BROOMWEED
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File Size: 100 KB |
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Gutierrezia dracunculoides DC.
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[=Amphiachyris dracunculoides (DC. ) Nutt.] |
Konza Prairie, Riley County, Kansas |
Annual |
Height: 1-3 feet |
Family: Asteraceae - Sunflower Family |
Flowering Period: August, September,October |
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Stems: | | Solitary, 1/5 to 4/5 in diameter, upper 1/2 of stem bushy-branched. | Leaves: | | Alternate, numerous, linear or linear-lanceolate, .2 to 2.4 inches long, less than 1/4 inch wide, margins entire, glandular-dotted or somewhat sticky. | Inflorescences: | | Corymbs of numerous heads, terminal. | Flowers: | | Involucre 1/8 to 1/5 inch tall; involucral bracts overlapping, shiny; ray florets 6-10, ligule 1/6 to 1/4 inch long, yellow; disk florets 10-25, corolla yellow, staminate only, infertile. | Fruits: | | Ray achenes less than 1/12 inch long, purplish-black with 7-9 narrow greenish stripes, finely pubescent, pappus absent or a minute crown; disk achenes sterile, pappus of 5 or more awns united basally. | Habitat: | | Open upland sites, disturbed or overgrazed areas and roadsides; dry, calcareous, clay or sandy soils. | Distribution: | | Occurs primarily in southern and central Kansas. | Toxicity: | | Known to cause eye inflamation in humans and livestock. | Uses: | | Pioneers tied bundles of dried plants to sticks for use as brooms. This weedy plant spreads rapidly in overgrazed areas, because it is unpalatable to livestock and withstands drought well. | Comments: | | Large populations are sometimes found in overgrazed pastures. |
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Broomweed | ![](thumbnails/broomweed9.jpg) | 97 KB | Konza Prairie, Riley County, Kansas |
| Broomweed | ![](thumbnails/broomweed11.jpg) | 188 KB | Konza Prairie, Riley County, Kansas |
| Broomweed | ![](thumbnails/broomweed6.jpg) | 103 KB | Greenwood County, Kansas |
| Broomweed | ![](thumbnails/broomweed8.jpg) | 157 KB | Greenwood County, Kansas |
| Broomweed | ![](thumbnails/broomweed7.jpg) | 153 KB | Greenwood County, Kansas |
| Broomweed | ![](thumbnails/broomweed4.jpg) | 73 KB | Tallgrass Prairie National Preserve, Chase County, Kansas |
| Broomweed | ![](thumbnails/broomweed101.jpg) | 72 KB | Cowley County, Kansas |
| Broomweed | ![](thumbnails/broomweed111.jpg) | 135 KB | Cowley County, Kansas |
| Broomweed heads | ![](thumbnails/broomweed20.jpg) | 62 KB | Bourbon County, Kansas |
| Broomweed habit | ![](thumbnails/broomweed21.jpg) | 164 KB | Bourbon County, Kansas |
| Broomweed habit | ![](thumbnails/broomweed23.jpg) | 179 KB | Bourbon County, Kansas |
| Broomweed | ![](thumbnails/broomweed16.jpg) | 92 KB | Riley County, Kansas |
| Broomweed | ![](thumbnails/broomweed30.jpg) | 95 KB | Chase County, Kansas |
| Broomweed inflorescence | ![](thumbnails/Gutierrezia_dracunculoides.jpg) | 235 KB | Tallgrass Prairie National Preserve, Chase County, Kansas |
| Broomweed flowers | ![](thumbnails/Gutierrezia_dracunculoides3.jpg) | 114 KB | Tallgrass Prairie National Preserve, Chase County, Kansas |
| Broomweed habit | ![](thumbnails/Gutierrezia_dracunculoides4.jpg) | 206 KB | Tallgrass Prairie National Preserve, Chase County, Kansas |
| Broomweed habit | ![](thumbnails/Gutierrezia_dracunculoides5.jpg) | 218 KB | Tallgrass Prairie National Preserve, Chase County, Kansas |
| Broomweed habit | ![](thumbnails/Gutierrezia_dracunculoides7.jpg) | 210 KB | Tallgrass Prairie National Preserve, Chase County, Kansas |
| Broomweed habit | ![](thumbnails/Gutierrezia_dracunculoides9.jpg) | 180 KB | Tallgrass Prairie National Preserve, Chase County, Kansas |
| Broomweed bark | ![](thumbnails/Gutierrezia_dracunculoides_bark2.jpg) | 92 KB | Tallgrass Prairie National Preserve, Chase County, Kansas |
| Broomweed in winter | ![](thumbnails/broomweed_winter.jpg) | 148 KB | Tallgrass Prairie National Preserve, Chase County, Kansas |
| Broomweed in winter | ![](thumbnails/broomweed_winter2.jpg) | 154 KB | Tallgrass Prairie National Preserve, Chase County, Kansas |
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