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 Image: Basionym: Genus Basionym: Notes:

1. Lepidium reticulatum Howell Lepidium reticulatum Howell

2. Monardella reflexa Howell Monardella reflexa Howell

3. Antennaria latisquama Piper Antennaria latisquama Piper

4. Festuca howellii Hack. ex Beal Festuca howellii Hack. ex Beal

5. Allium watsonii Howell Allium watsonii Howell

6. Cardamine pratensis var. occidentalis S. Wats. Ex B.L. Rob. Cardamine pratensis var. occidentalis S. Wats. Ex B.L. Rob.

7. Cardamine penduliflora O.E. Schulz Cardamine penduliflora O.E. Schulz

8. Cardamine penduliflora O.E. Schulz Cardamine penduliflora O.E. Schulz

9. Cotyledon oregonensis S. Watson Cotyledon oregonensis S. Watson

10. Arabis suksdorfii Howell Arabis suksdorfii Howell

11. Potentilla ashlandica Greene Potentilla ashlandica Greene

12. Cirsium howellii Petrak Cirsium howellii Petrak

13. Erigeron nudatus A. Gray Erigeron nudatus A. Gray

14. Spiraea occidentalis S. Watson Spiraea occidentalis S. Watson

15. Arabis secunda Howell Arabis secunda Howell

16. Peucedanum microcarpum Coult. & Rose Peucedanum microcarpum Coult. & Rose

17. Stanleya viridiflora Nutt. var. confertiflora Rob. in Gray Stanleya viridiflora Nutt. var. confertiflora Rob. in Gray

18. Sullivantia oregana S. Watson Sullivantia oregana S. Watson

19. Castilleja levisecta Greenm. Castilleja levisecta Greenm.

20. Arabis koehleri Howell Arabis koehleri Howell
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