LESSON FOUR: Rangeland Plant Classification
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1 LESSON FOUR: Rangeland Plant Classification
2 Classification of Range Plants Plant Type: The anatomical type of plant Origin: Where the plant developed Life Span: How long a plant lives Season of Growth: When most of a plant s growth occurs Growth Form: How a plant spreads vegetatively Forage Value: How nutritious the plant is to grazing animals
3 Grasses Grass-likes Range Plant Type Forbs Succulents Shrubs
4 Range Plant Type: Grasses Grasses are herbaceous plants that have: Long, narrow leaves with parallel veins Leaves in two rows on the stem Jointed stems with nodes that are hollow between the joints Seeds that are grain-like Photo: Indiangrass
5 Range Plant Type: Grass-likes Grass-likes are herbaceous plants (including sedges and rushes) that: Look like grasses but have solid, unjointed stems o Sedges have triangular stems with leaves on three sides o Rushes have round stems with leaves on two sides Have leaves with parallel veins growing directly from the ground Photo: Upland Sedge
6 Range Plant Type: Grasses & Grass- Likes Sedges have edges Rushes are round Grasses are Hollow What have you found? Did you guess a rush?
7 Range Plant Type: Forbs Forbs are herbaceous plants that: Have broad leaves of various shapes Have leaves with net-like veins Usually have showy flowers Have leaves and stems that die back to the ground each year Also may be called wildflowers Photo: Compass Plant
8 Range Plant Type: Forbs-Legumes Legumes are a type of forb that: Are members of the pea or legume family and include alfalfa, beans and peas. Contain symbiotic bacteria called Rhizobia within nodules of their root systems. These bacteria can fix molecular nitrogen from the atmosphere into ammonia. Ammonia is then converted to ammonium which can be used by the plants. Have a unique flower petal structure that includes standard or banner, two wings and a keel. See Legume Flower Morphology and Terminology: Photo: Breadroot Scurfpea (Indian Breadroot)
9 Range Plant Type: Forbs- Legumes Nebraska is home to 59 native legume species. Native Legumes include: Breadroot Scurfpea Purple, White, Silky, Yellow and Nine Anther Prairie Clovers Roundhead Lespedeza Prairie Golden Pea Leadplant Photo: Showy Peavine
10 Range Plant Type: Succulents Succulents have leaves or stems that are thickened and fleshy to store water in arid conditions When the stems are the water storage organ, leaves are small and short-lived or leaves have become sharp spines All cacti are succulents but not all succulents are cacti Photo: Plains Pricklypear
11 Range Plant Type: Shrubs Shrubs are woody plants that: Have persistent, woody stems that remain alive year to year New growth begins from points above the ground Differ from trees because they have several main stems and do not have a main trunk The part that animals may consume is called browse Photo: Rubber Rabbitbrush
12 Drawing from: Nebraska Plants Toxic to Livestock including Bloat-Causing Plants Rangeland, Pastureland and Cropland Stubbendieck, Carlson, Dunn, Anderson Redfearn
13 Range Plant Origin Native Introduced
14 Range Plant Origin Native plants are part of the original vegetation of North America. Examples of Native plants: Big Bluestem Western Wheatgrass Dotted Gayfeather Winterfat Photo: Big Bluestem
15 Range Plant Origin Introduced plants have brought to North America from another continent. These plants may have been intentionally introduced because they have good forage value or ornamental value or accidentally introduced as a contaminant in crop seeds. Examples of Introduced plants: Smooth Brome Cheatgrass Musk Thistle Common Mullein Photo: Smooth Brome
16 Range Plant Lifespan Annual Biennial Perennial
17 Range Plant Lifespan: Annuals Annual plants live only one growing season. They do not grow a second year from roots or crowns but must start from seeds each year. Annuals may be winter annuals or summer annuals. Winter annuals germinate in the fall, form a rosette of leaves that lives through the winter. The next year it grows, flowers and seeds and dies. Summer annuals germinate in the spring, complete all growth by the end of the growing season and then die. Examples of Annual plants: Wild Buckwheat Cheatgrass Six Weeks Fescue Photo: Annual Buckwheat
18 Range Plant Lifespan: Biennials Biennial plants live only two growing seasons and only flower during the second growing season. Normally biennial plants form a basal cluster of leaves their first growing season and send up a seed stalk during their second growing season. Examples of Biennial plants: Common Mullein Musk Thistle Fourpoint Evening Primrose Photo: Common Mullein
19 Range Plant Lifespan: Perennials Perennial plants live from one year to the next and produce leaves and stems for more than two years from the same crown. Most range plants are perennial. Examples of Perennial plants: Little Bluestem Dotted Gayfeather Winterfat Photo: Little Bluestem
20 Range Plants Season of Growth Cool Season Warm Season
21 Range Plants Season of Growth: Cool Season Cool Season plants make their principal growth during the cool conditions in spring and fall. Cool season plants flower in late spring or early summer. These plants are called C3 plants because their photosynthetic pathway first yields a 3- carbon sugar. Their optimum growth occurs when air temperatures are o F. Examples of Cool Season plants: Prairie Junegrass Needleandthread Western Wheatgrass Downy Bromegrass Photo: Prairie Junegrass
22 Range Plants Season of Growth: Warm Season Warm Season plants make their principal growth during the warmer conditions in late spring through mid-summer. Warm season plants develop seed in late summer or early fall. These plants are called C4 plants because their photosynthetic pathway first yields a 4- carbon sugar. Their optimum growth occurs when air temperatures are o F. Examples of Warm Season plants: Indiangrass Big Bluestem Little Bluestem Blue Grama Photo: Prairie Sandreed
23 Range Plant Growth Form Rhizomatous Stoloniferous Bunch
24 Range Plant Growth Form: Rhizomatous Rhizomatous plants have spreading underground stems. New plants may grow from these rhizomes. Rhizomatous grasses are also classified as sod-forming. Examples of Rhizomatous plants: Prairie Sandreed Prairie Cordgrass Goldenrods Photo: Prairie Sandreed
25 Range Plant Growth Form: Stoloniferous Stoloniferous plants spread by above ground stems. New plants may root at the nodes and form new plants. Stoloniferous grasses (along with rhizomatous grasses) are also classified as sod-forming. Examples of Stoloniferous plants: Buffalograss Bermuda grass Photo: Buffalograss
26 Range Plant Growth Form: Bunch Bunchgrasses have neither rhizomes or stolons. These grasses may grow as individual plants or in distinct clumps or bunches. Examples of bunchgrasses: Blue Grama Little Bluestem Sand Lovegrass Sand Dropseed Photo: Blue Grama
27 Range Plant Forage Value High Medium Low
28 Range Plant Forage Value Forage value is a rating of how well a plant provides nutrients to grazing animals. Forage Value varies from species to species of grazing animal. For example, a plant could have high forage value for cattle and low forage value for deer. Forage Values are characterized as High, Medium or Low.
29 Range Plant Forage Value High Forage Value plants are nutritious, palatable and produce abundant forage. Medium Forage Value plants provide adequate nutrients if eaten, but it is not preferred by the grazing animal and/or does not produce abundant forage. Low Forage Value plants do not provide adequate nutrients to the grazing animal. Some plants with low forage value are poisonous or toxic.
30 Activities Collect plant specimens and determine the plant type, origin, lifespan, season of growth, growth form, and season of growth, Study the structure of legume flowers so that you can identify plants as legumes or non-legumes. Learn which plants in Nebraska have high forage value for beef cattle. References: Range Judging Handbook and Contest Guide for Nebraska Range Plant Classification YouTube Photo: Sawtooth Sunflower
31 Winterfat Scribner Rosettegrass Pitchers or Blue Sage END OF LESSON FOUR
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