Penaea

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]

Penaea
Penaea mucronata
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Penaeaceae
Genus: Penaea
L.[1]
Species

See text

Synonyms[2]
  • Brachysiphon A.Juss.
  • Endonema A.Juss.
  • Glischrocolla (Endl.) A.DC.
  • Saltera Bullock
  • Sarcocolla Boehm.
  • Sarcocolla Kunth
  • Sonderothamnus R.Dahlgren
  • Stylapterus A.Juss.

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
  1. Sp. Pl.: 111 (1753)
  2. "Penaea L." Plants of the World Online. Board of Trustees of the Royal Botanic Gardens, Kew. 2017. Retrieved 26 July 2020.
  3. 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.
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