Flora of North America species comparison

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Juniperus monosperma

one-seed juniper, sabina
Habit Shrubs or trees dioecious, to 7(–12) m, usually branching near base; crown rounded to flattened-globose.
Bark

gray to brown, exfoliating in thin strips, that of small branchlets (5–10 mm diam.) smooth, that of larger branchlets exfoliating in either flakes or in strips.
Branches

ascending to erect;

branchlets erect, 4–6-sided, ca. 2/3 as wide as length of scalelike leaves.
Leaves

green to dark green, abaxial glands elongate, fewer than 1/5 of glands (on whip leaves) with an evident white crystalline exudate, margins denticulate (at 20x);

whip leaves 4–6 mm, glaucous adaxially; scalelike leaves 1–3 mm, not overlapping, or if so, by less than 1/4 their length, keeled, apex acute to acuminate, spreading.
Seed(s)

cones maturing in 1 year, of 1 size, with straight peduncles, globose to ovoid, 6–8 mm, reddish blue to brownish blue, glaucous, fleshy and resinous, with 1(–3) seeds.

Juniperus monosperma
Habitat Dry, rocky soils and slopes
Elevation 1000–2300 m (3300–7500 ft)
Distribution
from FNA
AZ; CO; NM; OK; TX
[WildflowerSearch map]
[BONAP county map]
Discussion

Reports of hybridization with J. pinchotii have been refuted by use of numerous chemical and morphologic characters (R. P. Adams 1975); the two species have nonoverlapping pollination seasons.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 2.
Parent taxa Cupressaceae > Juniperus > sect. Sabina
Sibling taxa
J. ashei, J. californica, J. coahuilensis, J. communis, J. deppeana, J. flaccida, J. horizontalis, J. occidentalis, J. osteosperma, J. pinchotii, J. scopulorum, J. virginiana
Synonyms J. occidentalis var. monosperma
Name authority (Engelmann) Sargent: Silva 10: 89. (1896)
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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