ROSALES.] 



TflOSACE^:. 



563 



Order CCXIII. ROSACE^E.— Roseworts. 



Ros&cesp, Jim. Gen. 334. in part. (1789); DC. Prodr. 2. 525 ; Endl. Gen. cclxxii.; Mei.tner Gen v 101 — 

 § Sanguisorbea?, Jim. Gen. 336. (1789); DC. Prodr. 2. 588; Ed. Pr. p. 148.— Cliffortiacea Martins 

 Conspectus, No. 216.— Neuradeae, DC. Prodr. 2. 548. (1825); Martins Conspectus, No 314 '(1835) — 

 Grieleae, Sweet. ' '' 



Diagnosis.— i?osaZ Exogens, tvith poJypetalous flowers, and cai^els loth free from thr 

 calyx, and quite or nearly so from each other. 



Herbaceous plants or shrubs. Leaves simple or compound, alternate, often \vith 

 2 stipules at theii' base, occasionally dotted. Flowers variously an-anged, generally 6, 



Fig. CCCLXXX 



occasionally ,^ ? by abortion. Calyx 4- or 5-lobed, with a disk either lining the tube 

 or surrounding the orifice ; the fifth lobe next the axis. Petals 5, perigynous, equal 

 or 0. Stamens definite m number or 00, arising from the calyx, just within the petals, 

 in aestivation cui'ved inwards ; anthers innate, 2-celled, burstmg longitudinally. Ovaries 

 superior, either solitary or several, 1 -celled, sometimes cohering into a plui'ilocular 

 pistil ; ovules 2 or more, anatropal, suspended, very rarely erect ; styles lateral ; 

 stigmas usually simple, and emarginate on one side. Fruit either 1 -seeded nuts, or 

 acini, or follicles containing several seeds. Seeds suspended, rarely ascendmg. 

 Embryo straight, with a taper short radicle pointing to the hilum, and flat cotyledons. 

 Albumen 0. 



This Order furnishes the best of all analogies with the hypogynous sub-class, present- 



Fig. CCCLXXX.— 1. Spiraea ulmaria ; 2. flower of Fragaria vesca; 3. a section of it ; 4. section of 

 the flower of a Spirsea. 



o2 



