CIRSIUM

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Only three genera in Cynareae are represented by native species in the New World, and of these Cirsium is by far the most widely distributed and diverse. Native species of Cirsium range from sea level to alpine and from boreal regions of Canada to the tropics of Central America. Members of the genus occur in a myriad of habitats including swamps, meadows, forests, prairies, sand dunes, and deserts.

Facts about "CIRSIUM"
apex architecturetwisted +
apex architecture or shapespineless +
apex orientationerect +
apex prominence or shapeflat +
apex shapeentire + and dentate +
appendage shapelinear-oblong +
array architectureracemiform +, spiciform +, subcapitate +, paniculiform + and corymbiform +
base fusiondistinct +
base orientationappressed +
base shapeshort-tailed +
bract architectureleaflike +
bract sizereduced +
bristle architecture or shapeplumose +
bristle colorationtawny + and white +
bristle countmany +
bristle lengthlonger +
bristle shapeflattened +
chromosome count17 +
corolla arrangementbilateral +
corolla colorationwhite +, pink +, red +, yellow + and purple +
cypsela architecture or external texture or reliefsmooth +
cypsela architecture or shaperibbed +
cypsela external textureglabrous +
cypsela shapeovoid + and compressed +
face architectureeglandular +
face colorationgreen +
face external textureglabrous + and gray-canescent +
gland shapeelongate +
head architecture or shapediscoid +
head arrangementsingly +
head positionterminal +
head shapecylindric +, ovoid + and spheric +
leaf positionbasal + and cauline +
leaf shapebristly-dentate +, dentate + and lobed +
lobe arrangement or shapelinear +
material conditionfresh +
node shapeswollen +
pappus architecture or shapeplumose +
pappus behaviourfalling +
pappus durationpersistent +
phyllary countmany +
phyllary orientationspreading + and erect +
phyllary positionouter +, middle + and innermost +
phyllary shapespine-tipped +
phyllary sizesubequal +
portion colorationmilky +, brown + and black +
portion fusiondistinct +
portion height or lengthshort +
portion lengthlong +
portion shapecylindric +
receptacle architectureepaleate +
receptacle shapeflat + and convex +
scale colorationtawny + and white +
scale shapesetiform +
scar shapeangled +
species countmany +
stem architecturebranched +, simple + and spiny-winged +
stem orientationerect +
throat height or lengthshort +
throat shapecylindric +
throat sizeexpanded +
tip shapeelongate +
tooth shapebristly-tipped +
tube shapebent +
tube sizeslender +
whole organism life styleannual +, biennial + and perennial +