McCall

Aphyllon uniflorum var. occidentale Greene

Orobanchaceae · Davidson C. 11378

Aulospermum glaucum (Nutt.) J.M.Coult. & Rose

Apiaceae · Davidson C. 11362

Erigeron compositus Pursh

Asteraceae · Davidson C. 11365

Glossopetalon spinescens A.Gray

Crossosomataceae · Davidson C. 11369

Lithospermum ruderale Douglas ex Lehm.

Boraginaceae · Davidson C. 11371

Mentzelia albicaulis (Douglas ex Hook.) Douglas ex Torr. & A.Gray

Loasaceae · Davidson C., Christoph S.R. 11363

Penstemon albertinus Greene

Plantaginaceae · Davidson C. 11367

Penstemon wilcoxii Rydb.

Plantaginaceae · Davidson C. 11357

Phacelia heterophylla Pursh

Hydrophyllaceae · Davidson C. 11370

Phlox longifolia Nutt.

Polemoniaceae · Davidson C. 11375

Physocarpus malvaceus (Greene) Kuntze

Rosaceae · Davidson C. 11364

Plectritis congesta (Lindl.) DC.

Caprifoliaceae · Davidson C. 11377

Sedum valens Björk

Crassulaceae · Davidson C. 11380

Silene oregana S.Watson

Caryophyllaceae · Davidson C. 11366