ROSACEAE (rose FAMILY) 



245 



3. FENDLERA Eng. & Gray 



Erect iiitricately-branched shrub, with small opposite exstipulate leaves 

 and large, flowers terminal on the branchlets. Calyx-tube 8-ribbed. Petals 

 ovate-deltoid, unguiculate, emarginate. Stamens 8; filaments 2-forked at the 

 apex, the lobes divaricate and extended beyond the cuspidate anther. Cap- 

 sule crustaceous. Seeds reticulate-winged below. 



1. Eendlera rupicola Eng. & Gray, Smithson. Contrib. 3: 77. pi. 5. 1852. 

 Pubescent or gkbrate, branches terete, striate: leaves deciduous, subsessile, 

 oblong, entire, 3-nerved at the base: flowers solitary or in 3-flowered cymes, 

 white, short-peduncled.— Southwestern Colorado and southward. ; 



1. Cercocarpus, 

 2.- Cowanla, 



3. PuTshia. 



4. Coleoeyne. 



5. HolodiscuB. 



54. ROSACEAE Juss. Rose Family 



Herbs or shrubs with alternate stipulate leaves (the stipules often early 

 deciduous) and perfect regular flowers. Calyx free from or adnate to the 

 carpels, usually 5-lobed and often with 5 alternating bractlets. Petals of the 

 same number, or wanting, distinct. Stamens perigynous or rarely hyppgy- 

 nous, usually many, sometimes as few as 5. Carpels 1-many, distinct, or 

 adnate to the calyx; ovary iTcelled, with either terminal or lateral style. 

 Fruit an achene or a few-seeded foUicle. 



Fruit not inclosed in a hollow receptacle, i. e., the calyx not coo- 

 stricting over the fruit. 

 Shrubs; pistils few (usually 1 or 2, rarely 5-8). 

 Carpels becoming dry achenes. 

 i Ilowers solitary, or in fascicles of 2-3^ 

 Style becoming elongated and plumose. 

 ' Leaves not glandular-dotted; petals wanting 



Leaves glandular-dotted; peteils yellow . 

 Style not elongating. ' 



Leaves fascicled; petals yellow ... 

 Leaves opposite; petals wanting , . . 



Flowers panicled • . 



Carpels becoming few-seeded follicles. 

 Leaves simple. 



Erect and branching shrubs. 



Flowersin simple corymbs . . . 

 Flow^s in dense panicles 

 Depressed-caespitose shrubs. 

 Flowers spicate; leaves rosulate 

 Flowers solitary-terminal; leaves imbricated 

 Leaves compoimd. 



Pinnate; the pinnae small, nmnerous , 

 Bitemate; the leaflets large 

 Shrubs or herbsf pistils numerous. 

 Woody, at least at base. 



Fruit dry tailed achenes; leaves simple. 

 Flbwers solitat'y; plant caespitose 

 iFlowerssubpanicled; plant erect 

 , . ; Fruit of sm£^ drupelets crowded on a spongy receptacle. 

 Leaves simple; stem unarmed . 

 Leaves compoimd; stem prickly . 

 Fruit dry achenes, not tailed; leaves compo^ind 

 Wholly hterbaceous; pistils becoming dry achenes.' ■ 



I Leaves compound or ternately cleft; style deciduous from the 

 achene. 

 Trifoliblate; style lateral. 



Receptacle dry; flowers yellow . ; . , 

 1 , Receptacle becoming fleshy; flowers white . 

 , ,Ternately many-cleft into linear divisions ,, , . 

 Pinfaately or digltately compound. 

 Receptacle dry. 

 Leaflets pinnate. 



Style basal; leaflets opposite ...i . 



Style lateral; leaflets interrupted ' . , . , 



Leaflets pinnate or digitate; style terminal or nearly so. 



Stamens inserted near throat of calyx, distant from 



I the receptacle , , 



6. Physocarpus. 



7. Spiraea. 



8. Petrophytbn. 



9. Kelseya. 



10. Chamaebatiaria. 



11. Aruncus. 



12. Dryas. '^ 

 13^ Fallugia. 



14. Bbssekia. 



15. Rubus. 



16. Dasiophoca. 



17. Sibbaldia. • 



18. Fragania. r 



19. Chama^rhodps. 



20. Drymocallis, 



21, Argentina. 



22.. Uorkelia. 



