- pinna-rachis (pr) angle
- Distal angle between the hypothetical longitudinal axis of a leaflet and the axis of the rachis in the vicinity of the leaflet (sensu Grobbelaar, 2002).
Expanded glossary of Cycad terms . 2014.
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leaflet angle(s) of insertion — Manner in which the leaflets are arranged or oriented on the rachis. See imbricate, incubous, pinna pinna angle, pinna rachis angle, shielding angle, succubous … Expanded glossary of Cycad terms
pr angle — See pinna rachis angle … Expanded glossary of Cycad terms
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Pinnate — is a term used to describe feather like or multi divided features arising from both sides of a common axis in plant or animal structures, and comes from the Latin word pinna meaning feather , wing , or fin . A similar term is pectinate, which… … Wikipedia
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