250 ROSACEAE (ROSE FAMILY) 



lanceolate, acuminate, sharply and laciniately doubly toothed, the terminal 

 one broadest: panicle large and compound, pubescent: filaments long-exserted : 

 carpels 3-5, smooth. [A. Aruncus (L.) Karst.] Across the continent; rare in 

 our range. 



12. DRYAS L. ALPINE AVENS 



Dwarf and matted slightly shrubby plants, with simple toothed leaves and 

 large solitary flowers on slender scapes. Calyx open, shallow-salverform, 

 8-9-parted. Petals 8-9, longer than the calyx. Carpels many (indefinite), 

 inserted on the dry receptacle; style terminal, persistent, elongated and plu- 

 mose in fruit. 



1. Dryas octopetala L. Sp. PI. 501. 1753. Leaves oblong-ovate, coarsely 

 crenate-toothed, obtuse at each end, clothed with a white tomentum beneath, 

 the veins prominent, the margins revolute: sepals linear. Alpine; high peaks 

 of Colorado and northward throughout British America to Greenland. 



13. FALLUGIA Endlich. 



A low undershrub with pinnately lobed leaves and white showy flowers 

 somewhat panicled on long peduncles. Calyx-tube villous within, the 5 lobes 

 with alternate linear bracelets. Petals 5. Stamens numerous, inserted in a 

 triple row upon the margin of the turbinate calyx-tube. Carpels glabrous, 

 included ; the style lateral, very villous at base, twisted, exserted, persistent. 



1. Fallugia paradoxa (Don.) Endlich. Gen. PL 1246. 1840. Much branched 

 with somewhat virgate slender branchlets; epidermis white, persistent: leaves 

 scattered or fascicled, somewhat villous, cuneate and attenuate into a linear 

 base, pinnately 3-7-cleft above. [F. acuminata (Wooton) Rydb.] From Colo- 

 rado to California and southward into Mexico. 



14. BOSSEKIA Necker. FALSE RASPBERRY 



Low unarmed shrubs, with simple alternate petioled ribbed and lobed 

 leaves with cordate bases. Flowers showy, solitary or in small panicles ; re- 

 ceptacle flat. Sepals ovate or ovate lanceolate, acuminate or with foliaceous 

 tip. Petals large, oval or obovate, white (or rarely pink). Stamens nu- 

 merous. Carpels many, on a nearly flat scarcely spongy receptacle, more or 

 less pubescent and fleshy, the carpellary wall developing either a dry cap or 

 a wing; the deciduous styles clavate and nearly terminal. 



Flowers solitary 1. B. deliciosa. 



Flowers panicled 2. B. parviflora. 



1. Bossekia deliciosa (James) A. Nels. Shrub 7-12 dm. high: branches, 

 young leaves, and calyx tomentose-pubescent or puberulent: leaves reniform- 

 orbicular, rugose, more or less 3-5-lobed, finely serrate-toothed: flowers 

 white, about 5 cm. broad: sepals with a dilated acumination: fruit purplish, 

 large, glabrous^ the carpels slightly winged; the "flavor not agreeable to the 

 human palate." Rubus deliciosus James. (Oreobatus deliciosus Rydb. Bull. 

 Torr. Bot. Club 30: 275. 1903.) Canons in the Colorado mountains. 



2. Bossekia parviflora (Nutt.) Greene, Leaflets 1: 211. 1906. Stems 

 1-2 m. high; dark green and smooth or more or less glandular-pubescent, 

 becoming l-nm-n and shreddy: leaves palmately and nearly equally 5-lobed, 

 cordate at has.-, unequally serrate, 10-25 cm. broad, glabrous or somewhat 

 tomentosr, the veins beneath as well as the ^petioles and peduncles usually 

 more or l->s t.i>i>il with gland- tipped hairs: flowers white, 3-5 cm. broad: 

 calvx densely tomentose: carpels very numerous, tomentose: fruit red, large, 

 and pleasantly flavored. R. Nutkanus Moc. (Rubacer parviftorum Rydb. 

 1. c. 275.) SALMON BKKKY. Colorado, northward and westward. 





