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 Image: Basionym: Genus Basionym: Notes:
1. Arabis suksdorfii Howell Arabis suksdorfii Howell
2. Peucedanum gormanii Howell Peucedanum gormanii Howell
3. Article Article Pages Basionym: 284; Pages Full Article: unknown
4. Ribes howellii Greene Ribes howellii Greene
5. Pedicularis howellii A. Gray Pedicularis howellii A. Gray
6. Mertensia nutans Howell Mertensia nutans Howell
7. Draba howellii S. Watson Draba howellii S. Watson
8. Ranunculus triternatus A. Gray Ranunculus triternatus A. Gray
9. Article Article
10. Article Article
11. Article Article
12. Cnemidophacos reventiformis Rydb. Cnemidophacos reventiformis Rydb. one specimen image; one type description (pdf)
13. Cnemidophacos reventiformis (Rydb.) Barneby Cnemidophacos reventiformis (Rydb.) Barneby
14. Alsine simcoei Howell Alsine simcoei Howell
15. Alsine simcoei Howell Alsine simcoei Howell
16. Senecio adamsii Howell Senecio adamsii Howell
17. Alsine simcoei Howell Alsine simcoei Howell Alsine
18. Alsine simcoei Howell Alsine simcoei Howell Alsine
19. Arabis suksdorfii Howell Arabis suksdorfii Howell Arabis
20. Cnemidophacos reventiformis (Rydb.) Barneby Cnemidophacos reventiformis (Rydb.) Barneby Cnemidophacos
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