### plant | tracheophyte | weed | cocklebur:

Rough cocklebur
* Some rough cockleburs have worldwide distribution
* is an annual that survives fire only if the seeds survive.

Spiny cocklebur
* is an annual plant found in highly disturbed habitats and farm areas
  - that blooms in summer
  - found in open and disturbed waste places
* reproduces by seed.

Common weed
* Many common weeds provide food and shelter for useful insects.
* Most common weeds invade landscapes.
* Some common weeds have odor.

Dill weed
* Most dill weeds are part of dill.
* Some dill weeds contain fiber.

Invasive weed
* Many invasive weeds are also on the state's noxious weed list.
* Most invasive weeds have seeds that travel far using special adaptations for hitching a ride.
* Some invasive weeds grow in crevices
  - rock crevices
* are often responsible for the drastic modification of native ecosystems.
* crowd out valuable native species by forming solid stands.
* grow by sending roots or runners out below or just above the ground.
* raise crop production costs and cause post-harvest losses.

Khaki weed
* creeping perennial spreading vegetatively and by seed.
* prostrate spreading plant with trailing red-purple stems covered with short hairs.

### plant | tracheophyte | weed:

Nettle
* Most nettles have brown color
  - flowers
* Most nettles have light brown color
  - rhizomes
  - shallow rhizomes
  - white flowers
  - obtain water
  - provide habitats
* Some nettles cause irritation.
* Some nettles contain acid
  - nutrients
  - proteins
  - tough fibre
* Some nettles have plants
  - salinity preference
  - occur in meadows
* Some nettles produce female flowers
* also contain a whole host of other nutrients, including iron
  - lysine
  - eat young minnows, bay anchovy eggs, worms, and mosquito larvae
  - work to reverse anemia, even that caused by feminine monthly cycles
* are a good source of chlorophyll, and are a traditional spring tonic
  - iron,especially young nettles
  - many other vitamins and minerals
  - useful and medicinal botanical
  - an extremely important plant in Nepal
  - high in protein for a green plant
  - known primarily for their ability to induce skin irritation following contact
  - one of the popular plant remedies used in the United Kingdom
  - reason to avoid caving in the summer
  - widespread and common
* can grow on most soil types and can tolerate drier soils
  - have effects
* cleanse the blood and strengthen the body's resistance to certain allergies.
  - large yellow rhizomes that enable the plant to spread and reproduce itself quickly
  - no excretory or respiratory organs
* includes cell membranes
  - cells
  - corpi
  - cytoplasm
  - nuclei
  - plasma membranes
  - sections
  - vacuoles
* nourish the blood and kidneys and help to prevent varicose veins.
* protect beehives from predation of frogs.

### plant | tracheophyte | weed | nettle | dead nettle:

Henbit
* dead nettle
* is found in moist soils and can be especially troublesome in turf during early spring
  - throughout the United States
  - in the mint family and grows as a winter annual in Arkansas
  - primarily an upright grower but can root and vine from nodes
  - typically a winter annual that usually germinates in early fall
* sprouts in the fall and has square stems and pink-purple flowers.
* winter annual that sprouts from seeds in early fall and grows until the cold stops it
  - weed that has oppositely arranged leaves with lobed margins
  - while ground ivy or creeping charlie perennial

Sea nettle
* Most sea nettles have brown color
* Most sea nettles have light brown color
* Some sea nettles have salinity preference.
* are geared for high reproduction.
  - few enemies

Sting nettle
* Most sting nettles have flowers
* can have effects.
  - shallow rhizomes
* obtain water.