Penaea

{{short description|Genus of Penaeaceae plants}}

{{Automatic taxobox

|image = Penaea mucronata 1DS-II 3-6969.jpg

|image_caption = Penaea mucronata

|display_parents = 2

|taxon = Penaea

|authority = L.Sp. Pl.: 111 (1753)

|subdivision_ranks = Species

|subdivision = See text

|synonyms =

• Brachysiphon A.Juss.
• Endonema A.Juss.
• Glischrocolla (Endl.) A.DC.
• Saltera Bullock
• Sarcocolla Boehm.
• Sarcocolla Kunth
• Sonderothamnus R.Dahlgren
• Stylapterus A.Juss.

|synonyms_ref=

}}

File:Brickleaves Genus Penaea.jpg in Cape Town, South Africa]]

Penaea is a genus of flowering plants in the family Penaeaceae, found in southern South Africa. They have an unusual type of embryo sac development; after two rounds of mitosis, four nuclei are formed at each pole, leading to a mature embryo sac containing four polar groups each with three cells. When found in other taxa, these embryo sacs are termed Penaea-type.{{cite journal |doi=10.3390/life10070104 |title=Endosperm of Angiosperms and Genomic Imprinting |year=2020 |last1=Kordyum |first1=Elizabeth L. |last2=Mosyakin |first2=Sergei L. |journal=Life |volume=10 |issue=7 |page=104 |pmid=32635326 |pmc=7400472 |doi-access=free |bibcode=2020Life...10..104K }}