304 BOTANICAL INFORMATION. 



Helenium, Gallardia, Calliopsis, Blepharipappus, Bidens, He- 

 lianthus ! — Anthemidece -, Cotula Artemisia, Achillea! — Am- 

 brosiacece; Xanthium, Iva, Ambrosia! — Berberidem ; Mahoniaf 

 — Rosacea ; Poterium, Potentilla, Geum, Rubus, Rosa, Spiraea, 

 Purshia, Crataegus ! — Leguminosce -, Lupinus, Hosackia, Vicia, 

 Psoralea, Homalobus, Glycirrhiza .' — Amentacece; Populus, 

 Salix, Corylus, Betula, Alnus ! — Coniferce ; Pinus, Abies, 

 Larix, Juniperus ! — Saxifrages ; Saxifraga, Heuchera ! — 

 Rhamni ; Rhamnus, Ceanothus ! — Polygoncte; Eriogonum, 

 Rumex, Polygonum! — Ranunculacea? ; Delphinium, Anemone, 

 Clematis ! — Single representatives of families ! Abundant is 

 Lewisia ofLewisiete ! — Mahonia of Berberideee .' — Philadelphus 

 of Myrtacece — Comandra of Thymelece ! — Clintonia of Cam- 

 panulaceae .' — Fedia of Valerianeae ! — Sambucus of Sambu- 

 cine<B ! — Hedyotis of Hedyotideae (rare) — Arceuthobium of Lo- 

 I'anthece! — Cleome of Capparideee ! — Sida of Malvaceae ! — 

 Turneraceee ; Bartonia .' — Sedum of Crassulacea ! — Rhus of 

 Terebinthace<e ! 



No Papaveracece I Urticece ! Violaceee ! Vites ! Solanea ! 

 Jasminea ! Amaranthece ! Eleagni ? ! Oxalidem ! 



Cactus ! Cnicus ! Euphorbia ! Fremontia ! Galium I Gen- 

 tiana ! Hypericum ! Plantago I Ribes ! Symphoricarpus ! Mar- 

 silea, and Allionia ! are all single representatives of families 

 not very abundantly met with. 



Of Graminea, and other endogenous plants : are abundant : 

 Of Festucacea ; Festuca, Koeleria, (Bromus) ; ! — Hordeacem ; 

 Hordeum, Triticum, Elymus .' — Asphodeli ; Gamassia, Allium, 

 Broduea ! — Liliacece ; Calochortus, Frittillaria, Erythronium .' 

 — Iridece ; Sisyrinchium, Iris ! — Single representatives of 

 their respective families are the genera Alisma ? Panicum ! 

 Agrostis! and Narthecium ! — Cyperoideae very abundant, but 

 only one species of Cyperus ! 



Vivid colours mark this region. — Blue and purple east- 

 ward ; and scarlet with golden-yellow westward. A glau- 

 cous green reigns in the herbage over the plains ; a deep 

 saturated green in the valleys. 



We now divide this whole arid basaltic region into sub- 

 divisions or regions, as follows : 



