Fig. 49. — 

 Stipules 

 of Rosa 

 acicularis. 



/ 



ROSACE^aj 



2. S. acicularis, Lindl. 



Stem 1-4 ft. high, very prickly; stipules 

 dilated, glandular-ciliate or resinous; leaflets 

 3-7, oblong, sessile; flowers mostly solitary. 

 Thickets, Man.-AIta., not well defined. 



3. R. pratincola, Greene. 



Stems low, very prickly ; stipules narrow, 

 more or less glandular-toothed; leaflets 7-11, 

 elliptical to oblanceolate, prominently veined ; 

 flowers pink turning white, usually in corymbs. 

 (B. arkansdna. Porter.) Prairies, Man.-Alta. 



67 



FiQ. 60. — 

 Stipules of 

 Rosa pra- 

 tincola. 



11. PYRUS. 



Calyx urn-shaped, 5-eleft; petals 5, roundish; stamens numerous; 

 styles 2-5 ; fruit a pome, either large and fleshy or small and berry- 

 like. Trees or shrubs with flowers in umbel-like^ or corymb-like 

 cymes. 



1. P. americana, (Marsh.) DC. American Moitntain Ash. 



Leaves odd-pinnate with 13-15 leaflets, lanceolate, sharply serrate; 

 flowers small, in large flat cymes; fruit berry-like, bright red. Damp woods, 

 Eastern Man. 



12. CRAT.ffiGUS. Hawthorn. 



Calyx 5-cleft ; petals 5, almost round; stamens 5-25, in 1-3 rows; 

 carpels 1-5; styles 1-5, distinct, persistent, usually somewhat 

 hairy around the base; fruit a small 

 red or yellow pome containing 1-5 

 horny nutlets. Thorny shrubs or 

 small trees with pink or white flowers 

 in corymbs, and simple leaves usually 

 lobed. 



Crattegus coccinea. 



1. C. coccSsea, L. 



Leaves on slender petioles, broadly 

 ovate, tapering towards the apex to a 

 'sharp point, sharply incised or serrate, truncate or sub-cordate at the base; 

 stamens^ about 10; fruit reddish brown when ripe. Very variable. In 

 thickets west almost to the Rooky Mts. 



13. AMELANCHIER. Junbberrt. 



Calyx tube bell-shaped, 5-cleft; petals 5, usually obovate to 

 oblong; stamens numerous; styles 5, united part of their length; 



