Juniperus pinchotii

Juniperus pinchotii, commonly known as Pinchot juniper or redberry juniper, is a species of juniper native to south-western North America, in Mexico: Nuevo León and Coahuila, and in the United States: south-eastern New Mexico, central Texas, and western Oklahoma.

Juniperus pinchotii

Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Division: Pinophyta
Class: Pinopsida
Order: Pinales
Family: Cupressaceae
Genus: Juniperus
Species:
J. pinchotii
Binomial name
Juniperus pinchotii
Natural range
Synonyms
  • Juniperus erythrocarpa Cory
  • Juniperus texensis van Melle

It grows at 600–2,100 m altitude.[2][3]

Description

Juniperus pinchotii is an evergreen coniferous shrub or small tree growing to 1–6 m tall, usually multistemmed, and with a dense, rounded crown. The bark is pale gray, exfoliating in thin longitudinal strips, exposing orange brown underneath. The ultimate shoots are 1.1–1.8 mm thick. The leaves are scale-like, 1–2 mm long and 0.5–1.5 mm broad on small shoots, up to 12 mm long on vigorous shoots; they are arranged in alternating whorls of three or opposite pairs. The juvenile leaves, produced on young seedlings only, are needle-like.

The cones are berry-like, with soft resinous flesh, subglobose to ovoid, 5–8 mm (rarely 10 mm) long, orange-red, often with a pale pink waxy bloom, and contain one or two seeds; they are mature in about 12 months from pollination. The male cones are 3–4 mm long, and shed their pollen in fall. It is usually dioecious, with male and female cones on separate plants, but occasional monoecious plants can be found.[2][3]

Hybrids

Hybrids with Juniperus coahuilensis are known.[3] They have also occasionally been reported with Juniperus monosperma, but never verified; all claimed hybrids tested have proven not to be. These two are unable to hybridize in nature, being isolated by pollination time (fall in J. pinchotii, late winter in J. monosperma).[3]

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References
  1. Farjon, A. (2017). "Juniperus pinchotii". IUCN Red List of Threatened Species. 2017: e.T42245A111581444. doi:10.2305/IUCN.UK.2017-1.RLTS.T42245A111581444.en.
  2. Farjon, A. (2005). Monograph of Cupressaceae and Sciadopitys. Royal Botanic Gardens, Kew. ISBN 1-84246-068-4
  3. Adams, R. P. (2008). Junipers of the World, 2nd ed. Trafford. ISBN 1-4251-6879-5


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