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 Image: Basionym: Genus Basionym: Notes:

1. Arabis secunda Howell Arabis secunda Howell

2. Castilleja levisecta Greenm. Castilleja levisecta Greenm.

3. Elymus howellii Scribn. & Merr. Elymus howellii Scribn. & Merr.

4. Article Article

5. Montia rubra Howell Montia rubra Howell

6. Ribes howellii Greene Ribes howellii Greene

7. Article Article

8. Sanguisorba menziesii Rydb. Sanguisorba menziesii Rydb.

9. Saxifraga ferruginea Graham var. diffusa B.L. Johnson Saxifraga ferruginea Graham var. diffusa B.L. Johnson one specimen image; one type description (pdf).

10. Article Article

11. Article Article

12. Penstemon adamsianus Howell Penstemon adamsianus Howell

13. Penstemon adamsianus Howell Penstemon adamsianus Howell

14. Arctostaphylos intricata Howell Arctostaphylos intricata Howell

15. Article Article

16. Article Article

17. Article Article

18. Arctostaphylos hispidula Howell Arctostaphylos hispidula Howell

19. Senecio foetidus Howell Senecio foetidus Howell

20. Vaccinium alaskaense Howell Vaccinium alaskaense Howell
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