- Ranunculus californicus
- Picture 1
- Picture 2
- Picture 3
- Raphanus sativus
- Picture 1
- Picture 2
- Picture 3
- Rhamnus californica
- Picture 1
- Picture 2
- Rhamnus crocea
- Rhamnus ilicifolia
- Picture 1
- Picture 2
- Picture 3
- Rhododendron macrophyllum
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Rhododendron occidentalis
- Picture 1
- Picture 2
- Picture 3
- Ribes californicum
- Picture 1
- Picture 2
- Ribes malvaceum
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
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- Romneya trichocalyx
- Rorippa nasturtium-aquaticum
- Picture 1
- Picture 2
- Picture 3
- Rosa californica
- Picture 1
- Picture 2
- Picture 3
- Rubus discolor
- Picture 1
- Picture 2
- Picture 3
- Rubus parviflorus
- Picture 1
- Picture 2
- Picture 3
- Rubus spectabilis
- Rubus ursinus
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Rubus ursinus berries
- Rumex acetosella
- Picture 1
- Picture 2
- Rumex crispus
- Rumex salicifolius
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