IfMSAII. i ROSA] 



Alliance X LIT. EOSALES. — Tin: Rosal Alliance. 



Diagnosis. — Perigynous E s, with monodichlamyd* 

 ral ;./■■ ... 



embryo with little or no album* 



The sequence of affinities seems to be broken when Daphnals an stationed next 

 Rosals ; but if Calycanths are regarded as the equivalent among Rosals of Plume 

 Nutmegs among Menispermals, the transition is not so violent; for the relation ol 

 Laurels to Plume Nutmegs is usually admitted, and therefore their affinity to Caly- 

 canths must als.i be conceded. In fact, in Calycanths we have the apetalous structure 

 and aromatic qualities of Laurels combined with the peculiar characters of Rosew 



The Rosal Alliance is in many instances known by its indefinite stamens, but that 

 character is not found in any large number of Leguminous plants, and is departed from 

 even among Roseworts themsi lv< s. Their apocarpous fruit, small number ol - 

 amygdaloid embryo, an- better characteristics. The obliquity of the carpels will in all 



instances show that those organs are simple, and a part of a system of separal not 



consolidation, and by this circumstance Roseworts are clearly known from Daplu 

 which tin.- fruit, although simple in appearance, ha- probably a compound structure. 



Rosals touch Ficoidals by Sanguisorbs, and Saxifragals by Roseworts tl 



oera of tin- latter have nut uhfrequently been confounded bj even good B itanists 

 with those of Saxifrages. The small embryo and albumen of tin- latter offer, li"" 

 a dear mark of distinction. 



Natural Orders "i Ros 



Flowt >s const ■ n ~. p.. vr .« 

 J 



/ lypetalous (or apeta , ous . quit* regular.] 



& th, ba» of tin 1 208. Chri - 

 y J 



- m- legu- "I 

 hiir < • style pn .21 I 



tpex of Oi J 



Flowers polypetalous, regular, drupaa ■ qui solitary, 1 <,«/> p Rr] 



with tht styL proceeding from • J " 



Flowen polypetalous regular. < I I •mi P 



by tin ir back J ~ ' 



Flowers apetalous. Oatrpet solitary, inclosed in a hardened] | g 



calyx-tube forming a faJ» pericarp J " 



Flowers polypetalous. < \Jyx,and 

 or nearly so from each other J 



