PLAINS IRONWEED
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| File Size: 265 KB |
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Vernonia marginata (Torr. ) Raf.
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| Grant County, Kansas (Marion McGlohon photo) |
| Perennial |
| Height: 12-30 inches |
| Family: Asteraceae – Sunflower or Composite Family |
| Flowering Period: July, August |
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| Stems: | | Erect, finely pubescent above, nearly glabrous below, branched above. | | Leaves: | | Alternate, mostly cauline, numerous, evenly distributed; blades narrowly lanceolate to linear-lanceolate, 2 to 6 inches long, 1/10 to 1/2 inch wide, mostly glabrous, upper surface scabrous along veins, lower surface deeply pitted and dotted. | | Inflorescences: | | Heads in compact, corymb-like arrays. Involucres narrowly bell-shaped, 1/8 to 1/2 inch tall. Phyllaries 35-40, overlapping in several series, greenish-purple, tips acuminate. | | Flowers: | | Ray florets absent; disk florets 10-25+, reddish-purple, ca. 1/2 inch long. | | Fruits: | | Achenes, pale brown to gray, elongate-ellipsoid, ribbed, glabrous; pappus of purplish to brownish-purple scales and bristles in 2 series, outer scales very short, inner bristles 1/8 to 1/4 inch long. | | Habitat: | | Stream edges, ditches, pastures | | Distribution: | | Meade, Morton, Seward, and Stevens Counties in Kansas | | Origin: | | Native |
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| Plains ironweed |  | | 310 KB | | Grant County, Kansas (Marion McGlohon photo) |
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