The University of Arizona Cooperative Extension (reg)

  About the Journal



  This Issue:
   The Baker Endowment
   Calendar of Events
   Things to Expect & Do
   Ants: The Good, the
          Bad, and the Zany
   Barnyard Trivia
   Landscaping with Good
   Word Wise
   Speaking of Spinach
   Spinach Recipes
   Beautiful Brittlebrush
   Computer Corner
   Invasive Plant Notes
   Book Review
   Harvest Time Puzzle
   Go Native with
   Can You Identify This
   Homing in on Jojoba
   The Plant Vampires
   Of Friendships &
   Garden-Smart TIPS

   Fall Garden Festival

Master Gardener Journal  

Word Wise

Definitions for terms used in this issue...

annual (see Good Taste)-a plant that germinates, flowers, sets seed, and dies in the same year; as opposed to a biennial or perennial plant.

aphids (see Ants)-small, soft-bodied insects of the family Aphididae with mouthparts specially adapted for piercing and feed by sucking sap from plants.

bolt (see Spinach)-to produce flowers and seeds prematurely.

bulbils (see Identify)-small bulbs or bulblike structures in place of flowers, or in a leaf axil.

chlorosis (see Vampires)-lacking chlorophyll; the yellowing or whitening of normally green plant tissue because of a decreased amount of chlorophyll, often as a result of disease or nutrient deficiency.

ecosystem (see Ants)-a community of organisms and its environment functioning as an ecological unit

forage (see Ants)-to wander in search of food or provisions.

formic acid (see Ants)-a fuming liquid acid found in ants and some plants that induces blisters. Used commercially in textile dyeing and finishing.

habitat (see Vampires)-the area or environment where an organism or ecological community normally lives or occurs, as in a desert habitat.

histamine (see Ants)-a tissue compound released during an allergic reaction that causes dilation of capillaries, contraction of smooth muscle, and stimulation of gastric acid secretion.

honeydew (see Ants)-an excretion from insects such as aphids, mealybugs, whiteflies, and soft scales, consisting of modified plant sap.

host plant (see Vampires)-a plant that a parasitic plant or animal lives on.

leaf curl (see Vampires)-a plant disease caused by a fungus (genus Taphrina) or virus (especially genus Begomovirus of the family Geminiviridae), characterized by curling of leaves

mandibles (see Ants)-the forward-most pair of mouthparts of an insect.

metamorphosis (see Ants)-the change in form that takes place as insects grow from immature stage to adult.

offsets (see Identify)-a shoot that develops laterally at the base of a plant, often rooting to form a new plant.

organically grown (see Good Taste)-grown without the use of synthetic fertilizers or pesticides.

panicle (see Identify)-a loose, irregularly branched inflorescence with stalked individual flowers

perennial (see Good Taste)-a plant that lives 3 or more years

pheromones (see Ants)-substances secreted by organisms to affect the behavior or development of other members of the same species.

rosette (see Identify)-a cluster of spreading or radiating basal leaves

soil structure (see Good Taste)-the manner in which soil particles are aggregated or grouped together. The structure of surface soils is generally either granular or sandy. The four types of subsurface aggregates are: platy, blocky, prismatic, or massive. Good structure allows rapid movement of air and water through soil.

swales (see Go Native)-low tracts of land, especially where moist or marshy; shallow trough-like depressions that carry water mainly during rainstorms or snowmelts.

symmetrical (see Identify)-a exhibiting symmetry; evenly shaped as opposed to irregularly shaped; having balanced proportions; having the organs or parts of one side corresponding with those of the other

tibia (see Vampires)-shinbone; the inner bone of the human leg between the knee and the ankle; the corresponding leg segment in insects.

Maricopa County Master Gardener Volunteer Information
Last Updated October 4, 2003
Author: Lucy K. Bradley, Extension Agent Urban Horticulture, University of Arizona Cooperative Extension, Maricopa County
© 1997 The University of Arizona, College of Agriculture and Life Sciences, Cooperative Extension in Maricopa County
Comments to 4341 E. Broadway Road, Phoenix, AZ 85040,
Voice: (602) 470-8086 ext. 301, Fax (602) 470-8092