Definitions

Definitions as used in descriptions:

Channel - Mostly used in describing Sansevieria and means a lengthwise depression along one side of a leaf, either partly are all the way from the base to the tip.

Crossbanding - refers mostly to Sansevieria but also on other plants.  It is horizontal bands of color that is different, either darker or lighter, than the base color on the leaf.

Flower Spike - used generally to denote inflorescense, racemes, panicles, or stalks, stems, or any other part of a plant that produces flowers at the top of said growth.

Humus - is basically a finely ground compost rich in nutrients.  A quality store bought potting soil is usually rich in humus.

Juvenile Form - refers to a young immature plant that markedly differs from and bears little resemblence to an adult form

Rhizome - is a thick underground root with small feeder roots growing on it.  Rhizomes are very succulent, filled with moisture, which allows plants to stay alive in drought or dry seasons in the wild.

Stolon - is an above ground stem similar to a root, may be smooth or covered with scales, at which a new plant develops on the end of the stolon. 

Teeth - is usually used in regard to the sharp hooked shark-like spines along the leaf edges of Bromeliads, Dyckia, Encholirium, Hechtia, Orthophytum, etc.  Spines to me are thin needle-like things found on cactus and 'teeth' seems to more accurately describe those found on Bromes.

Well-drained - refers to potting soil mixtures that allow water to pass quickly though the pot and out of the drain holes.  Not so fast the the soil doesn't get wet, but where it only stays soaking wet for about an hour and then just damp afterwards.  If you can squeeze a pot after an hour or two and get more than a few drops water out of the bottom then your soil is not as well-drained as it should be.