Rocky Mountain Maple Acer glabrum - Acer subserratum

Detailed Listing For
Botanical Name:

Acer glabrum

Family:

Sapindaceae

Genus:

Acer

Species:

glabrum

Common Name:

Rocky Mountain Maple

Height:
30 feet
Minimum Hardiness Zone:
4
Harvest hemisphere:
Northern

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  • Acer glabrum

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Growing Info, follow in order:
Scarification: Soak in water, let stand in water for 24 hours.
Stratification: warm stratify for 180 days, cold stratify for 180 days.
Germination: sow seed 1/4" deep, tamp the soil, mulch the seed bed.
In a Nutshell:
* A decidious Tree growing to 9 m.
* It is in flower in April, and the seeds ripen in September. more...
* Native to mountains from Alaska to California.
* Yellow fall color. more...
[ edit ] Description Acer glabrum is a small tree growing to 10 m tall, with a trunk up to 20–30 cm diameter. The leaves are 2–10 cm broad, three-lobed (rarely five-lobed), variable in the depth of lobing, occasionally so deeply lobed as to be divided into three leaflets; the lobes have an acute apex and a coarsely serrated margin. The flowers are produced in corymbs of five to ten, yellowish-green, at the same time as the new leaves in spring. The fruit is a samara or winged seed. These develop in pairs at an angle of less than 45° when mature. [ 2 ] [ 3 ] [ edit ] Varieties There are four to six varieties , some of them treated by some authors at the higher rank of subspecies : [ 1 ] [ 3 ] [ 4 ] Acer glabrum var. glabrum (syn. subsp. glabrum ; Rocky Mountain Maple )– Rocky Mountains, Montana to New Mexico Acer glabrum var. diffusum (Greene) Smiley (syn. subsp. diffusum (Greene) A.E.Murray; Rocky Mountain Maple ) – eastern California, Nevada, Utah Acer glabrum var. douglasii (Hook.) Dippel (syn. subsp. douglasii (Hook.) Wesm.; Douglas Maple ) – Alaska south to Washington and Idaho Acer glabrum var. greenei Keller ( Greene's Maple ) – endemic-central California Acer glabrum var. neomexicanum (Greene) Kearney & Peebles (syn. subsp. neomexicanum (Greene) A.E.Murray; New Mexico Maple ) – New Mexico Acer glabrum var. torreyi (Greene) Smiley (syn. subsp. torreyi (Greene) A.E.Murray; Torrey Maple ) – endemic - Northern California It is sometimes referred to as "rock maple", due to the extreme hardness of the wood, which often requires special cutting tools. [ citation needed ] Not to be confused with Acer saccharum, the Sugar Maple, which is also referred to as "Hard Maple" or "Rock Maple" or "Hard Rock Maple".
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Physical Characteristics  Acer glabrum is a deciduous Tree growing to 9 m (29ft 6in). It is hardy to zone 5. It is in flower in April, and the seeds ripen in September. The flowers are dioecious (individual flowers are either male or female, but only one sex is to be found on any one plant so both male and female plants must be grown if seed is required) and are pollinated by Insects. The plant prefers light (sandy), medium (loamy) and heavy (clay) soils, requires well-drained soil and can grow in heavy clay soil.The plant prefers acid, neutral and basic (alkaline) soils..It can grow in semi-shade (light woodland) or no shade.It requires moist soil.
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