McSush/Wikimedia Commons/CC BY 3.0. Leaf margins-The shape of the margin of leaf lamina or leaf blade is dependent on the extent to which the leaf blades are subject to varieties of incisions, cuts or irregularities or completely free from them. The leaf is attached to the stem by the leaf base (hypo-podium) and may bear two lateral small leaf-like structures called stipules. Trees having a leaf that is pinnately compound will have leaflets growing from several places along the stalk or rachis—there can be as many as 21 leaflets and as few as three. A cordate leaf has the base rounded in the shape of a heart. The leaves with stipules are called stipulate leaves and the leaves without stipules are called ex-stipulate leaves. An angle that is less than 90º with straight lines and having a point. Leaflet: One of the parts of a compound leaf.Leaflets do NOT have axillary buds. Mid 19th century; earliest use found in Philosophical Transactions of the Royal Society of London. For example, in table T the rows with a KEY of 'config' and 'ctx' have descendents (children and grandchildren) and are therefore not leaf nodes in that context. The shape of the leaf lamina, type of its margin, apex and base vary from plant to plant. This is an example of a decompound leaf structure, meaning it is divided three or four times. I. aquifolium, with the leaf blades highly lustrous, especially adaxially, and flowers and fruits usually clustered, produced from the axils on branches of the previous season). Acute Leaf Apex. Studying leaf shape and the arrangement of leaves on a stem is the most common way of identifying a tree in the field during the growing season. Examples : Castanopsis indica, Quercus dentata (Fagaceae) etc. A leaf with many notches. This kind of leaf edge can come in several shapes such as linear (picture), deltoid, eliptical, ovate and more. Leaf insects (Phyllium philippinicum) have broad, flat bodies and appear as leaves. Petiole: The stalk of a leaf. A typical leaf consists of three main parts: leaf base, petiole, and lamina. 11. Compound Leaf. The picture below is a eucalyptus leaf which are eaten by many animals, but are particularly known for their … leaf blades dull or barely sublustrous, and flowers and fruits solitary or in solitary, peduncled cymes on the branchlets of the current season (vs. Crenated Leaf. They range in size from 28 mm to 100 mm with females usually being larger than males. ... A heart shaped leaf with a sharp apex. Simple: The leaf may be lobed or divided, but does not form distinct leaflets. The term acute is most often applied to apices, but it is sometimes used for bases where it refers to a wider base than cuneate. Leaf blade: The broad, expanded part of a leaf. The Leaf insect inhabits rainforests in South Asia, islands of the Indian Ocean, and Australia. 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