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Compound leaves may be pinnate with pinnae (leaflets) on both sides of a rachis (axis), or may be palmate with multiple leaflets arising from a single point. [1] Leaf structure is described by several terms that include: Bipinnate leaf anatomy with labels showing alternative usages A ternate compound leaf with a petiole but no rachis (or rachillae)
The lamina is the expanded, flat component of the leaf which contains the chloroplasts. ... Dicot leaves have blades with pinnate venation ...
Pinnate venation in which the secondary veins terminate at the margin s, often as teeth. crateriform In the shape of a saucer or shallow cup; hemispherical or more shallow. cremnophyte A plant adapted to growing on, especially hanging from, cliff faces or crevices. Compare chasmophyte. [28] [29] crenate Having blunt or rounded teeth; scalloped ...
Shape, margin and venation. Leaf Parts: – A complete leaf is composed of a blade, petiole, and stipules, but in many plants one or more might be lacking or highly modified. Blade – see lamina. Lamina – the flat and laterally-expanded portion of a leaf blade. Leaflet – a separate blade, among others, of a compound leaf
The good news for the milkvetch plant is that they usually need wildfire to sprout — meaning dormant seeds now have a massive new habitat for a new crop of the rare shrub.
This fern is producing a new frond by circinate vernation. Circinate vernation is the manner in which most fern fronds emerge. As the fern frond is formed, it is tightly curled so that the tender growing tip of the frond (and each subdivision of the frond) is protected within a coil.
The Supreme Court on Thursday revived a requirement that owners of millions of small businesses register with an arm of the Treasury Department charged with fighting money laundering and other ...
Indiana may not have been one of the very best teams in college football, but a team that goes 11-1 in a power conference was always going to be a foregone conclusion to make the 12-team College ...