UMBELLIFER.E. (PARSLEY FAMILY.) 175 



1. H. Americana, L. Smooth; leaves orbicular-reuiform, crenately 

 7-lobed; umbels sessile, 3 -5-flo\vered ; fruit 2-ribbed. Mountains of North 

 Carolina. July. Stems stolouiferous. Leaves very thin, glossy. 



2. H. umbellata, L. Smooth; leaves orbicular, peltate, obscurely 

 lobe J, crenate ; umbels globose, on peduncles commonly longer than the peti- 

 oles ; fruit 2-ribbed on each side. Wet places. May. Leaves I' wide. 



3. H. ranunculoides, L. Smooth ; leaves orbicular-reuiform, cre- 

 uatelv 3-5-lobed; umbels few-flowered, on peduncles much shorter than the 

 petioles, mostly nodding in fruit ; fruit obscurely ribbed. Springs and 

 muddy places. May- June. Petioles 6'- 12' long. Peduncles 1' long. 



4. H. interrupta, Muhl. Smooth ; leaves orbicular, peltate, crenate ; 

 umbels proliferous, the nearly sessile clusters forming an interrupted spike; 

 fruit strongly ribbed. Wet places. June. Petioles longer than the 

 peduncles. 



5. H. repanda, Pers. Pubescent; leaves broadly ovate, truncate or 

 slightly cordate at the base, glandular-serrate ; umbels capitate, few-flowered, 

 shorter than the petioles ; fruit strongly ribbed. Low grounds. July. 



2. CRANTZIA, Xutt. 



Calyx teeth obsolete. Petals roundish. Fruit globular. Carpels 5-ribl>ect, 

 the lateral ribs thickened and corky. Vittaj single in the intervals, with 2 on 

 the commissure. Small creeping marsh herbs, with fleshy linear leaves, and 

 small whitish flowers in axillary umbels. 



1. C. lineata, Nutt. (Hydrocotyle liueata, Mic.Jtx.) Muddy banks, 

 near the coast. July. Leaves 1' long, with cross partitions, narrowed to- 

 wards the base, obtuse. Involucre 5 - 6-leaved. 



3. SANICULA, Tourn. 



Calyx 5-toothed, persistent. Fruit globose, without ribs, armed with 

 hooked prickles ; the carpels not separating spontaneously, each with 5 vittae. 

 Perennial erect branching herbs, with palinately divided loug-petioled 

 leaves, and polygamous flowers in small heads, disposed in a loose expanding 

 cyme. 



1. S. Marilandica, L. Leaves 5-7-parted, the divisions lobed and 

 toothed ; heads many-flowered ; sterile flowers numerous on slender pedicels ; 

 styles long, recurved. Dry woods. May. Stem 2 -3 high. 



2. S. Canadensis, L. Leaves 3-5-parted, the divisions lobed and 

 toothed ; heads few-flowered; the sterile flowers (1-3) nearly sessile; styles 

 short and straight. Dry woods, common. May. Stem l-2 high. 

 Branches of the cyme long and spreading. 



4. ERYNGIUM, Tourn. BUTTON SNAKEBOOT. 



Calyx 5 lobed. Styles long and slender. Fruit short, turbinate, granulate 

 or scaly, tne ribs obsolete. Vittse 5, 2 dorsal and 3 on the commissure. 

 Smootn herbs Leaves often with cartilaginous margins, and spiny serra- 



