Penaea

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids II
Ordo: Myrtales

Familia: Penaeaceae
Genus: Penaea
Species: P. acutifolia – P. cneorum – P. dahlgrenii – P. mucronata
Name

Penaea L. Sp. Pl. 1: 111. (1753)

Type species: Penaea mucronata L. Sp. Pl. 1: 111. (1753)

References

Linnaeus, C. 1753. Species Plantarum 1: 111.
African Plants Database (version 3.4.0). Penaea. Conservatoire et Jardin botaniques de la Ville de Genève and South African National Biodiversity Institute, Pretoria. Accessed: 2018 Aug. 16.
International Plant Names Index. 2016. Penaea. Published online. Accessed: Apr. 9 2016.
Tropicos.org 2016. Penaea. Missouri Botanical Garden. Published on the internet. Accessed: 2016 Apr. 9.
USDA, ARS, Germplasm Resources Information Network. Penaea in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 2016 Apr. 7.

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.[3]
Species

Currently accepted species include:[2]

Penaea acuta Thunb.
Penaea acutifolia A.Juss.
Penaea candolleana Stephens
Penaea cneorum Meerb.
Penaea dahlgrenii Rourke
Penaea dubia Stephens
Penaea ericifolia (A.Juss.) Gilg
Penaea ericoides (A.Juss.) Endl.
Penaea formosa Thunb.
Penaea fruticulosa L.f.
Penaea fucata L.
Penaea geneiophora Byng & Christenh.
Penaea gigantea (R.Dahlgren) Byng & Christenh.
Penaea lanceolata (R.Dahlgren) Byng & Christenh.
Penaea lateriflora L.f.
Penaea micrantha (R.Dahlgren) Byng & Christenh.
Penaea microphylla (Rourke) Byng & Christenh.
Penaea mucronata L.
Penaea mundii (Sond.) Byng & Christenh.
Penaea petraea (W.F.Barker) Byng & Christenh.
Penaea retzioides (Sond.) Byng & Christenh.
Penaea rupestris (Sond.) Byng & Christenh.
Penaea ruscifolia (R.Dahlgren) Byng & Christenh.
Penaea sarcocolla L.
Penaea speciosa (Sond.) Byng & Christenh.
Penaea sulcata (R.Dahlgren) Byng & Christenh.

References

Sp. Pl.: 111 (1753)
"Penaea L." Plants of the World Online. Board of Trustees of the Royal Botanic Gardens, Kew. 2017. Retrieved 26 July 2020.
Kordyum, Elizabeth L.; Mosyakin, Sergei L. (2020). "Endosperm of Angiosperms and Genomic Imprinting". Life. 10 (7): 104. doi:10.3390/life10070104. PMC 7400472. PMID 32635326.