San Francisco Bay Area Plant Encyclopedia
- Othonna capensis “Ruby Necklace”
- Othonna cremnophila
- Othonna cyclophylla
- Othonna herrei x cremnophila
- Othonna lobata
- Othonna triplinervia
- Oxalis adenophylla
- Oxalis aurea
- Oxalis carnosa
- Oxalis “Coppertones”
- Oxalis fabifolia
- Oxalis flava
- Oxalis flava v. lupinifolia
- Oxalis gigantea
- Oxalis herrerae
- Oxalis namaquana
- Oxalis palmifrons
- Oxalis peduncularis
- Oxalis polyphylla var. heptaphylla
- Oxalis “Sunset Velvet”
- Oxalis tetraphylla deppei
- Oxalis triangularis “Ebony”
- Oxalis triangularis “Myke”
- Oxalis versicolor
- Oxalis vulcanicola
- Oxalis “Zinfandel”
- Pachycereus marginatus
- Pachycereus pringlei
- Pachycereus schottii fa. monstrosus
- Pachycereus schottii fa. monstrosus spiralis