Orobanche ludoviciana

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Lamiids
Ordo: Lamiales

Familia: Orobanchaceae
Tribus: Orobancheae
Genus: Orobanche
Species: Orobanche ludoviciana
Name

Orobanche ludoviciana Nutt.
References

Gen. N. Amer. pl. 2:58. 1818
USDA, ARS, Germplasm Resources Information Network. Orobanche ludoviciana in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 09-Oct-10.
Integrated Taxonomic Information System online database ITIS TSN:34291

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.
References

USDA, NRCS (n.d.). "Orobanche ludoviciana". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 26 April 2016.
Adam C. Schneider (9 December 2016). "Resurrection of the genus Aphyllon for New World broomrapes (Orobanche s.l., Orobanchaceae)". PhytoKeys. 75 (75): 107–118. doi:10.3897/PHYTOKEYS.75.10473. ISSN 1314-2003. PMC 5234541. PMID 28127248. Wikidata Q28937351.
Collins, L. Turner, Alison E.L. Cromwell & George Yatskievych. 2019. Orobanche ludovicana In Flora of North America, vol. 17. Magnoliophyta: Tetrachondraceae to Orobanchaceae. Flora of North America Editorial Committee, eds. p. 481.
Gleason & Cronquist (1991). Manual of Vascular Plants of Northeastern United States and Adjacent Canada. The New York Botanical Garden.