The Junipers are divided into several sections, though (particularly among the scale-leaved species) which species belong to which sections is still far from clear, with research still on-going. The needle-leaved species are an obvious monophyletic group though.
Juniperus sect. Juniperus: Needle-leaf junipers
Juniperus sect. Juniperus subsect. Juniperus: Cones with 3 separate seeds; needles with one stomatal band
Juniperus virginiana is a widespread North American species of juniper, known as Eastern Juniper or Eastern Redcedar (though it is unrelated to the cedars); the Lakota Native American name is Chansha, "redwood" or Hante'.
Further west, it is replaced by the related Juniperus scopulorum (Rocky Mountain Juniper), and to the southwest, Juniperus ashei (Ashe Juniper).
The pollen of Eastern Juniper is a known allergen, although not as potent as that of the related Juniperus ashei (Ashe Juniper) which sheds pollen a month earlier.
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