Flora of North America species comparison

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Juniperus pinchotii

Juniperus scopulorum

enebro de fruto rojo, Pinchot juniper, Pinchot's juniper, redberry juniper

Rocky Mountain juniper, Rocky Mountain redcedar, seaside juniper
Habit Shrubs or shrubby trees dioecious, to 6 m, usually multistemmed; crown flattened-globose to irregular. Trees dioecious, to 20 m, single-stemmed (rarely multistemmed); crown conic to occasionally rounded.
Bark

ashy gray to brown, exfoliating in long strips, that of small branchlets (5–10 mm diam.) smooth, that of larger branchlets exfoliating in strips or sometimes in flakes.

brown, exfoliating in thin strips, that of small branchlets (5–10 mm diam.) smooth, that of larger branchlets exfoliating in plates.
Branches

spreading to ascending;

branchlets erect, 3–4-sided in cross section, ca. 2/3 as wide as length of scalelike leaves.

spreading to ascending;

branchlets erect to flaccid, 3–4-sided in cross section, ca. 2/3 or less as wide as length of scalelike leaves.
Leaves

yellow-green, abaxial glands elliptic to elongate, many with an evident white crystalline exudate, margins denticulate (at 20x);

whip leaves 4–6 mm, not glaucous adaxially; scalelike leaves 1–2 mm, not overlapping or overlapping by not more than 1/5 their length, keeled, apex acute, spreading.

light to dark green but often glaucous blue or blue-gray, abaxial gland elliptic, conspicuous, exudate absent, margins entire (at 20x and 40x);

whip leaves 3–6 mm, not glaucous adaxially; scalelike leaves 1–3 mm, not overlapping to overlapping by not more than 1/5 their length, keeled to rounded, apex obtuse to acute, appressed or spreading.
Seed(s)

cones maturing in 1 year, of 1 size, with straight peduncles, globose to ovoid, 6–8(–10) mm, copper to copper-red, not glaucous, fleshy and sweet, not resinous, with 1(–2) seeds.

cones maturing in 2 years, of 2 distinct sizes, generally with straight peduncles, globose to 2-lobed, 6–9 mm, appearing light blue when heavily glaucous, but dark blue-black beneath glaucous coating when mature (or tan beneath glaucous coating when immature), resinous to fibrous, with (1–)2(–3) seeds.
2n

= 22.

Juniperus pinchotii

Juniperus scopulorum
Habitat Gravelly soils on rolling hills and in ravines, limestone, gypsum Rocky soils, slopes, and eroded hillsides
Elevation 300–1000(–1700) m (1000–3300(–5600) ft) 1200–2700 m (0 m at Vancouver Island and Puget Sound) (3900–8900 ft (0 ft at Vancouver Island and Puget Sound))
Distribution
from FNA
NM; OK; TX; Mexico
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; CO; ID; MT; ND; NE; NM; NV; OR; SD; UT; WA; WY; AB; BC; n Mexico
[WildflowerSearch map]
[BONAP county map]
Discussion

Pinchot juniper hybridizes with Juniperus coahuilensis (R. P. Adams and J. R. Kistler 1991) but not with J. ashei (R. P. Adams 1977) or J. monosperma (R. P. Adams 1975). The type specimen of J. erythrocarpa is merely an individual with brighter red seed cones.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Juniperus scopulorum hybridizes with its eastern relative J. virginiana in zones of contact in the Missouri River basin (C. W. Comer et al. 1982) and with J. horizontalis (J. × fassettii Boivin; N. C. Fassett 1945). Relictual hybridization with J. virginiana is known in the Texas panhandle (R. P. Adams 1983).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 2. FNA vol. 2.
Parent taxa Cupressaceae > Juniperus > sect. Sabina Cupressaceae > Juniperus > sect. Sabina
Sibling taxa
J. ashei, J. californica, J. coahuilensis, J. communis, J. deppeana, J. flaccida, J. horizontalis, J. monosperma, J. occidentalis, J. osteosperma, J. scopulorum, J. virginiana
J. ashei, J. californica, J. coahuilensis, J. communis, J. deppeana, J. flaccida, J. horizontalis, J. monosperma, J. occidentalis, J. osteosperma, J. pinchotii, J. virginiana
Synonyms J. erythrocarpa Sabina scopulorum
Name authority Sudworth: Forest. Irrig. 10: 204. (1905) Sargent: Gard. & Forest 10: 420, fig. 54. (1897)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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