ORDEK 44. ROSACE^E. 105 



at toi), angular ; Ifts. 3 5, ovate, acuminate, serrate; petioles prickly; calyx acumi- 

 nate ; raceme leafless, O0-flow<5red ; fruit ovoid, small-grained, sweet. Thickets. 3 6f. 

 Fruit black, in August. 

 ft. froniToBu*. Lawton B. Smoothish ; rac. leafy at base, short ; fr. subglobous, 



large-grained, very acid. Fields and gardens. 

 y. IntinU'iisuy. Trailing; leaves smaller ; peduncles few-flowered. 



It R. cuiieltolfus Ph. Sand B. Pubescent; Ivs. 3-foliate ; Ifts. wedge-obovate. en- 

 tire at base, dentate above ; racemes few-flowered, loose. Sandy woods, L. I. to Pla. 

 2 3f. Pet. white, thrice longer than calyx. May, June. 



3 It. liiapidus L. Hispid with retrorse bristles; Ivs. 3-foliate, smooth, green both 

 nide* ; Ifts. obovate, thickish, persistent ; fls. and fr. small, corymbed, on filiform 

 pedicels. Damp woods. 8 7f long. Fruit sour. May, June. 

 (3. xrfimiiM. Lvs. oblanceolate ; fruit red. (R. setosus Bw.) 



I U. fanadeiisis L. Northern Dewberry. Slightly prickly ; Ivs. 3 (rarely 5)-foliate ; 

 Ifts. elliptic or rhomb-oval, acuminate, thin ; ped. long, hardly in clusters ; fruit large, 

 black, very sweet in August. Stony fields, North. 



5 II. trivially MX. Southern Dewberry. Prickly and bristly; Ivg. 3-5-foliate, thick, 

 ovate-oblong or oval ; ped. 1-3-flowered ; sep. obtuse, reflexed. South. 



G R. odoratus L. Mulberry. St. erect or reclining, unarmed, glandular-pilous ; Ivs. 

 palmately 3-5-lobed, middle lobe longest, unequally serrate ; flu. large, in terminal 

 corymbs ; pet. orbicular, purple. Woods : common. 3 5f. Fr. red, sweet, in Aug. 



7 R. Nutkanus Mocino. Somewhat pilous ; Ivs. broad, 5-lobed, lobes nearly equal, 



coarsely serrate ; ped. few-flowered ; sep. long-acuminate, shorter than the very large, 

 round-oval, white petals. Mich., Wis. to Oreg. 5 7f. 



8 R. Channemorus L. Cloudberry. Herbaceous, dioecious ; st. decumbent at base, 



erect, unarmed, 1-flwd. ; Ivs. mostly but 2, cordate reniform, rugous, with 5-rounded 

 lobes., serrate ; sep. obtuse ; pet. obovate, white. White Mts. If. June. 



9 R. trlflorus Mich. IJranehes herbaceous, green; Ivs. 3- or 5-foliate; Ifts. nearly 



smooth, thin, rhombic-ovate, acute, odd one petiolulate ; slip, ovate, entire ; pet. erect, 

 oblong-obovate. Hilly woods. N. Fruit few-grained, dark red. 



1 R. strlgosus MX. Wild Red Raxpberry. St. strongly hispid ; Ivs. pinnately 3- or 

 5-foliate ; Ifts. oblong-ovate or oval, obtuse at base, canescent-tomentous beneath, odd 

 one stalked; cor. cup-shaped, white. Old fields, N. Common. Fruit red. 



1 1 R. occidental!* L. Black Raspberry. Thimble-berry. St. glaucous with bloom, 

 long, recurved, prickly ; Ivs. pinnately 3-foliate; Ifts. ovate, acuminate, hoary-tomcn- 

 tous beneath, lateral ones sessile ; pet. shorter than sep. ; fr. blk. Rky. fields and gard. 



12 R. IDJEUS. Garden R. Hispid or prickly; Ivs. pinnately 3-5-foliate ; Ifts. rhomb- 

 ovate, acuminate, hoary-tomentous beneath ; sep. hoary-tomentous, pointed, longer 

 than the white petals ; fruit red, white, or yellow. ? % 



1 3 R. ROS^EFOLIUB. Bridal Rose. Prickles straight ; Ivs. pinnately 3-7-foliate ; Ifts. 

 lance-ovate, doubly serrate, velvety ; flowers large, white. Mauritius. 



8. DALIBARDA, L. FALSE VIOLET. Calyx inferior, deeply 5-6- 

 parted, spreading, 3 of the segm. larger. Pet. 5. Sta. oo. Sty. 5 8, long, 

 deciduous. Ach. nearly dry. [^ Lvs. undivided. Scapes 1-2-flowered. 



D. repens L. Low, pubescent, bearing creeping shoots ; Ivs. simple, roundish-cordate, 

 crenate ; stipule linear-setaceous ; calyx spreading in flower, erect in fruit. V Damp 

 woods, Penn. to Can. 2 12'. Scapes with 1 small white flower. June. 



9. DRYAS integrifolia, Valil. On the White Hills of N. H. Prof. 

 Peck (Pursh). On Pike's Peak, Colorado. (A. H. Thompson.^ 



10. GEUM, L. A YENS. Calyx 5-cleft, with 5 alternate segments or 

 liractlets smaller and exterior. Pet. 5. Sta. oo. Ach. oo, aggregated 



