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.
Species
Currently accepted species include:- Penaea acuta Thunb.
- Penaea acutifolia A.Juss.
- Penaea candolleana Stephens
- Penaea cneorum Meerb.
- Penaea dahlgrenii Rourke
- Penaea dubia Stephens
- Penaea ericifolia Gilg
- Penaea ericoides Endl.
- Penaea formosa Thunb.
- Penaea fruticulosa L.f.
- Penaea fucata L.
- Penaea geneiophora Byng & Christenh.
- Penaea gigantea Byng & Christenh.
- Penaea lanceolata Byng & Christenh.
- Penaea lateriflora L.f.
- Penaea micrantha Byng & Christenh.
- Penaea microphylla Byng & Christenh.
- Penaea mucronata L.
- Penaea mundii Byng & Christenh.
- Penaea petraea Byng & Christenh.
- Penaea retzioides Byng & Christenh.
- Penaea rupestris Byng & Christenh.
- Penaea ruscifolia Byng & Christenh.
- Penaea sarcocolla L.
- Penaea speciosa Byng & Christenh.
- Penaea sulcata Byng & Christenh.