Camel Thorn Alhagi psudalhagi - PowerPoint PPT Presentation

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Camel Thorn Alhagi psudalhagi

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4 ft tall, annual, biennial or short lived perennial. Spreads ... Small yellow flowers in flat topped clusters. Fruits, teardrop shape, hang down off the stem. ... – PowerPoint PPT presentation

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Title: Camel Thorn Alhagi psudalhagi


1
Camel ThornAlhagi psudalhagi
  • Spiny, creeping perennial. 1.5- 4 ft.
  • Deep penetrating horizontally spreading roots.
  • Stems covered with greenish spines.

2
Dyers WoadIsatis tinctoria
  • 4 ft tall, annual, biennial or short lived
    perennial.
  • Spreads only by seed.
  • Thick tap root, up to 5 ft. deep.

3
Dyers WoadIsatis tinctoria
  • Small yellow flowers in flat topped clusters.
  • Fruits, teardrop shape, hang down off the stem.
    Purple brown.

4
Diffuse KnapweedCentaurea diffusa
  • Growth 3 feet
  • Stem single, much branched, bushy.

5
DiffuseKnapweedCentaurea diffusa
  • Flowers white to pinkish.
  • Bracts yellowish-green, comblike margin, ending
    with a short-stiff spine.

6
Russian KnapweedCentaurea repens
  • GROWTH Creeping perennial, dense colonies
    produced from buds on roots.

7
Russian KnapweedCentaurea repens
  • ROOTS Deep (25)
  • FLOWERS Pink to purple on tips of stems.
  • BRACTS papery with pointed margin.
  • Causes Chewing Disease.

8
Spotted KnapweedCentaurea maculosa
  • GROWTH Biennial, 3 ft tall.
  • STEM Covered with fine hair.

9
Spotted KnapweedCentaurea maculosa
  • FLOWER Pink to purple, rarely white. Seed head
    bracts are black tipped, appear spotted.
  • Rosette forms the first year, flower stalks the
    second year.
  • Very aggressive.

10
Squarrose KnapweedCentaurea vigata
  • Perennial, erect to 18 inches.
  • STEMS Many branched, covered with dense fine
    hair.

11
Squarrose KnapweedCentaurea vigata
  • LEAVES covered with dense fine hair.
  • ROOTS Taproot.
  • Sprouts back after fire.

12
Squarrose KnapweedCentaurea vigata
  • FLOWER at the end of the stems.
  • Rose to pink.
  • Bract tips spines are sharp, spreading, and
    recurved.

13
Yellow Star ThistleCentaurea solstitialis
  • FLOWER Develop at tips of stems. Bracts bear
    3/4 thorns.
  • SEEDS
  • A single plant can produce 150,000 seeds.
  • Plumed unplumed

14
Yellow Star ThistleCentaurea solstitialis
  • LEAF Leaf clasps stem and appears winged.

15
Yellow Star ThistleCentaurea solstitialis
  • GROWTH 2-3 ft. annual. Invades Cheatgrass sites.
    Spreads rapidly. Changes completely the
    habitats that it invades.

16
Yellow Star ThistleCentaurea solstitialis
  • Dandelion looking rosette forms after
    germination.

17
CanadaThistleCirsium arvense
  • Growth Perennial up to 5 ft. tall
  • Leaves wavey margins, yellowish spines

18
Canada ThistleCirsium arvense
  • Flowers Purple, occasionally white
  • Stems single, branched near top, hollow

19
Musk Thistle Carduus nutans
  • GROWTH Erect, up to 7 ft. tall. Biennial,
    rosette formed first year, stem elongates the
    second year.

20
Musk Thistle Carduus nutans
  • LEAVES Dark green with light midrib, hairless on
    both sides.
  • STEMS Hairless
  • SEEDS Can be in excess of 20,000 per plant.

21
Musk Thistle Carduus nutans
  • FLOWERS Solitary. Heads nodding by mid summer.
    1.5-3 diameter. Bright purple, sometimes white.
    Spiny bracts.

22
Scotch Thistle Onopordum acantium
  • GROWTH Erect, up to 8 ft. tall. Biennial,
    rosette formed first year, stem elongates the
    second year.
  • LEAVES Velvet gray, hairy on both sides.
  • STEMS Spiny leaf wings extend down onto stem.

23
Scotch ThistleOnopordum acantium
  • FLOWERS Numerous, spiny rounded on the bottom
    but flat on top. Pale purple to violet. Flowers
    stand alone on branch tips.

24
Dalmatian ToadflaxLinaria genstifolia ssp.
dalmatica
  • Creeping perennial. Up to 3 ft tall.
  • LEAVES alternate and waxy.
  • Heart shaped.
  • Clasp the stem.

25
Dalmatian ToadflaxLinaria genstifolia ssp.
dalmatica
  • Flowers yellow snapdragon-like, with an orange
    bearded throat.
  • 1 long
  • Serious problem in Colorado and Arizona.

26
Yellow ToadflaxLinaria vulgaris
  • Creeping perennial, 1-2 ft tall.
  • Narrow, strap like 2 leaves.
  • May be harmful to livestock.

27
Yellow ToadflaxLinaria vulgaris
  • Yellow snapdragon-like flower with an orange
    throat.
  • Referred to as butter and eggs

28
Salt CedarTamarix ramosissima
  • Growth 5-20 ft shrub or small tree.
  • Stems reddish-brown bark, highly branched.

29
Salt CedarTamariz ramosissima
  • Leaves small, scale-like,
  • Flowers pink to white, finger-like clusters.

30
Leafy SpurgeEuphorbia esula
  • Aggressive, up to 3 ft.
  • Milky latex.
  • ROOTS
  • Creeping
  • 25 ft deep
  • Sprouts from root buds.

31
Leafy SpurgeEuphorbia esula
  • Yellowish green bracts enclose flowers.
  • Seed capsules rupture, throwing seeds up to 15
    feet.

32
Hoary CressWhite Top, PepperweedCardaria draba
  • Perennial, 3 ft tall.
  • Flowers white, densely clustered.
  • Gray/green leaves, clasping.

33
Perennial Pepperweed Tall White TopLepidium
latifolium
  • Creeping perennial up to 6 ft. tall.
  • Leaves have prominent midvein
  • White flowers in a rounded cluster.

34
Rush SkeletonweedChondrilla juncea
  • Growth Perennial- up to 4 feet.
  • Stems Appear leafless. Lower stem covered with
    coarse brown hairs
  • Stems and leaves produce milky latex.

35
Rush SkeletonweedChondrilla juncea
  • Flower Yellow scattered among branches.
  • Basal leaves form a dandelionlike rosette

36
Medusahead RyeTaeniatherum caput-medusae
  • Growth aggressive winter annual 6-24 inches.
  • Leaves rolled
  • Flower Long-awned spiked, mature awns twisted
    and barbed.
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