PHILOSOPHICAL SOCIETY OF WASHINGTON. 



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mination acece is retained by American and altered by English 

 authorities. 



American. 

 Berber idacese. 

 Cistaceae. 

 Violacese. 

 Polygalacese. 

 Caryophyllaceae. 

 Portulacacese. 

 Hypericaceae. 

 Celastracese. 

 Vitacese. 

 Saxifragaceae. 

 Hamamelacese. 

 Lythraceae. 

 Onagraceae. 

 Passifloraceae. 

 Cactaceae. 

 Valerianaceaa. 

 Asclepiadacese. • 

 Gentianaceae. 

 Borraginaceae. 

 Scrophulariaceae. 

 Lentibulaceae. 

 Plantaginacese. 

 Nyctaginaceae. 

 Lauraceae. 

 Juglandaceae. 

 Salicaceae. 

 Ceratophyllaceae. 



English. 

 Berberidese. 

 Cistineae. 

 Violarieae. 

 Polygaleae. 

 Caryophylleae. 

 Portulaceae. 

 Hypericinese. 

 Celastrinece. 

 Ampelideae. 

 Saxifrageae. 

 Hamamelideae. 

 Lythrarieae. 

 Onagrariae. 

 Passifloreae. 

 Casteae. 

 Valerianeae. 

 Asclepiadeae. 

 Gentianeae. 

 Borragineas. 

 Scrophularineae. 

 Lentibulariceae. 

 Plantagineae. 

 Nyctagineae. 

 Laurineae. 

 Juglandeae. 

 Salicineae. 

 Ceratophylleae. 



On the other hand, the British authorities are followed in uniting 

 the Saururacece with the Piperacece, and also in placing the Parony- 

 chiece, reduced to a sub-order under the Illecebracece ; but from the 

 certain relationship of this order with the Caryophyllacece, it is 

 deemed unnatural to separate these two orders by putting the former 

 into the Monochlamydeous division. [See- American Naturalist, 

 November, 1878, p. 726.] On the same ground of apparently 

 close relationship, I have followed Bentham and Hooker in abolish- 

 ing the Callitrichacece, and placing Callitriche in the Haloragece. 

 On the other hand I have followed Gray in retaining the Lobeliacece, 

 as also in keeping the Ericaceae intact, aud not slicing off the 

 Vacciniacece from one end, and the Monotropece from the other, as is 

 done in the Genera Plantarum. 



