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| − | --><span class="statement" id="st-d0_s0" data-properties="tree some measurement"><b>Trees,</b> to 35 m;</span> <span class="statement" id="st-d0_s1" data-properties="trunk quantity;crown orientation;crown architecture">trunks often several, crowns spreading, open.</span> <span class="statement" id="st-d0_s2" data-properties="bark coloration;bark architecture or pubescence or relief;bark coloration"><b>Bark </b>light gray, smooth, becoming darker and breaking into scales in age;</span> <span class="statement" id="st-d0_s3" data-properties="lenticel prominence">lenticels inconspicuous.</span> <span class="statement" id="st-d0_s4" data-properties="bud season;bud architecture;bud shape;bud shape;bud shape;bud some measurement;apex shape"><b>Winter </b>buds stipitate, ellipsoid to obovoid, 3–9 mm, apex rounded;</span> <span class="statement" id="st-d0_s5" data-properties="stalk some measurement">stalks 3–5 mm;</span> <span class="statement" id="st-d0_s6" data-properties="scale quantity;scale variability;scale arrangement or dehiscence;scale coating">scales 2, equal, valvate, sometimes incompletely covering underlying leaves, moderately to heavily resin-coated.</span> <span class="statement" id="st-d0_s7" data-properties="leaf-blade shape;leaf-blade shape;leaf-blade shape;leaf-blade shape;leaf-blade length;leaf-blade width;base shape;base shape;base shape;margin prominence or shape;margin architecture or shape;margin architecture or shape;margin shape;secondary tooth size;apex shape;apex shape;apex shape;apex shape"><b>Leaf-</b>blade narrowly elliptic to rhombic, rarely ovate, 4–9 × 2–5 cm, base cuneate to rounded, margins flat, finely serrate or serrulate, sometimes slightly lobed, without noticeably larger secondary teeth, apex acute or obtuse to rounded;</span> <span class="statement" id="st-d0_s8" data-properties="surface pubescence;surface pubescence;surface pubescence">surfaces abaxially sparsely pubescent to villous.</span> <span class="statement" id="st-d0_s9" data-properties="inflorescence prominence"><b>Inflorescences </b>formed season before flowering and exposed during winter;</span> <span class="statement" id="st-d0_s10" data-properties="catkin architecture;catkin some measurement;stamen quantity;stamen quantity;stamen quantity;stamen size">staminate catkins in 1 or more clusters of 3–7, 3–10 cm, stamens 2, or 4 with 2 reduced in size;</span> <span class="statement" id="st-d0_s11" data-properties="">pistillate catkins in 1 or more clusters of 2–6.</span> <span class="statement" id="st-d0_s12" data-properties="catkin architecture;catkin life cycle;growth life cycle"><b>Flowering </b>before new growth in spring.</span> <span class="statement" id="st-d0_s13" data-properties="infructescence shape;infructescence shape;infructescence shape;infructescence length;infructescence width"><b>Infructescences </b>ovoid to nearly cylindric, 1–2.2 × 0.7–1 cm;</span> <span class="statement" id="st-d0_s14" data-properties="peduncle some measurement">peduncles 1–10 mm.</span> <span class="statement" id="st-d0_s15" data-properties="samara arrangement or shape;wing width;wing shape;wing texture"><b>Samaras </b>broadly elliptic, wings narrower than body, irregular in shape, leathery.</span><!-- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Trees,</b> to 35 m; trunks often several, crowns spreading, open. <b>Bark</b> light gray, smooth, becoming darker and breaking into scales in age; lenticels inconspicuous. <b>Winter</b> buds stipitate, ellipsoid to obovoid, 3–9 mm, apex rounded; stalks 3–5 mm; scales 2, equal, valvate, sometimes incompletely covering underlying leaves, moderately to heavily resin-coated. <b>Leaf</b> blade narrowly elliptic to rhombic, rarely ovate, 4–9 × 2–5 cm, base cuneate to rounded, margins flat, finely serrate or serrulate, sometimes slightly lobed, without noticeably larger secondary teeth, apex acute or obtuse to rounded; surfaces abaxially sparsely pubescent to villous. <b>Inflorescences</b> formed season before flowering and exposed during winter; staminate catkins in 1 or more clusters of 3–7, 3–10 cm, stamens 2, or 4 with 2 reduced in size; pistillate catkins in 1 or more clusters of 2–6. <b>Flowering</b> before new growth in spring. <b>Infructescences</b> ovoid to nearly cylindric, 1–2.2 × 0.7–1 cm; peduncles 1–10 mm. <b>Samaras</b> broadly elliptic, wings narrower than body, irregular in shape, leathery.</span><!-- |
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| | |publication year=1842 | | |publication year=1842 |
| | |special status=Endemic | | |special status=Endemic |
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V3/V3_456.xml | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V3/V3_456.xml |
| | |subfamily=Betulaceae subfam. Betuloideae | | |subfamily=Betulaceae subfam. Betuloideae |
| | |genus=Alnus | | |genus=Alnus |
| | |species=Alnus rhombifolia | | |species=Alnus rhombifolia |
| − | |apex shape=obtuse;rounded
| |
| − | |bark architecture or pubescence or relief=smooth
| |
| − | |bark coloration=darker;light gray
| |
| − | |base shape=cuneate;rounded
| |
| − | |bud architecture=stipitate
| |
| − | |bud season=winter
| |
| − | |bud shape=ellipsoid;obovoid
| |
| − | |bud some measurement=3mm;9mm
| |
| − | |catkin architecture=pistillate;staminate
| |
| − | |catkin life cycle=flowering
| |
| − | |catkin some measurement=3cm;10cm
| |
| − | |crown architecture=open
| |
| − | |crown orientation=spreading
| |
| − | |growth life cycle=new
| |
| − | |inflorescence prominence=exposed
| |
| − | |infructescence length=1cm;2.2cm
| |
| − | |infructescence shape=ovoid;nearly cylindric
| |
| − | |infructescence width=0.7cm;1cm
| |
| − | |leaf-blade length=4cm;9cm
| |
| − | |leaf-blade shape=ovate;narrowly elliptic;rhombic
| |
| − | |leaf-blade width=2cm;5cm
| |
| − | |lenticel prominence=inconspicuous
| |
| − | |margin architecture or shape=serrulate;serrate
| |
| − | |margin prominence or shape=flat
| |
| − | |margin shape=lobed
| |
| − | |peduncle some measurement=1mm;10mm
| |
| − | |samara arrangement or shape=elliptic
| |
| − | |scale arrangement or dehiscence=valvate
| |
| − | |scale coating=resin-coated
| |
| − | |scale quantity=2
| |
| − | |scale variability=equal
| |
| − | |secondary tooth size=larger
| |
| − | |stalk some measurement=3mm;5mm
| |
| − | |stamen quantity=2;4;2
| |
| − | |stamen size=reduced
| |
| − | |surface pubescence=abaxially sparsely pubescent;villous
| |
| − | |tree some measurement=0m;35m
| |
| − | |trunk quantity=several
| |
| − | |wing shape=irregular
| |
| − | |wing texture=leathery
| |
| − | |wing width=narrower
| |
| | }}<!-- | | }}<!-- |
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| | -->[[Category:Treatment]][[Category:Alnus]] | | -->[[Category:Treatment]][[Category:Alnus]] |
Trees, to 35 m; trunks often several, crowns spreading, open. Bark light gray, smooth, becoming darker and breaking into scales in age; lenticels inconspicuous. Winter buds stipitate, ellipsoid to obovoid, 3–9 mm, apex rounded; stalks 3–5 mm; scales 2, equal, valvate, sometimes incompletely covering underlying leaves, moderately to heavily resin-coated. Leaf blade narrowly elliptic to rhombic, rarely ovate, 4–9 × 2–5 cm, base cuneate to rounded, margins flat, finely serrate or serrulate, sometimes slightly lobed, without noticeably larger secondary teeth, apex acute or obtuse to rounded; surfaces abaxially sparsely pubescent to villous. Inflorescences formed season before flowering and exposed during winter; staminate catkins in 1 or more clusters of 3–7, 3–10 cm, stamens 2, or 4 with 2 reduced in size; pistillate catkins in 1 or more clusters of 2–6. Flowering before new growth in spring. Infructescences ovoid to nearly cylindric, 1–2.2 × 0.7–1 cm; peduncles 1–10 mm. Samaras broadly elliptic, wings narrower than body, irregular in shape, leathery.
Phenology: Flowering early spring.
Habitat: Open, rocky stream banks and adjacent (often rather dry) slopes
Elevation: 100–2400 m
Distribution
Calif., Idaho, Mont., Oreg., Wash.
Discussion
Alnus rhombifolia is the common alder throughout the dry Mediterranean climatic zone of coastal western United States. Mexican populations are not known, but because A. rhombifolia has been collected as far south as San Diego, California, it should be expected in adjacent Baja California.
Native Americans used various parts of Alnus rhombifolia medicinally for diarrhea, consumption, and burns, as a blood purifier, an emetic, and a wash for babies with skin diseases, and to facilitate childbirth (D. E. Moerman 1986).
Selected References
None.
