Pterocaulon

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Campanulids
Ordo: Asterales

Familia: Asteraceae
Subfamilia: Asteroideae
Tribus: Inuleae
Subtribus: Plucheinae
Genus: Pterocaulon
Species: P. alopecuroides – P. angustifolium – P. balansae – P. brachyanthum – P. cabrerae – P. ciliosum – P. cordobense – P. discolor – P. globuliferus – P. intermedium – P. lanatum – P. lorentzii – P. niveum – P. paradoxum – P. polypterum – P. polystachyum – P. purpurascens – P. pycnostachyum – P. redolens – P. rugosum – P. serrulatum – P. sphacelatum – P. sphaeranthoides – P. tricholobum – P. verbascifolium – P. virgatum – P. xenicum
Name

Pterocaulon Elliott, Sketch Bot. S. Carolina [Elliott] 2: 323. (1823)

Type species: Pterocaulon pycnostachyum Elliott, Sketch Bot. S. Carolina [Elliott] 2: 324. (1823)

Synonyms

Heterotypic
Monenteles Labill., Sert. Austro-Caledon. 42, tt. 43, 44. (1825)
Chlaenobolus Cass., Dict. Sci. Nat., ed. 2. [F. Cuvier] 49: 337. (1827)
Pluchea subg. Chlaenobolus Cass., Dict. Sci. Nat. (ed. 2), 49: 337. (1827)

References

Elliott, S. 1823. A Sketch of the Botany of South-Carolina and Georgia 2: 323.
Hassler, M. 2018. Pterocaulon. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2018. Species 2000 & ITIS Catalogue of Life. Published online. Accessed: 2018 2018 Apr.22. Reference page.
International Plant Names Index. 2018. Pterocaulon. Published online. Accessed: Apr. 22 2018.
Monge, M., Volet, D.P., Anderberg, A.A. & Semir, J. 2017. Disentangling the identity of Pterocaulon rugosum and P. alopecuroides (Asteraceae, Inuleae), with a description of a new species. Nordic Journal of Botany. DOI: 10.1111/njb.01483 No hard copy as yet.
Tropicos.org 2018. Pterocaulon. Missouri Botanical Garden. Published online. Accessed: 22 Apr. 2018.

Pterocaulon is a genus of flowering plants in the sunflower family, native to North and South America and to Australasia.[2][3] Blackroot is a common name for species native to North America.[4]

The plants are perennial herbs, frequently densely covered with woolly hairs. The generic name means "winged stem," referring to the decurrent leaf bases that give the appearance of wings running down the sides of the stems.[5][6]

Species[1][7][8]

Pterocaulon alopecuroides - South America, Puerto Rico, Virgin Islands
Pterocaulon angustifolium - Brazil, Argentina, Paraguay, Uruguay
Pterocaulon balansae - Brazil, Argentina, Paraguay, Uruguay
Pterocaulon cordobense - Brazil, Argentina, Paraguay, Uruguay
Pterocaulon globuliflorus - Western Australia, Northern Territory
Pterocaulon lanatum - Brazil, Bolivia, Paraguay, Salta
Pterocaulon lorentzii - Brazil, Argentina, Paraguay, Uruguay, Bolivia
Pterocaulon niveum - Western Australia, Northern Territory
Pterocaulon polypterum - Brazil, Argentina, Uruguay
Pterocaulon polystachyum - Brazil, Argentina, Paraguay, Uruguay
Pterocaulon purpurascens - Mato Grosso, Argentina, Paraguay, Bolivia
Pterocaulon pycnostachyum - United States (AL GA FL SC NC)
Pterocaulon redolens - Indochina, Hainan, Orissa, Philippines, Maluku, New Guinea, eastern Australia
Pterocaulon rugosum - Brazil, Argentina, Paraguay
Pterocaulon serrulatum - Western Australia, Northern Territory, South Australia
Pterocaulon sphacelatum - Australia
Pterocaulon sphaeranthoides - Western Australia, Northern Territory, Queensland
Pterocaulon spicatum - South America
Pterocaulon verbascifolium - Western Australia, Northern Territory, Queensland
Pterocaulon virgatum - Central + South America, West Indies, United States (TX LA)

References

Flann, C (ed) 2009+ Global Compositae Checklist Archived 2014-11-30 at archive.today
Elliott, Stephen. Sketch of the Botany of South-Carolina and Georgia 2(4): 323–324. 1824 short descriptions in parallel English and Latin, longer descriptions in English
Tropicos, Pterocaulon Elliott
USDA, NRCS (n.d.). "Pterocaulon". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 15 October 2015.
Flora of North America v 21 p 476, Pterocaulon Elliott
Cabrera, A. L. and A. M. Ragonese. 1978. Revisión del género Pterocaulon (Compositae). Darwiniana 21: 185–257.
The Plant List search for Pterocaulon
Biota of North America Program 2013 county distribution maps