428 



DICOTYLEDONS. 



branch, and the filaments bear unilocular anthers ; the five petal-stamens bear 

 bilocular anthers.] 



B. Schizocarps, with 1-seeded fruitlets, most frequently nut- 

 like and reniform (Figs. 449, 451). 



3. MALVE^, MALLOW GROUP. The carpels are arranged in one 

 whorl (Fig. 449) ; the number of stylar-branches equals that of 

 the carpels ; fruitlets 1-seeded, reniform, iridehiscent, but detach- 

 ing themselves from one another and from the persistent central 

 column (Figs. 450, 451). Malva has an epi calyx of 3 free leaves. 

 A flower with 2 suppressed bracteoles is situated in the axil of the foliage- 

 leaves ; one of these supports a homodromous foliage-shoot which forms a 

 repetition of the main axis, the other an a,ntidromous flower which continues 

 the branching as a unipared scorpioid cyme. Alt/leva, Rose Mallow, has 

 an epicaJyx of 69 leaves united at the base. Lav atera, Sida, Anoda, 

 Bastardia, etc., have no epicalyx. 



418. 450. 451. 



FIGS. 448- 1 51. Malv a silvestris. 



FIG. 448. The flower after removal of the perianth (|). FIG. 449. The fruit (*). 



FIG. 450. A fruiilet (f). FIG. 451. The same in longitudinal section. 



4. URENK^;, have always only 5 carpels arranged in 1 whorl, with 1 ovule 

 in each loculus, and the fruit a schizocarp, generally with nut-like fruitlets 

 provided with warts and hooks ; but in some they dehisce by 2 valves (capsule). 

 They differ principally from the other groups in having .twice as many stt/htr- 

 branches as carpels ; the staminal tube is naked at the point, blunt or 5 -toothed. 

 The genera Urena, Pavonia, Malachra, Malvaviscus (with berry-like fruits) 

 belong to this group. 



II. Carpels arranged in a spherical head in five groups opposite 

 to the" petals. 



5, MALOPE^E, differ from all the others in having a large number of fruitlets 

 arranged irregularly in a round head, and separating considerably from each 



