CONTENTS. 7 



Dicotyledones — Continued. rage. 

 Leguminosae — Continued. 



Parkinsonia 371 



Horse-bean; Ratama (Parkinsonia aculeata Linnaeus) 371 



Little-leaf horse-bean (Parkinsonia microphplla Torrey) 373 



Cercidium 375 



Palo verde ; green-bark aeaeia (Cercidium torreyanum (Wat- 

 son) Sargent) .. 376 



Dalea 37G 



Indigo bush (Dalea spinosa Gray) 377 



Olneya 37s 



Mexican ironwood {Olneya tesota Gray) 378 



Celastraceie 380 



Canotia 380 



Canotia (Canotia holacantha Torrey) 380 



Sterculiaceae 382 



Freinontodendron 382 



Fremontia (Fremontodendron californicum (Torr.) Coville)_ 382 



Anacardiaceae 384 



Rhus — Sumachs 384 



Mahogany sumach (Rhus integrifolia (Nutt. ) Bentham and 



Hooker) ___ 385 



Aeeracea? 3S6 



Acer — Maples 386 



Broadleaf maple (Acer macrophyllum Pursh) 387 



Vine maple (Acer cireinu turn Pursh) 389 



Dwarf maple (Acer (/labium Torrey) 392 



California boxelder (Acer negundo californicum (Torr. arid 



Gr.) Sargent) 396 



Hippocastanacese 398 



JEsculus — Buckeyes 398 



California buckeye (JEsculus califomica Nnttall) 398 



Rhamnaceae 400 



Rhanmus — Buckthorns , 401 



Evergreen buckthorn (RJiamnus crocea Nuttall) 401 



Cascara sagrada (Rhamnus purshiana De Candolle) 404 



Ceanothus — Myrtles 407 



Blue myrtle (Ceanothus thyrsiflorus Eschscholtz) 40!) 



Tree myrtle (Ceanothus arboreus Greene) 409 



Lilac (Ceanothus spinosus Nuttall) 111 



Cornaceae 412 



Cornus — Dogwoods and cornels 412 



Western dogwood (Cornus nuttaUU Audobon) 413 



Garryaceae 41G 



Garrya IP; 



Quinine bush [Carina elliptica Douglas) 416 



Ericaceae 1 18 



Arbutus — Madrofias 41 S 



MadmnM (Arbutus menziesii Pursh) 419 



Oleaceae 422 



Fraxinus — Ashes 422 



Leatherleaf ash (Fraxinus coriacea Watson) 423 



Oregon ash (Fraxinus oregona Nuttall) 425 



