Glossary of leaf morphology in the context of Cilia (botany)

A spear is a polearm consisting of a shaft, usually of wood, with a pointed head. The head may be simply the sharpened end of the shaft itself, as is the case with fire hardened spears, or it may be made of a more durable material fastened to the shaft, such as bone, flint, obsidian, copper, bronze, iron, or steel. The most common design for hunting and/or warfare, since modern times has incorporated a metal spearhead shaped like a triangle, diamond, or leaf. The heads of fishing spears usually feature multiple sharp points, with or without barbs.

Spears can be divided into two broad categories: those designed for thrusting as a melee weapon (including weapons such as lances and pikes) and those designed for throwing as a ranged weapon (usually referred to as javelins).

This glossary of botanical terms is a list of definitions of terms and concepts relevant to botany and plants in general. Terms of plant morphology are included here as well as at the more specific Glossary of plant morphology and Glossary of leaf morphology. For other related terms, see Glossary of phytopathology, Glossary of lichen terms, and List of Latin and Greek words commonly used in systematic names.

A shamrock is a type of clover, used as a symbol of Ireland. The word shamrock comes from Irish seamróg ([ˈʃamˠ.ɾˠoːɡ]), which is the diminutive of the Irish word seamair and simply means "young clover".

At most times, Shamrock refers to either the species Trifolium dubium (lesser/yellow clover, Irish: seamair bhuí) or Trifolium repens (white clover, Irish: seamair bhán). However, other three-leaved plants—such as Medicago lupulina, Trifolium pratense, and Oxalis acetosella—are sometimes called shamrocks. The shamrock was traditionally used for its medicinal properties, and was a popular motif in Victorian times.

Alfalfa (/ælˈfælfə/) (Medicago sativa), also called lucerne, is a perennial flowering plant in the legume family Fabaceae. It is cultivated as an important forage crop in many countries around the world and is used for grazing, hay, and silage, as well as a green manure and cover crop. The name alfalfa is used in North America, whereas the name lucerne is more commonly used in the United Kingdom, South Africa, Australia, and New Zealand. The plant superficially resembles clover (a cousin in the same family), especially while young, when trifoliate leaves comprising round leaflets predominate. Later in maturity, leaflets are elongated. It has clusters of small purple flowers followed by fruits spiraled in two to three turns containing 10–20 seeds. Alfalfa is native to warmer temperate climates. It has been cultivated as livestock fodder since at least the era of the ancient Greeks and Romans.

The Coryphoideae is one of five subfamilies in the palm family, Arecaceae. It contains all of the genera with palmate leaves, excepting Mauritia, Mauritiella and Lepidocaryum, all of subfamily Calamoideae, tribe Lepidocaryeae, subtribe Mauritiinae. The subfamily comprises approximately 46 genera and more than 400 species, with members occurring across tropical, subtropical, and warm temperate regions worldwide, best known for their palmateor costapalmate (“fan”) leaves. Historically, this leaf form played a disproportionate role in palm classification, leading to the long-standing assumption that all fan palms represented a single, closely related evolutionary lineage. However, all Coryphoideae palm leaves have induplicate (V-shaped) leaf folds (excepting Guihaia), while Calamoideae palms have reduplicate (inverted V-shaped) leaf folds. Pinnate leaves do occur in Coryphoideae, in Phoenix, Arenga, Wallichia and bipinnate in  Caryota.

Coryphoids are well-represented in the fossil record from the Late Cretaceous (Campanian) onwards, primarily because of the presence of the form genus Sabalites.