OF THE WASATCH REGION 41 



sepals. Stamens about twice as long as petals and shorter than 

 sepals. Berry smooth and green, becoming wine-colored when 

 fully ripe. Along mountain streams. April-June. 



2. R. an re 11 in Pursh. Missouri, Golden or Buffalo Currant. 

 Stem 5-12 ft. high ; 'smooth and thornless. Leaves fascicled, 

 3-5-lobed, the upper lobe wedge-shaped. Flowers in leafy 

 racemes: yellow (or the petals tinged with red). Berry smooth; 

 edible; either black or amber-colored when ripe. Cultivated 

 and along streams. April-June. 



3. R. Hmlsonianum Richards. (R. petiolare Dougl.) Stems 

 light-colored, erect, 3-6 ft. high. Leaves thin, rather large, on 

 slender petioles; round-cordate and 5-lobed (resembling maple- 

 leaves) ; resinous-dotted on the under surface. Racemes erect. 

 Flowers whitish. Ovary with sessile glands. . Berry black; 

 globose; glandular. Strongly and unpleasantly scented. Along 

 mountain streams. May. 



4. R. cereum Dougl. Mountain Red Currant. A small thorn- 

 less, scraggly bush, usually resinous-dotted and glutinous. Bark 

 grayish -tinged or sometimes dark-brown. Leaves small (aver- 

 aging % inch in diameter); round-kidney-shaped with crenate 

 margins. Racemes short, umbel-like, more or less drooping, 

 few-flowered. Calyx pinkish or sometimes waxy-white or 

 greenish ; its tube long-cylindric, much longer than the berry. 

 Fruit insipid, often glandular-pubescent. Among rocks on 

 exposed mountain-sides. May-July. 5,000-11.000 ft. 



5. R. viscosissimum Pursh. Stem 3-5 ft. high; with reddish, 

 shreddy bark. Leaves large, viscid-pubescent; heart-shaped 

 with rounded lobes. Inflorescence a few-flowered, corymbose, 

 ascending raceme; conspicuously bracted. Calyx-tube pro- 

 longed above the ovary. Flowers dull-white or greenish or 

 purplish-tinged. Berries black; glandular; without a bloom. 

 Mountain slopes. 



ROSACE-ffi. Rose Family. 



Herbs, shrubs or trees with alternate or fascicled 

 usually stipulate leaves. .Flowers perfect, regular, often 

 showy; usually with many distinct stamens borne on 

 the 5-sepaled calyx. Petals borne on calyx; as many 

 as the sepals. Carpels 1-many; distinct or united. 



Ovary "superior" or half-"inferior." 

 Carpel 1; shrubs or small trees. 



Petals none; calyx petal-like 1. Cercocarpus 



Petals evident; calyx green. 



Leaves fascicled, evergreen; fruit an 



achene 2. Pursliiu 



Leaves alternate, deciduous; fruit a 



drupe 3. Primus 



Carpels more than one. 



Shrubs or small trees. 



Leaves small, leathery, fascicled, eyer- 



green 4. Cownnin 



Leaves larger, not leathery; alternate, de- 

 ciduous. 



