Central part of an orchid’s corolla, different from the two other petals in shape and size.

Each of the two main lobes of a bilobate corolla.

Also known as bullwort or bishop’s flower.

In form of lance.

White, milky fluid emerging from plants when their stalks are cut or damaged, like the rubber plant or christ plant. (Also see bleeding.)

Plant organ of energy production. Light reaching the green part of the leaf initiated the process of photosynthesis (sepals, petals, tendrils and bracts are modified leaves); structure that arises from a shoot or stem and whose primary function the production of nourishment through photosynthesis, typically constituted by blade, petiole, sheath and a pair of stipules, but any of these parts may be missing.

Part of a pinnate compound leave, also called pinna; secondary leaf that is part of a compound leaf like several types of acacia. (See also compound leaf, pinna, pinnate).

Woody vine.

Also called blazing star or gayfeather

Rock dust, predominantly calcium carbonate, using in liming soil

Adding limestone or other alkaline substances to correct excessive soil acidity

In reference to narrow leaf with parallel margins.

(Lisianthus)

Each of the round projection of the margin of certain leaves, like the hydrangea or fig.