### plant | tracheophyte | herb | grass | ryegrass:

Perennial ryegrass
* All perennial ryegrasses require well-drained soils of medium to high fertility.
* begins growth early in spring.
* bunch grass
  - type grass with a medium to fine texture
* bunch-type grass with a medium texture and medium to high shoot density
  - quality very similar to Kentucky bluegrass
* cool-season bunchgrass found throughout the United States.
* has rapid seed germination and seedling establishment qualities.
* is also a common component of turfgrass mixtures
  - established by seed only
  - fast germinating, grows prolifically, and can be grazed heavily
  - hardy and grows fast, providing shade for the two slower grasses
  - more tolerant of cold, disease, and drought
* is much less likely to survive the winter
  - more vigorous in the seedling stage than Kentucky bluegrass
  - quite susceptible to winter damage
  - susceptible to a moderate number of fungal diseases
  - the grass species most associated with facial eczema
  - tolerant to traffic
  - very susceptible to chlorsulfuron damage
* produces well under moderate temperatures and requires an abundance of moisture.
* provide early cover for improved trafficability and erosion control.
* requires a medium to high degree of culture in Nebraska
  - medium levels of water to keep producing
* short-lived perennial.
* stays reasonably short and can be mowed often.
* turfgrass with a spike-type seed head.

Savanna grass
* Most savanna grass is coarse and grows in patches with interspersed areas of bare ground.
* Some savanna grass provides food.

### plant | tracheophyte | herb | grass:

Sea grass
* Some sea grass causes central nervous system problems
  - provides food
* are an important shelter for many young fish and invertebrates
  - coastal stabilizers as they provide protection against coastal erosion
  - sensitive to hydrocarbon uptake and oiling
  - therefore nutrient sinks and sources and they help in nutrient recycling
  - very sensitive to some human impacts
* can hold as many or more varieties of life than the deeper depths of the ocean.
* die off.
* form an important part of the vegetation to be found on coral reefs.
* have active roots, symbiotic partners, and high productivity.
* is the most darling food of sea turtles with an herbivorous nature.
* provide a nursery and habitat for larval and juvenile fish and shrimp.
* stabilize sea beds and protect shorelines from erosion by absorbing energy from waves.
* suffers when it is overwhelmed by freshwater.
* tends to simply grow over the coral, choking it.

Sheep fescue
* grows in a clump rather than devel oping into a sod.
* is grass

Short grass
* deteriorates rapidly in hot weather and invites weed growth during the season.
* discourages voles.
* is therefore better than long grass, which catches a shower before it reaches the soil.

Shorter grass
* exposes the soil to more heat and sun.
* has a smaller, shallower root system.

Sudan grass
* is an annual grass sorghum grown in Kansas for feed and hay
  - often the sorghum preferred for pasturing
* summer annual that requires much heat for good growth.

Switch grass
* has an open head.
* is considered a summer to early-fall grass
  - found in wet lowlands and wet prairie
  - panic grass

### plant | tracheophyte | herb | grass:

Tall grass
* can be up to five feet tall
  - short out a hot wire when it gets wet
* develops deeper roots for increased foliage.
* encourages deep roots and also shades out crabgrass and low-growing weeds.
* forms an unbroken understory that contrasts with the white trunks of the aspen.
* offer another habitat for insects.
* provides food and shelter for the grasshoppers
  - protective cover for nests
* stems stimulate deep root growth, since grass roots grow as deep as the blade grows high.
* tends to crowd out clover.