References

For Spiraea

Kalkman. 2004. In Kubitzki, K., ed. 2004. The families and genera of vascular plants. VI. Flowering plants – Dicotyledons – Celastrales, Oxalidales, Rosales, Cornales, Ericales. Springer, Berlin. 489 pp. Google Scholar

Lis, R.A. 2014. Spiraea. Pp. 398-411. In Flora of North America Editorial Committee. 2014. Flora of North America north of Mexico. Volume 9, Magnoliophyta: Picramniaceae to Rosaceae. Oxford Univ. Press, New York, NY. 713 pp. Google Scholar

Mink, J.N., J.R. Singhurst, and W.C. Holmes. 2011b. Discovery of Spiraea hypericifolia (Rosaceae) naturalized in Texas. Phytoneuron 2011-63: 1-2. Google Scholar

Rehder, A. 1940. Manual of cultivated trees and shrubs hardy in North America exclusive of the subtropical and warmer temperate regions. Second edition, revised and enlarged. Macmillan Co., New York,1940. 996 pp. Google Scholar

Robertson, K.R. 1974. The genera of Rosaceae in the southeastern United States. J. Arnold Arb. 55: 303-332, 344-401, 611-662. Google Scholar

Uttal, L.J. 1974. The varieties of Spiraea betulifolia. Bull. Torrey Bot. Club 101: 35-36. Google Scholar