UMBEL LIFERS. (PARSLEY FAMILY.) 159 



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

 crenate ; umbels globose, on peduncles commonly longer than the petioles ; 

 fruit 2-ribbcd on each side. Wet places, Florida to Mississippi, and northward. 

 May. Leaves 1' wide. 



3. H. ranunculoides, L. Smooth ; leaves orbicular-rcniform, crenately 

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

 mostly nodding in fruit ; fruit obscurely ribbed. Springs and muddy places, 

 Florida to North Carolina, and westward. May and 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, Florida to Mississippi, and northward. 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, Florida to 

 North Carolina, and westward. Julv. 



2. CRANTZIA, Nutt. 



Calyx-teeth obsolete. Petals roundish. Fruit globular. Carpels 5-ribbed, 

 the lateral ribs thickened and corky. Vittae 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 lineata, Michx.) Muddy banks, near 

 the coast, Florida to Mississippi, and northward. July. Leaves 1' long, with 

 cross partitions, narrowed towards the base, obtuse. Involucre 5 - 6-leaved. 



3. SANICTJIiA, Tourn. 



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

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

 nial erect branching herbs, with palmately-divided long-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, Georgia, and northward. 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 1 - 2 high. Branches of the 

 cyme long and spreading. 



4. ERYNGIUM, Tourn. BUTTON-SNAKEKOOT. 



Calyx 5-toothcd, persistent. Styles slender. Fruit turbinate, covered with 

 scales or tubercles, jvithout ribs or vittaa. Herbs, with spiny or bristly mostly 



