56 THE GENUS PHORADENDKON 



Stem not 4-angled. Mexican or Central 



American. VERNICOSAE. 



Fruit not tuberculate though sometimes wrinkled 

 or minutely papillate. 



Leaves equally or obscurely nerved on both sides. 

 Mexican or Central American. VERNICOSAE. 

 West Indian. 



Leaves lanceolate or elliptical. 



CHRYSOCARPAE. 



Leaves obovate-spatulate. DOMINGENSES. 

 Of the Pacific Islands. P. Townsendi. 



Leaves fine-nerved above, heavy-nerved 



beneath. P. laxiflorum. 



Flowers prevailingly 4-ranked on each joint. 



Commonly varying into 2 ranks. See above. 

 Often varying into 4+2 series, i. e. with an extra flower 

 interposed at top between the two rows of flowers 

 over each scale of the spike, a. 

 a Fruit tuberculate. 



Stein sharply 4-angled. 



Leaves obovate. Brazilian. P. emarginatum. 



Leaves narrowly lanceolate. West Indian. P. gracile. 



Leaves subelliptical. Argentine. P. argentinum. 



Stem not sharply 4-angled. 



Argentine. Leaves short. ARGENTINAE. 



Uruguayan. Leaves elongated. FALCIFERAE. 



Mexican or Central American. ANNULATAE. 



a Fruit not tuberculate. 



Stem sharply 4-angled. 



Sepals closely meeting in fruit. QUADRANGULARES. 



Sepals not meeting : stem rhombic. RUBRAE. 



Stem terete or 2-edged, at first somewhat rhombically 

 compressed or 4-lined. 



Leaves drying golden, with thin revolute margin. 



Brazilian. NITENTES. 



Leaves not golden-glossy. 



Drying thin, sharp nerved. 



Mexican. NERVOSAE. 



Central American. P. Cooperi. 



South American. 



Leaves narrow. ANGUSTIFOLIAE. 



Leaves broad. ANDINAE. 



West Indian. CHRYSOCARPAE. 



Coriaceous or heavy. 



Rather sharp-nerved. 



Dimidiate. South American. DIMIDIATAE. 



