22 ANALYTICAL KEY. 



Pistils more than one, or several-lobed, the ovaries united below 



the middle Resedace^e, 76 



Pistils several, their ovaries cohering in a ring around an axis, 



but separating in fruit Malyaceje, 98 



Pistils strictly one as to the ovary : the styles or stigmas may be several. 

 Leaves punctate under a lens with transparent dots. Hypericace^e, 83 



Leaves not punctate with transparent dots. 



Ovary simple, 1 -celled, with one parietal placenta. 



Leaves 2 - 3-ternately compound or dissected. Ranunculace^e, 34 



Leaves peltate, simply lobed. Podophyllum, in Berberidace^e, 52 



Ovary compound, 1-celled, with a central placenta. Portulacace^e, 97 

 Ovary compound, 1-celled, with 2 or more parietal placentas. 



Calyx caducous. Juice milky or colored. . . Papaverace^e, 58 



Calyx deciduous, of 4 sepals Capparidace.e, 75 



Calyx persistent, of 3 or 5 sepals Cistace^e, 80 



Ovary compound, several-celled. 

 Calyx valvate in the bud, and 

 Persistent: stamens monadelphous : anthers 1-celled. Malvace.e,*98 



Deciduous : anthers 2-celled Tiliace.e, 103 



Calyx imbricated in the bud, persistent. 



Shrubs : stamens borne on the base of the petals. Camelliace;e, 103 

 Aquatic or marsh herbs : ovules many, 



On 5 placentae in the axis. . . . Sarraceniace.e, 57 



On the 8-24 partitions. .... • Nyjiph^eace^;, 54 



2. Calyx more or less coherent ivith the surface of the {compound) ovary. 



Ovary 1 - 30-celled : ovules many, on the partitions : aquatic. Nymph.eace.e, 54 



Ovary 2 - 5-celled. 



Leaves alternate, with stipules Pomece, in Rosacea, 146 



Leaves opposite, without stipules. Philadelphus, in Saxifragaceje, 163 



Leaves alternate, without stipules. .... Styracace^e, 309 



Ovary one-celled, with the ovules parietal. 



Fleshy plants with no true foliage : petals many. . . Cactace^e, 184 

 Rough-leaved plants : petals 5 or 10 Loasace^e, 184 



Ovary one-celled, with the ovules rising from the base. Portulacaceje, 97 



1$. Stamens of the same number as the petals and opposite them. 

 Pistils 3 - 6, separate. Flowers dioecious. "Woody vines. Menispermace.e, 51 

 Pistil only one. 



Ovary one-celled : anthers opening by uplifted valves. Berberidace.e, 52 

 Ovary one-celled : anthers not opening by uplifted valves. 



Style and stigma one : ovules more than one. . Primclace.e, 313 



Style one : stigmas 3 : sepals 2 : ovules several. Porttjlacace^e, 97 



Styles 5 : ovule and seed only one. . . . Plumbaginace.e, 312 

 Ovary 2 - 4-cellcd. 



Calyx-lobes minute or obsolete : petals valvate. . . Vitace.e, 112 

 Calyx 4-5-clcft, valvate in the bud : petals involute. Rhamnace-e, 113 



