PLATE THREE. 



Fig. 20. Oreoxys humilis Kaf., from Pikes Peak (14,000 feet altitude); natural size. 



21. Artemisia scopulorum Gr., from James Peak (13,000 feet altitude); natural size. 



22. Kalmia glauca Ait. var. micro pliylla Hook., from Thompsons Canyon on Longs Peak (10,700 feet altitude); 



natural size. 



23. Androsace subumbcllata Small, from Grays Peak (12,500 feet altitude); natural size. 



24. Primula angustifolia Torr., from Thompsons Canyon on Longs Peak (10,700 feet altitude); natural size 



25. Polemonium viscosum Nutt., from Longs Peak (13,000 feet altitude); natural size. 



