Woody Plants Wildland Plant Identification Rangeland Ecology & - - PDF document

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Woody Plants Wildland Plant Identification Rangeland Ecology & - - PDF document

Wildland Plant Identification Woody Plants Wildland Plant Identification Rangeland Ecology & Management 351 7 Common Woody Plants Family Genus species Common Name Character BETULACEAE Alnus incana Mountain Alder (Per / Nat)


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Wildland Plant Identification REM 351 University of Idaho 1

Woody Plants

Wildland Plant Identification

Rangeland Ecology & Management 351

7 Common Woody Plants

Family Genus species Common Name Character BETULACEAE Alnus incana Mountain Alder (Per / Nat) EPHEDRACEAE Ephedra trifurca Morman Tea (Per / Nat) FABACEAE Acacia greggii Catclaw Acacia (Per / Nat) FABACEAE Prosopis glandulosa Honey Mesquite (Per / Nat) FAGACEAE Quercus gambelii Gambel Oak (Per / Nat) ROSACEAE Adenostoma fasciculatum Chamise (Per / Nat) ZYGOPHYLLACEAE Larrea tridentata Creosotebush (Per / Nat)

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Wildland Plant Identification REM 351 University of Idaho 2

Alnus incana

  • Gray, smooth bark
  • Often with multiple stems

BETULACEAE

Mountain Alder

Alnus incana

  • Leaves ovate (heartshaped) with

prominent veins & abruptly pointed, sharply double toothed

  • Mature catkins are oval, dark

brown, woody, & persitent

BETULACEAE

Mountain Alder

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Wildland Plant Identification REM 351 University of Idaho 3

Ephedra trifurca

– Shrub – up to 6 ft. tall – Branches whorled at nodes or solitary

EPHEDRACEAE

Mormon Tea or

Longleaf Jointfir

– Does not have traditional leaves – Produces cones – Leaves

  • Whorled in

groups of three – Jointed stem

Ephedra trifurca EPHEDRACEAE

Mormon Tea or

Longleaf Jointfir

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Wildland Plant Identification REM 351 University of Idaho 4

Acacia greggii

– Shrub or small tree – 3-6 ft. tall – Forms thickets – Spines on Branches

FABACEAE

Catclaw Acacia

– Leaves alternate

  • Even-bipinnately

compound – Flowers creamy- white – Produces flat, curved legumes

Acacia greggii FABACEAE

Catclaw Acacia

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Wildland Plant Identification REM 351 University of Idaho 5

Prosopis glandulosa

– Shrub or small tree – 20 ft. tall – Inflorescences greenish-yellow to creamy yellow

Honey Mesquite

FABACEAE

  • Fruits are pods
  • Long and straight
  • r slightly curved
  • Leaves
  • Alternate
  • Even
  • bipinnately
  • Compound

Prosopis glandulosa

Honey Mesquite

FABACEAE

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Wildland Plant Identification REM 351 University of Idaho 6

Quercus gambelii

Gambel Oak

FAGACEAE

  • Bark is light gray to

white (other Quercus barks are darker)

Quercus gambelii

Gambel Oak

FAGACEAE

  • Deeply 5-9 lobed (Q. stellata

3-5 lobed), oval outline

  • Acorn cup encloses ¼ to 1/3
  • f the nut
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Wildland Plant Identification REM 351 University of Idaho 7

Adenostoma fasciculatum

  • Some branches may taper to

spine-like points, lenticels on bark

  • Bark is red, becoming shreddy

with age; plant is evergreen

Chamise

ROSACEAE Adenostoma fasciculatum

– Leaves of seedlings are lobed & divided – Leaves fascicled, awl- or club- shaped, glabrous, resinous

Chamise

ROSACEAE

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Wildland Plant Identification REM 351 University of Idaho 8

Larrea tridentata

– Shrub – 9 ft. tall – No well defined trunk – Reproduces via rhizomes and seeds

Creosotebush

ZYGOPHYLLACEAE

– Twigs slender with brown nodes – Foliage emits creosote odor, particularly when wet or burned – Leaves

  • Opposite
  • Bifoliate
  • Glossy

Larrea tridentata

Creosotebush

ZYGOPHYLLACEAE