CALTCIFLOR^. 



533 



Natural Order 82. Rosacea. — The Rose Order. — General 

 Character. — Trees, shrubs, or herbs. Leaves simple (Jig. 288), 

 or compound (Jig. 355). alternate (Jig. 266), usually stipulate 

 (Jigs. 288 and 355). Flowers regular, generally hermaphro- 

 dite (Jigs. 916 — 919), rarely unisexual. Calyx monosepalous 

 (Jigs, 462 and 917), with a disk either lining the tube or 

 surrounding the orifice, 4- or 5-lobed, when 5, the odd lobe 

 posterior (Jig. 916), sometimes surrounded by a whorl of bracts 

 forming an involucre or epicalyx (Jig. 441). Petals 5 (Jigs. 

 462/). and 916), perigynous, rarely none (Jig. 921). Stamens 

 definite (Jig. 921), or numerous, perigynous (^ys. 916 — 918); 

 anthers (Jig. 920) 2-celled, innate, dehiscing longitudinally 

 Ovaries 1 (Jig. 921), 2 (Jig. 532), 5, or numerous (Jigs. 916 

 and 917); 1-ceUed (Jigs. 921 — 924), usually apocarpous and 

 superior (Jigs. 916, 917) ; or sometimes more or less combined 

 together, and with the tube of the calyx, and thus becoming in- 

 ferior (Jig. 919); styles basilar (Jigs. 624 and 921), lateral (^^. 

 623), or terminal (Jig. 918) ; ovules 1 (Jigs. 923 and 924), or 

 few (Jig. 919). Fruit various, either a drupe (Jigs. 677 and 678), 

 an acheenium (Jig. 921), a folUcle, a dry or succulent etoerio 

 (Jigs. 591 and 645), a cynarrhodum (Jig. 439), or a pome (Jigs. 

 459 and 702). Seeds 1 or few, exalbuminous ; embryo (Jig. 922), 

 straight, with flat cotyledons. 



Diagnosis. — Trees, shrubs, or herbs, with alternate leaves 



Fig. 921. 



Fig. 920. Anther with part of the filament of a species of Huhu.s Fig. 921. 



Vertical section of the flower of Alchemill a Fig. 922. Vertical section 



of the fruit of the Cherry (Cera*w«). ep. Epicarp. we. Mesocarp. en. En- 



docarp, within which is the seed and embryo Fig. 923. Vertical section 



of an achaenium of the Rose Fig. 924. Vertical section of the ovary o, 



of a species of Jiubzis, with the ovule, ov. 



Flowers regular. Calyx 4 — 5-lobed; when 5, the odd lobe pos- 

 terior. Petals 5 or none. Stamens perigynous, distinct ; an- 

 thers 2-celled. Carpels one or more, usually distinct, or some- 

 M M 3 



