 | This article needs additional citations for verification .(April 2016) |
| Orobanche ludoviciana | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Lamiales |
| Family: | Orobanchaceae |
| Genus: | Orobanche |
| Species: | O. ludoviciana |
| Binomial name | |
| Orobanche ludoviciana | |
| Synonyms | |
List
| |
Orobanche ludoviciana, the Louisiana broomrape [1] or prairie broom-rape, is a species of plant in the family Orobanchaceae. [2] It was first described and named by Thomas Nuttall in 1818. [3]
This species is parasitic on neighboring plants via its roots; common host species include gumweed and wormwoods, though some other Asteraceae are also used. [3] They grow from 1-3 dm often without branches. [3] Leaves are scales and numerous. The inflorescences are many-flowered spikes that occupy a half to a third of the shoot. Flowers sessile or with small up to 15mm pedicels for the lower flowers. Calyx subtended by 1 or 2 bracts, which are bilabiate. Corolla is 1.5-2.5 cm and often a violet-like color. 2n=24, 48, 72, 96. It typically grows in sandy soil. It grows throughout the central plains of North America and northwest into British Columbia and Oregon. [3] Found from June through August. [4] Listed as endangered in Wisconsin and threatened in Illinois and Indiana.