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An abnormal growth or swelling on a plant, caused by insect attack, fungi or bacteria.
A group of closely-related species. See Classification.
Following fertilisation, germination is the sprouting of a seed into a seedling.
To be swollen or protruding, eg, of joints.
To be smooth, hairless.
A surface structure that secretes oils or resins. Some plants produce glandular hairs, such as the stinging nettle.
Of glands or containing glands.
Covered in a powdery bloom, as on plums or grapes.
Like a globe, spherical. Often used to describe plant organs.
The tiny, barbed spines or bristles found on the areoles of some cacti and other plants.