Difference between revisions of "Juniperus monosperma"

(Engelmann) Sargent

Silva 10: 89. 1896.

Common names: One-seed juniper sabina
Basionym: Juniperus occidentalis var. monosperma Engelmann
Treatment appears in FNA Volume 2.
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--><span class="statement" id="st-d0_s0" data-properties="shrub reproduction;shrub atypical some measurement;shrub some measurement;shrub architecture;tree reproduction;tree atypical some measurement;tree some measurement;tree architecture"><b>Shrubs </b>or trees dioecious, to 7 (–12) m, usually branching near base;</span> <span class="statement" id="st-d0_s1" data-properties="crown shape;crown shape;crown shape">crown rounded to flattened-globose.</span> <span class="statement" id="st-d0_s2" data-properties="bark coloration;bark coloration;bark coloration;bark relief;bark architecture or pubescence or relief;bark relief;strip width;branchlet size"><b>Bark </b>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.</span> <span class="statement" id="st-d0_s3" data-properties="branch orientation;branch orientation;branch orientation"><b>Branches </b>ascending to erect;</span> <span class="statement" id="st-d0_s4" data-properties="branchlet orientation;branchlet count;leaf shape">branchlets erect, 4–6-sided, ca. 2/3 as wide as length of scalelike leaves.</span> <span class="statement" id="st-d0_s5" data-properties="leaf coloration;leaf coloration;leaf coloration;abaxial gland shape;abaxial gland count;exudate prominence;exudate coloration"><b>Leaves </b>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 20×);</span> <span class="statement" id="st-d0_s6" data-properties="margin shape;margin some measurement;margin pubescence">whip leaves 4–6 mm, glaucous adaxially;</span> <span class="statement" id="st-d0_s7" data-properties="leaf shape;leaf some measurement;leaf arrangement;leaf shape;apex shape;apex shape;apex shape;apex orientation">scalelike leaves 1–3 mm, not overlapping, or if so, by less than 1/4 their length, keeled, apex acute to acuminate, spreading.</span> <span class="statement" id="st-d0_s8" data-properties="seed-cone life cycle;seed-cone shape;seed-cone shape;seed-cone shape;seed-cone distance;seed-cone coloration;seed-cone coloration;seed-cone coloration;seed-cone pubescence;seed-cone texture;seed-cone coating;year count;peduncle course;seed atypical count;seed count"><b>Seed-</b>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.</span> <span class="statement" id="st-d0_s9" data-properties="seed some measurement"><b>Seeds </b>4–5 mm.</span><!--
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--><span class="statement" id="st-undefined" data-properties=""><b>Shrubs </b>or trees dioecious, to 7(–12) m, usually branching near base; crown rounded to flattened-globose. <b>Bark</b> 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. <b>Branches</b> ascending to erect; branchlets erect, 4–6-sided, ca. 2/3 as wide as length of scalelike leaves. <b>Leaves</b> 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 20×); 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. <b>Seed</b> 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. <b>Seeds</b> 4–5 mm.</span><!--
  
 
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|publication year=1896
 
|publication year=1896
 
|special status=
 
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V2/V2_436.xml
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V2/V2_436.xml
 
|genus=Juniperus
 
|genus=Juniperus
 
|section=Juniperus sect. Sabina
 
|section=Juniperus sect. Sabina
 
|species=Juniperus monosperma
 
|species=Juniperus monosperma
|abaxial gland count=0;1/5
 
|abaxial gland shape=elongate
 
|apex orientation=spreading
 
|apex shape=acute;acuminate
 
|bark architecture or pubescence or relief=smooth
 
|bark coloration=gray;brown
 
|bark relief=exfoliating;exfoliating
 
|branch orientation=ascending;erect
 
|branchlet count=2/3
 
|branchlet orientation=erect
 
|branchlet size=small
 
|crown shape=rounded;flattened-globose
 
|exudate coloration=white crystalline
 
|exudate prominence=evident
 
|leaf arrangement=not overlapping
 
|leaf coloration=green;dark green
 
|leaf shape=keeled;scalelike;scalelike
 
|leaf some measurement=1mm;3mm
 
|margin pubescence=glaucous
 
|margin shape=denticulate
 
|margin some measurement=4mm;6mm
 
|peduncle course=straight
 
|seed atypical count=1;3
 
|seed count=1
 
|seed some measurement=4mm;5mm
 
|seed-cone coating=resinous
 
|seed-cone coloration=reddish blue;brownish blue
 
|seed-cone distance=6mm;8mm
 
|seed-cone life cycle=maturing
 
|seed-cone pubescence=glaucous
 
|seed-cone shape=globose;ovoid
 
|seed-cone texture=fleshy
 
|shrub architecture=branching
 
|shrub atypical some measurement=7m;12m
 
|shrub reproduction=dioecious
 
|shrub some measurement=0m;7m
 
|strip width=thin
 
|tree architecture=branching
 
|tree atypical some measurement=7m;12m
 
|tree reproduction=dioecious
 
|tree some measurement=0m;7m
 
|year count=1
 
 
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Revision as of 14:20, 27 July 2019

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 20×); 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 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. Seeds 4–5 mm.


Habitat: Dry, rocky soils and slopes
Elevation: 1000–2300 m

Distribution

V2 436-distribution-map.gif

Ariz., Colo., N.Mex., Okla., Tex.

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.

Selected References

None.

Lower Taxa

None.