(280) 



ticulate; leaves verticillate, sessile, dichoto- 

 mous. 



Affinities doubtful. Further investigations 

 even may remove them altogether from the 

 Angiosperms and place them near the Gneta- 

 cece, together with the Podostcmonece. 



1. Ceratophyllum L- 

 Only genus of the family. 

 1. C. DEMEESUM L. Common aquatic. 



DIYISION 2. MONOCOTYLEDONES. 

 SERIES 1. COKOLLIFLOB.E. 



Perigonium 2x3 parted. Ovary 3 carpidia, 

 syncarpous in different degrees. 



ORDER 1. GYNANDK^E. 

 Family 1, ORCHIDEJE, 



Placentae parietal. 



1. Epipactis Haller. 



Anther 1, persistent, not connate with the 

 column; pollinia 2, attached to the common 

 gland. Perigonium spreading; labellum geni- 

 culate, inferior part concave. Ovary contorted 

 only at base; column short, terete. 2 Cau- 

 lescent, flowers in a loose, few-flowered raceme. 



1. E, GIGANTEA Dougl. Sepals brownish- 

 green, labellum white, dotted. San Francisco 

 [extinct]. Camp Taylor. Summer. 



