Johnsongrass
| Plant Profile | |
|---|---|
| FYUSE 3d Image |
Common Name: Johnsongrass Species Name: Sorghum halepense Plant Type: Grasses & Grass-like Family Name: Poaceae |
Examples of JohnsongrassSorghum halepense
| Plant Facts | |
|---|---|
| Origin | Introduced, Mediterranean region |
| Duration | Perennial |
| Season | Warm |
| Distribution in the U.S. | NE, KS, OK, TX, IA, MO, CO, NM |
| Distribution in Oklahoma | Throughout the state |
ID Characteristics
- Field Identification Characteristics
- Inflorescence: Panicle open (15-50 centimeters long), often purplish, branches whorled
- Spikelet: Florets 2; in pairs, sessile spikelet fertile (4-5.5 millimeters long); pedicellate spikelet staminate or neuter (5-7 millimeters long); lemmas of fertile spikelets thin and hylaline, first fertile, nerves 2; second sterile, nerves 3-7
- Awns: Fertile lemma awnless or awned (7-20 millimeters long), awn geniculate and twisted
- Glumes: Sessile spikelet glumes subequal (3.5-5.5 millimeters long), indurate, shiny, nerves obscure pedicellate spikelet glumes subequal (3.6-5.6 millimeters long) nerves 5-9
- Leaf and Stem Characteristics
- Sheath: Shaggy, densely hairy with long hairs
- Leaf Blade Shape: Flat (7-20 centimeters long, 1-7 millimeters wide), densely hairy or velvety, midvein prominent
- Ligule: Membranous (less than 2 millimeters long), rounded
- Floral Characteristics
- Inflorescence Type: Panicle
- Florets Per Spikelet: 2
- Glumes: Equal
| Habitat/Ecology | |
|---|---|
| Soil Type | Various, best growth in moist silty soil |
| Habitat | Widespread on disturbed sites, waste areas, cropland and rangeland in low condition |
| Successional Stage | Early, but invades all stages |
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