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The following divisions have been established among Rosaceous plants : 

 1. § PoTENTiLLEiE. Cinque/oils. 



§ Potentilhe, Juss. Gen. 337. (1789.)— § Dryadeae, Vent. Tabl. 3. 349. (1799) ; 

 Dec. Prodr. 2. 549. (1825.)— Fragariacea;, Rich, in JYestl. Potentill. 

 (1816) ; Lindl. Synops. 90. (1829.) 



Fruit consisting either of small nuts or acini, arising from a common recep- 

 tacle, and invested with a dry permanent calyx. Calyx either 4- or 5-cleft, 

 sometimes bearing- bracteolce on its tube equal in number to the segments, and 

 alternate with them. Petals 5. Seed solitary, erect, or inverted. — Mostly 

 herbaceous plants, very seldom shrubs; leaves usually compound; stipules 

 adhering to the petiole. 



Examples. Potentilla, Fragaria, Geum. 



2. § RosevE. True Roses. 

 § Rosa;, Juss. Gen. 335. (1789.)— § Rosa?, Dec. Prodr. 2. 596. (1825) ; Lind. 



Synops. 99. (1829.) 



Nuts numerous, hairy, terminated by the persistent lateral style, and en- 

 closed within the^fleshy tube of the calyx, which is contracted at its orifice, 

 where it is surrounded by a fleshy disk. Seed suspended. Sepals 5. Petals 

 5. Stamens indefinite. — Shrubs, with prickly or naked stems. Leaves pin- 

 nate. Flowers red, white, or yellow, usually fragrant. 



Examples. Rosa, Lowea. 



3. § Spir^ace^e. Spiraas: 



§ Spirteae, Juss. Gen. 339. (1789.)— § Ulmaria?, Vent. Tabl. 3. 351. (1799.)— 



§ Spiraeaceae, Dec. Prodr. 2. 541. (1825.) ; Lindl. Synops. 89. (1829.) 



Follicles several, invested by the calyx. Seeds from 1 to 6, suspended from 

 the inner edges of the follicles. — Shrubs or herbaceous plants. 

 Examples. Spiraea, Gillenia, Schizonotus. 



? 4. § NeuradejE. Neuradus. 

 § Neuradeae, Dec. Prodr. 2. 548. (1825.) 



Calyx 5-cleft, with a short tube adhering to the ovarium, the lobes some- 

 what incumbent or valvate in aestivation. Petals 5. Stamens 10. Carpella 

 10, combined in a 10-celled compressed capsule. Seeds solitary, obliquely pen- 

 dulous. — Herbaceous plants, native of sandy plains, suffrutescent at the base, 

 and usually decumbent. Leaves with 2 stipulae, downy, sinuate-pinnatifid, or 

 bipinnatifid. Seeds germinating in the capsule. 



Example. Neurada. 



Is not this rather a tribe of Ficoideae, as has been suggested by M. de Jus- 

 sieu ? to which, however, the want of albumen, the form of the embryo, and 

 the texture of the leaves, are objections. Dec. Prodr. 2. 548. 



LXXIV. POMACE^E. The Apple Tribe. 



Rosacbje, § Pomaceae, Juss. Gen. 334. (1789) ; Dec. Prodr. 2. 626. (1825.)— Pomaces, Lindl. 

 in Linn. Trans. 13. 93. (1821) ; Synops. 103. (1829.) 



Diagnosis. Polypetalous dicotyledons, with perigynous indefinite stamens, 

 ovaria adhering more or less to the calyx, and alternate stipulate leaves. 



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