Leaf of Dog Rose (Rosa canina), showing the petiole and two leafy stipules

In botany, the petiole is the small stalk attaching the leaf blade to the stem. The petiole usually has the same internal structure as the stem. Outgrowths appearing on each side of the petiole are called stipules. Leaves lacking a petiole are called sessile, or clasping when they partly surround the leaf. Clasping leaves of the Poaceae have an extra structure called the ligule. The Dog Rose (Rosa canina) is a scrambling shrub-like rose species native to Europe, northwest Africa and western Asia. ... The lanceolate-linear, paired stipules of Hibiscus kokio In botany, stipule refers to outgrowths borne on either side of the base of a leafstalk (or petiole). ... Pinguicula grandiflora Botany is the scientific study of plantlife. ... The leaves of a Beech tree A leaf with laminar structure and pinnate venation In botany, a leaf is an above-ground plant organ specialized for photosynthesis. ... A stem is the main axis of a vascular plant that is divided into nodes and internodes and has one or more leaves or buds at the nodes. ... The lanceolate-linear, paired stipules of Hibiscus kokio In botany, stipule refers to outgrowths borne on either side of the base of a leafstalk (or petiole). ... This page is a candidate to be moved to Wiktionary. ... Subfamilies There are 7 subfamilies: Subfamily Arundinoideae Subfamily Bambusoideae Subfamily Centothecoideae Subfamily Chloridoideae Subfamily Panicoideae Subfamily Pooideae Subfamily Stipoideae The true grasses are monocotyledonous plants (Class Liliopsida) in the Family Poaceae, also known as Gramineae. ... Look up ligule in Wiktionary, the free dictionary. ...

Phyllodes are modified petioles. In some plants, the petioles become flattened and widened, while the leaf itself becomes reduced or vanishes altogether. Thus the phyllode comes to serve the purpose of the leaf. Phyllodes are common in the genus Acacia, especially the Australian species, at one time put in Acacia subg. Phyllodineae. Sometimes, especially on younger plants, partially formed phyllodes bearing reduced leaves can be seen. Species About 1,300; see List of Acacia species Acacia tree in the Serengeti, Tanzania Acacia is a genus of shrubs and trees of Gondwanian origin belonging to the Subfamily Mimosoideae of the family Fabaceae, first described from Africa by Linnaeus in 1773. ...