Vor. IL.] CARROT FAMILY. 521 
1. Lilaeopsis lineata (Michx.) Greene. 
Lilaeopsis. (Fig. 2658.) 
Hydrocotyle Chinensis 1. Sp. Pl. 339. 1753? 
Hydrocotyle lineata Michx. Fl. Bor. Am. 1: 162. 1803. 
Crantzia lineata Nutt. Gen. 1:178. 1818. 
Lilaeopsis lineata Greene, Pittonia, 2: 192. 1891. 
Creeping, rooting in the mud, 2’-5’ long. Petioles 
linear-spatulate, very obtuse, generally 1/-3/ long but 
sometimes much longer, about 114’ thick, hollow, 
distinctly jointed by transverse partitions; peduncles 
somewhat exceeding the leaves; umbels 5-10-rayed, 
the rays 1%4’/-3’” long; fruit about 1/’ long. 
In salt and brackish marshes, and on muddy river- 
shores, Massachusetts to Florida, west to Mississippi. 
June-Aug. 
17. CYNOSCIADIUM DC. Mem. Omb. 44. fl. zz. 1829. 
Glabrous slender branching annuals, the lower and basal leaves mostly linear and entire, 
those of the stem mainly divided into few linear segments. Involucres and involucels of 
several subulate or narrowly linear bracts, sometimes deciduous. Flowers small, white, in 
terminal and lateral compound umbels. Calyx-teeth short, persistent. Fruit ovoid, or ob- 
long, nearly terete, glabrous, strongly ribbed, the lateral ribs the larger; oil-tubes solitary in 
the intervals and 2 on the commissural side of each carpel. Seed-face flat. Stylopodium 
conic. [Greek, dog-celery. ] 
Two known species, natives of the southern United States. 
1. Cynosciadium pinnatum DC. Pinnate 
Cynosciadium. (Fig. 2659.) 
Cynosciadium pinnatum DC. Mem. Omb. 45. pl. r7. 
B. 1829. 
Stem erect, or assurgent, 1°-2° high. Lower and 
basal leaves petioled, the blade elongated-linear, 
entire, acuminate or acute at each end, 1/3’ long, 
14/-3/ wide; stem-leaves pinnately divided nearly 
to the midvein into 3-9 narrowly linear entire seg- 
ments, the terminal segment much larger than the 
lateral ones, or some of them entire; bracts of the 
involucres 2//-3// long; umbels 4-10-rayed; rays 
very slender, 14/-134’ long; fruit about 2/” long, 
less than 1/’ wide, tipped by the conic stylopodium 
and crowned by the ovate calyx-teeth. 
In wet soil, Missouri to the Indian Territory and 
Texas. May-Aug. 
18. ERYNGIUM L.,. Sp. Pl. 232.1753. 
Herbs, with spiny-toothed lobed dentate or sometimes dissected, rarely entire leaves, 
and dense bracted heads or spikes of small white or blue sessile flowers, subtended by bract- 
lets. Calyx-teeth rigid, pungent, or acute. Petals erect, the apex emarginate with a long 
inflexed point. Disk expanded. Stylesslender. Fruit obovoid or ovoid, scaly or tubercu- 
late, somewhat flattened laterally. Carpels nearly terete, their ribs obsolete or none, the 
oil-tubes usually 5. [Greek, a kind of thistle.] 
About 150 species, of wide geographic distribution in tropical and temperate regions. Besides 
the following, about 18 others occur in the southern and western parts of North America. 
Plants erect, tall; stem-leaves spiny or bristly-margined. 
Leaves elongated-linear, parallel-veined. 1. £. aquaticum. 
Leaves elongated-linear, reticulate-veined. 2. E. Virginianum. 
Stem-leaves palmately incised-pinnatifid. 3. BE. Leavenworthii. 
Plants prostrate, slender; leaves unarmed. 4. E. prostratum. 
