:. (PARSLEY FAMILY.) 179 



11. CRYPTOT.SJNIA, DC. 



Calyx teeth obsolete. Fruit oblong, contracted at the sides. Carpels 



equally 5-rihbed, with very slender single vitta? in each interval, and one 

 under each rib. A smooth perennial herb, with trifoliohite leaves on long 



petioles. Leaflets large, ovate, doubly serrate ami mostly lobed. Bavs of 



the umbel few and very unequal. Involucre none. Involucels tiliform. 

 Flowers white. 



1. C. Canadensis, DC. Bich shady soil, chiefly in the upper districts 

 July. Stem 2 high. 



12. SIUM, L. 



Calyx teeth small or obsolete. Fruit ovate or globular, flattened at the 

 sides ; the carpels with 5 equal corky ribs. Intervals usually with several 

 vitta;. Marsh or aquatic perennial herbs. Leaves pinnate ; the immersed 

 ones dissected into numerous capillary divisions. Involucre several-leaved. 

 Flowers white. 



1. S. lineare, Michx Leaflets varying from linear to oblong, finely and 

 sharply serrate ; calyx teetli minute , fruit globular, -strongly ribbe.l. Along 

 streams, commonly in water, West Florida and Xorth Carolina. Rare. 

 July. Stem 2 high. 



13. THASPIUM, Nutt. 



Calyx 5-toothed. Fruit ovoid or oblong, nearly terete, the carpels 5-winged. 

 Vitta; single in the intervals and two on the commissure. Perennial herbs, 

 with 1 - 3-ternately divided leaves, or the lower ones entire, and yellow 

 (rarely purple) flowers. Involucre none. Fruit all pedicellate. 



1. T. aureum, Xutt. Glabrous; stem sparingly branched, l-3 high ; 

 radical leaves simple, cordate; stem leaves ternate, the leaflets oblong-lanceo- 

 late, sharply serrate ; flowers yellow or (in var. atropurpureum, C. $ A'.) dark 

 purple ; fruit ovoid, 2" long, the ribs winged. Dry open woods. May- 

 July. 



2. T. barbinode, Xutt. Stem 2 -3 high, widely branching, pubescent 

 at the joints; leaves mostly 2 - 3-ternate, the leaflets thin, ovate or ovate- 

 lanceolate, coarsely serrate and often lobed ; flowers yellow ; fruit elliptical, 

 3" long,, with three of the ribs more narrowly winged. Woods and rocky 

 banks, chiefly in the upper districts. May to July. 



Var pinnatifidum, C. & R. More or less pubescent ; leaflets small 

 (V long), coarsely toothed ; fruit smaller, puberulent. Kockv banks of the 

 Chipola River, West Florida. June. 



3. T. pinnatifidum, Gray. Branches and umbels roughish-pnberulent ; 

 leaves 1 -3-ternate ; leaflets 1 -2-pinnatifid, the lobes linear or oblong ; fruit 

 oblong, narrowly 10-winged, 2" long, the intervals minutely scabrous. 

 Mountains of North Carolina and Tennessee. Stem 2 -3 high. 



14. ZIZIA, Koch. 



Habit and most of the characters of Thaspium, but the fruit laterally com- 

 pressed, wingless, and the central one of each umbellet sessile. Flowers 

 yellow. 



