xiv ANALYTICAL KEY. 



Bracts herbaceous or none : no stipules. . Chenopodiace^, 65 



Stipules scarious Illecebrace^, 63 



Pruit a more or less triangular akene : embryo curved. 



Flowers perfect, on jointed pedicels, involucrate. Polygonace^, 66 

 Akene not triaugular: embryo straight. 

 Flowers unisexual : filaments incurved in bud : leaves 



simple Urticace^, 73 



Submerged : flowers axillary, naked : leaves sessile, 



filiformly dissected Ceratophyllace^, 72 



Carpels several and distinct, 1 to several-ovuled : calyx 



usually corolla-like. .... Eanunculace^, 1 



2. As in (1), but ovary and fruit enclosed by the calyx and apparently inferior. 



Shrubs, -with scurfy opposite entire leaves : flowers dioecious ; 



fruit baccate. ELiEAGNACE^, 67 



Herbs : calyx corolla-like ; fruit an akene. 

 Leaves simple, opposite, entire, without stipules: flowers 



involucrate Nyctaginace^, 62 



Leaves compound, alternate, stipulate Rosacea, 26 



3. Ovary and fruit superior, of 2 or more carpels. 



Fruit 2 to 4-celled, usually lobed : cells 1 to 2-ovuled. 

 Capsule 3-celled, 3-lobed : juice milky : mostly herbaceous. 



EUPHORBIACE^, 70 



Fruit 4-celled, 4-lobed, compressed, indehisceut : styles 2 : 



small aquatic, w^ith opposite entire leaves. CALLiXRicnACEiE, 71 



Fruit fleshy, 3-celled, 3-lobed ; shrubs with alternate simple 



leaves Ehamxace^, 21 



Fruit a double samara : trees with opposite pinnate leaves. Sapindace^, 23 

 Cruciferous herb: pod small, obcompressed. Lepidium, in CRUCiPER.ffi, 6 

 Fruit capsular, 1 -celled or more, several-ovuled: low herbs 

 with opposite leaves. 



Capsule 3 to 5-celled : succulent FicoiDEiE, 35 



Capsule 1 -celled : placentae central. 



Style and stigma 1 : stamens alternate with the sepals. 



Glaux, in Primulace^, 46 

 Styles or stigmas 3 or more: stamens opposite the 

 sepals Cartophtllace^, 11 



4. Ovary and fruit inferior. 

 Fruit many-seeded: capsule (^ inferior) 1 -celled: leaves 



cordate Saxifragace^, 27 



Fruit mostly 1 -seeded. 

 Flowers perfect : fruit nut-like : herbs with alternate entire 



leaves Santalace.®, 69 



Dioecious parasites on trees, ^v-ith opposite leaves and jointed 



stems : berry with glutinous pulp. . . . LoRANXHACEiE, 68 

 Aquatic herbs, with opposite or verticillate leaves. . Halorage^, 29 



