GLOSSARY

Bract.

Trichomes
Trichomes are hairs or protuberances of various kinds on plants Some trichomes are hollow and needle-like, as in stinging nettles, where they actively inject some poisonous venom in mammalian skin. The trichomes in stingig nettles are made of hollow silica tubes so sharp as to be able to pierce skin at the slightest touch.

Other trichomes may be glandular hairs, some branched.

Glabrous
Lacking hairs or trichomes.

Hirsute
Coarsely Hairy

Hispid
Having bristly hairs

Downy
Having an almost wool-like covering of long hairs

Pilose
Pubescent with long, straight, soft, spreading or erect hairs

Pubescent
Bearing hairs or trichomes of any type

Puberulent
Minutely pubescent; having fine, short, usually curly, hairs

Strigose
Having straight hairs all pointing in more or less the same direction as along a margin or midrib

Strigillose
Minutely strigose

Villous
Having long, soft hairs, often curved, but not matted

Villosulous
Minutely villous

Stolons
The short-lived spreading stems by which some spreading plants propagate themselves. Stolons can be either above ground, or below ground. They produce roots at the nodes, which are distributed along the stolon.

Runners
The overground spreading 'stems' (or stolons) with which some plants use to propagate and spread to cover the ground. An example of a plant that spreads by way of Runners is Creeping Buttercup.

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