@article {Knauf:1977:0015-749X:33,
	author = "Knauf, T. A. and Bilan, M. V.",
	title = "Notes: Cotyledon and Primary Needle Variation in Loblolly Pine From Mesic and Xeric Seed Sources",
	journal = "Forest Science",
	volume = "23",
	number = "1",
	year = "1977",
	abstract = "Cotyledons and primary needles in loblolly pines (Pinus taeda L.) of Bastrop County, Texas, provenance have morphological modifications which should tend to conserve moisture during drought. Forest Sci. 23:33-36.",
	pages = "33-36",
	url = "http://www.ingentaconnect.com/content/saf/fs/1977/00000023/00000001/art00007",
	keyword = "Adaptations, drought resistance, needle morphology, provenance, Pinus taeda"
}