In
botany, a sinus is a space or indentation between two lobes or teeth, usually on a leaf.
The term is also used in
mycology. For example, one of the defining characteristics of North American species in the ''Morchella elata''
clade
A clade (), also known as a monophyletic group or natural group, is a group of organisms that are monophyletic – that is, composed of a common ancestor and all its lineal descendants – on a phylogenetic tree. Rather than the English term, ...
of
morel
''Morchella'', the true morels, is a genus of edible sac fungi closely related to anatomically simpler cup fungi in the order Pezizales (division Ascomycota). These distinctive fungi have a honeycomb appearance due to the network of ridges with ...
s is the presence of a sinus where the
cap attaches to the
stipe.
See also
*
Leaf shape
*
Sulcus (morphology)
References
Plant morphology
Fungal morphology and anatomy
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