48 CONTRIBUTIONS FROM THE NATIONAL, HERBARIUM. 



Calyx tube free from the ovary. 



Fruit fleshy, a berry-like drupe. .AQUIFOLIACEAE (p. 199). 

 Fruit a capsule. 

 Capsule 2-celled; style about equaling the stamens. 



ESCALLONIACEAE (p. 172). 

 Capsule 3-celled; style much longer than the stamens. 



CLETHB.ACEAE (p. 220). 

 CC. Plants herbaceous (slightly woody in Pyrolaceae). 

 Stamens more than 10. 

 Stems succulent, flat, the leaves reduced to scales; ovary inferior. 



CACTACEAE (p. 211). 

 Stems not succulent and flat, the leaves developed ; ovary superior (calyx 

 sUghtly adherent in Castalia). 

 Plants aquatic, with broad floating or emersed blades. 



NYMPHAEACEAE (p. 155). 

 Plants terrestrial. 



Filaments united in a tube MALVACEAE (p. 202). 



Filaments separate. 



Leaves peltate, lobed Podophyllum (p. 160) . 



Leaves not peltate. 



Leaves compound RANUNCULACEAE (p. 156). 



Leaves simple. 

 Leaves tubular (hollow and pitcher-shaped). 



SARRACENLACEAE (p. 170). 

 Leaves not hollow. 



Leaves fleshy PORTULACACEAE (p. 150). 



Leaves not fleshy. 

 Calyx tubular, 6-toothed; plants viscid . Parsonsia (p. 212). 

 Calyx of distinct sepals; plants not \iscid. 



Sepals 2; juice colored PAPAVERACEAE (p. 162). 



Sepals 3-5; juice not colored CISTACEAE (p. 205). 



Stamens 10 or fewer. 



Stamens as many as petals and opposite them.BERBERIDACEAE (p. 160). 

 Stamens not of same number as petals and opposite them. 



Ovary inferior (partly inferior in Portulaca and Saxifragaceae). 

 Ovules and seeds more than 1 in each cell. 

 Ovary 1-celled. 

 Sepals or calyx lobes 2; plants succulent. 



PORTULACACEAE (p. 150). 

 Sepals or calyx lobes 4 or 5; plants not succulent. 



SAXIFRAGACEAE (p. 171). 

 Ovary 2-4-celled. 

 Anthers opening by terminal pores; leaves 3-ribbed. 



MELASTOMATACEAE (p. 212). 

 Anthers not opening by pores; leaves not 3-ribbed. 



Ovary slightly inferior; styles 2 Saxifraga (p. 172). 



Ovary wholly inferior; style 1, the stigma often lobed. 



ONAGRACEAE (p. 212). 

 Ovules and seeds single in each cell. 



Flowers in simple or compound umbels; stamens 5. 



Fruit dry, splitting into seedlike carpels APIACEAE (p. 215). 



Fruit fleshy, a 2-5-sceded drupe ARALIACEAE (p. 215) . 



Flowers in spikes. 



Plants aquatic, with dissected leaves Msniophyllura (p. 214). 



Plants terrestrial, the leaves not dissected Gaura (p. 213) . 



