyllary durationpersistent +
phyllary shapeovate +, lanceolate + and linear +
phyllary sizeunequal +
receptacle architectureepaleate +
receptacle prominence or shapeflat +
series count1 +
shrub architecturetaprooted + and fibrous-rooted +
shrub odorfetid-aromatic +
stem architecturesimple +, branched + and winged +
stem architecture or exudationstipitate-or-sessile-glandular +
stem external texturepuberulent +, tomentose + and glabrous +
stem orientationerect +
whole organism life styleannual + and perennial +