References

For Oclemena

Brouillet, L. 2006f. Oclemena. In Flora of North America Editorial Committee. 2006b. Flora of North America north of Mexico. Volume 20, Magnoliophyta: Asteridae, part 6: Asteraceae, part 2. Oxford Univ. Press, New York, NY. 666 pp. Google Scholar

Brouillet, L., and J.-P. Simon. 1981. An ecogeographical analysis of the distribution of Aster acuminatus Michaux and A. nemoralis Aiton (Asteraceae: Astereae). Rhodora 83: 521-550. Google Scholar

Cronquist, A. 1980. Asteraceae, Volume I, Vascular flora of the Southeastern United States. University of North Carolina Press, Chapel Hill, N.C. Google Scholar

Nesom, G.L. 1994a. Subtribal classification of the Astereae (Asteraceae). Phytologia 76: 193-274. Google Scholar

Nesom, G.L. 1997a. Taxonomic adjustments in North American Aster sensu latissimo (Asteraceae: Astereae). Phytologia 82: 281-288. Google Scholar

Semple, J.C., and L. Brouillet. 2024. Pappus variation in North American asters. II. Ionactis and Oclemena (Asteraceae: Astereae). Phytoneuron 2024-87: 1-6. Published 18 December 2024. ISSN 2153 733X Google Scholar

Semple, J.C., S.B. Heard, and ChunSheng Xiang. 1996. The asters of Ontario (Compositae: Astereae): Diplactis Raf., Oclemena E.L. Greene, Doellingeria Nees and Aster L. (including Canadanthus Nesom, Symphyotrichum Nees, and Virgulus Raf.). Univ. of Waterloo Biology Series 38. Google Scholar