Tl ANALYTICAL KEY. 



Pistils scvcral-lobcd, the ovaries united below the niiiklle. Resedace^e, 76 



Pistils several, their ovaries cohering in a ring around an axis. Malvace.e, 98 

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



Leaves punctate under a lens with tyansparent dots. HvPEKifACEiE, 83 



Leaves not punctate with transparent dots. 



Ovary simple, 1 -celled, 2-ovuled Rosacea, 146 



Ovary simple, 1-celled, with one p^ietal many-ovulcd placenta. 



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



Leaves peltate, simply lobed. Podophyllum, in Berbkkidace.k, 52 



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

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



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



Calyx deciduous, of 4 sepals CAPPARiDAeE-E, 75 



Calyx persistent, of 3 or 5 sepals Cistaceje, 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^b, 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 placentte in the axis. . . . Sarraceniace^, 57 



On the 8 -24 partitions. .... Nymph^ace.e, 54 



2. Cnhjx more or Jess coherent with the surface of the {compound) orary. 



Ovary 10-30-celled : ovules many, on the partitions : aquatic. NrMPiiiEACEiE, 54 



Ovary 10-celled: cells 1-ovuled. . . . Amelanchier, in Rosacea, 146 



Ovary 2-5-celled., 



Leaves alternate, with stipules Pomcre, in Rosace-t;, 146 



Leaves opposite, without stipules. Philadclphus, in Saxifragace.t:, 1G3 

 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^, 184 



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



B« Stamens of (lie same nnmher as the petals and opposite them. 

 Pistils 3 - 6, separate. Flowers dioecious. "Woody vines. Mexisperiiace.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. . Primulace^, 313 



Style one : stigmas 3 : sepals 2 : ovules several. Portulacaceje, 97 



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

 Ovary 2 - 4-celled. 



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

 Calyx 4-5-cleft, valvate in the bud : petals im'olute. Rhamxace.e, 113 



