6 9 



The West American Scientist. 



often forming extensive groves miles 

 in extent. The mesa back of San 

 Diego, near the normal school, is its 

 western limit, where it is only a small 

 shrub, but it extends east to Texas 

 and south to the Argentine republic. 

 PROSOPIS PUBESCENS Benth. 



The screw-bean is a characteristic 

 desert tree, slender, 15-20 feet high; 

 not rare from Riverside county south- 

 ward into Lower California, abund- 

 ant in Palm valley, not far from San 



Diego. 



HOSACEAE. 



Suborder Amvgdalete 



Genus PRCNUS Tonmefort, 



PRUNUS DEMISSA Walp. 



PRUNTJ.3 ILICIFOLIA Walp. "Islay;" ever- 

 green, or holly-Heaved cherry; attractive for 

 the beauty of its shining dark green foliage: 

 fruit dull red, of a delicate flavor, with a 

 kernel "allrnost equal in flavor to the almond." 

 A desirable ornamental shrub and useful as 

 a hedge plant. 



The holly-leaf cherry is a beautiful 

 dark evergreen shrub, yielding a 

 pleasant edible fruit. Useful for hedges 

 or orn«ment.£»l nlantinsr. 

 PRUNUS FASCICULATA A. Gray. 

 PRUNUS FREMONTI S. Watson. 



Suborder Pome;e 



Genus AMELANCHIER Medieus. 



A. ALNIFOLIA NL.ttali 



Shrub 3-8 feet high, glabrous through- 

 out or often more or less woolly-pubes- 

 cent; leaves broadly ovate or rounded, 

 occasionally oblong-ovate, obtuse at 

 both ends or acute, often somewhar cor- 

 date at base, serrate usually only toward 

 fee summit^- \'}4 inches long: racemes 

 short: calyx usually tomentose within: 

 peta's 3-12 lines long, narrowly oblong: 

 fr mostly 3^~K uicn m diameter. 



Cv 4 97, British Columbia-j 



t&eiius HETEllOMETiES J. Roemer. 

 HETKKOMELES ARBUTIF0L1A Rim. 



The California toyon, or tollon. is a 

 handsome evergreen shrub found 

 throughout the state, better known as 

 the Christmas berry, or California hol- 

 ly. The scarlet berries are borne in the 

 greatest profusion, and, ripening at 



70 



Christmas time, are extensively used in 

 decorating. The berries are said to 

 have formed an important article of 

 food with the Indians, and school chil- 

 dren frequently eat them: but, so far 

 as known, they are not otherwise util- 

 ized. They are not unpleasant to tl'.e 

 palate, having a healthy, bitterish by- 

 taste. The toyon' is more useful as a 

 hedge plant, doubtless, than for its 

 fruit. It ranks high as an ornament 1 

 evergreen, the dark foliage forming a 

 beautiful setting for the panicles of 

 white flowers. It appears in many 

 horticultural catalogues under the 

 name of Photinia arbutifolia. 



Suborder Rosacea 



CSe in 11s RUB US Linnaeus. 



RUBUS NUTKANUS. Mocino. Salmon- 

 berry, the West American Mayberry; a sin- 

 gularly beautiful fruit, varying in color from 

 a clear golden yellow to an orange red; de- 

 licious when served with sugar and cream. 

 RUBUS URSINUS C. & S. 



R vitifulius C-S Linna?a 2 10, cv 4 92 



Genus ALCHEMILLA Tournefort. 

 ALCHEMILLA ARVENSIS Scop. 

 Genus SPIRAEA Linnaeus. 



S discolor Pursh da 5 



Holodiscus discolor cv 4 91 



Genus ADENOSTOMA Hook & Am. 



ADENOSTOMA FASCICULATUM H.-G. 

 ADENTOSTOMA SPARSIFOLIUM Torr. 



Genus ROSA Tournefort. 



ROSA CALIFORNICA C. & S. 

 ROSA MINUTIFOLIA Engelm. 



Genus IVESIA Torrey & Gray. 



IVESIA BAILEYI S. Watson. 



Genus FRAGARIA Tournefort. 



FRAGARIA CALIFORNICA C. & S. 

 Genus CER.COCAR.PUS H. B. K. 



CERCOCARPUS PARVIFOLIUS Nutt. 



Genus PURSHIA De Cantlolle. 

 PURSHIA TRIDENTATA DC 



Kunzia tridentata Spreng Anleit ed 2, 2 869. 



Tigarea tridentata Pursh rl 1 333 (1814). 



Genus CHAMAEBATIA Bentlinm. 



CHAMAEBATIA FOLIOLOSA Benth. 



Genus CANOTIA Torrey. 

 CANOTIA HOLACANTHA Torr. 



Genus POTEIVTILLA Linnaeus. 



POTENT! LLA CALIFORNICA Greene. 



