446 Key to the System of 



1901. Seeds with appendages at both ends. 



Tall, one or two or few basal leaves stem-like, pungent, 

 the others rudimentary ; main floral leaf erect, pointed, 

 continuing the stem, dilated at the base ; flower-clusters 

 in an almost terminal irregularly compound cyme ; sepals 

 more pointed than the petals ; stamens six ; filaments 

 flat ; fruit ellipsoid but pointed, three-celled, as long as 

 the sepals and petals. J. maritimus. 



Seeds without any appendages ... 1902 



1902. Flowers rather pale-colored. 



Usually tall, almost leafless or some basal leaves stem-like ; 

 main floral leaf erect, pungent, continuing the stem ; 

 flowers scattered, in an irregularly compound almost 

 lateral cyme ; sepals and petals pointed ; stamens usually 

 three ; fruit obovate-ellipsoid, three-celled, about as long 

 as the sepals and petals. J. pallidus. 



Flowers rather dark-colored .. ... ... 1903 



1903. Flowers usually quite numerous. 



Tall, almost leafless or some basal leaves stem-like ; main 

 floral leaf erect, contimiing the stem ; flowers either 

 scattered or much clustered in a nearly lateral irregularly 

 compound cyme; sepals and petals much pointed, occa- 

 sionally pale-colored ; stamens generally three ; style 

 extremely short ; fruit obovate-ellipsoid, slightly im- 

 pressed at the summit, shorter than the sepals and petals 

 or nearly as long, three-celled ; seeds ellipsoid. 



J. communis. 

 Flowers usually rather few. 



Rather tall, almost leafless or seldom few basal leaves stem- 

 like ; stems particularly slender ; main floral leaf con- 

 tinuing the stem ; flowers very small, in a nearly lateral 

 cyme, mostly scattered, seldom many ; sepals and petals 

 pointed ; stamens generally six ; fruit ovate-ellipsoid, 

 slightly exserted, three-celled. J. pauciflorus. 



1904. Somewhat tall, with numerous clusters of many 



flowers each. 



Lax ; root producing offshoots ; stem compressed ; leaves 

 several, scattered, compressed-filiform, imperfectly jointed, 

 extensively hollow, placed vertically ; sepals and petals 

 much pointed ; flower-clusters in a terminal cyme ; stamens 

 usually three ; fruit almost one-celled, somewhat exserted, 

 narrow, angular ; seeds without any appendage. 



J. prismatocarpus. 



