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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)
- ^ a b "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.
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