VOL. II.] 



CARROT FAMILY. 



523 



4. Eryngium prostratum Nutt. Pros- 

 trate Eryngo. (Fig. 2663.) 



Eryngium integrifolium Walt. Fl. Car. 112. 1788? 



Eryngium prostratum Nutt.; DC. Prodr. 4: 92. 

 1830. 



Prostrate, diffusely branched, rooting from the 

 nodes, the branches very slender, sometimes 18' 

 long. Lower and basal leaves slender-petioled, 

 oval or oblong, mostly obtuse, entire, or crenate- 

 dentate; stem-leaves smaller, often clustered at 

 the nodes, ovate, few-toothed, or entire or some 

 of them 3-parted; heads ovoid-oblong, dense, 

 about 3" long, mostly shorter than the lanceo- 

 late reflexed bracts; bractlets very small; fruit 

 about y 2 " long, tuberculate. 



In low grounds, Kentucky to Missouri, south to 

 Florida and Texas. Summer. 



19. SANICULA L. Sp. PI. 235. 70. 1753. 



Perennial or biennial mostly glabrous herbs, with alternate palmately 3~7-foliolate or pin- 

 natifid leaves and small yellowish white or purplish flowers in compound generally few- 

 rayed umbels. Umbellets globose. Involucre foliaceous; involucels small. Calyx-lobes 

 membranous, mostly persistent. Petals obovate, or narrower, incurved at the apex, emar- 

 ginate. Disk flat. Fruit somewhat flattened laterally, subglobose, covered with hooked 

 bristles in our species. Carpels not ribbed; oil-tubes usually 5. [From the Latin, to heal.] 



About 20 species, natives of the north temperate zone, South America and South Africa. Be- 

 sides the following, about to others occur in the southern and western parts of the United States. 



3f Perennial ; some staminate flowers in separate heads ; styles longer than the bristles. 

 Petals and anthers greenish white; calyx-segments lanceolate, cuspidate; fruit 3" long. 



i. 5. Marylandica. 

 Petals and anthers yellow; calyx-lobes ovate, obtuse; fruit iH" long, or less. 2. S 1 . gregaria. 



3f -54- Biennial; staminate flowers never in separate heads; styles shorter than the bristles. 

 Leaves 3-5-divided; pedicels of staminate flowers i" long; fruit less than 2" long. 3. S. Canadensis. 

 Leaves 3-foliolate; pedicels of staminate flowers 2" long; fruit 3" long, or more. 4. S. trifoliata. 



i. Sanicula Marylandica L,. Sanicle. 



Black Snake-root. 



(Fig. 2664.) 



Sanicula Marylandica L. Sp. PL 235. 1753. 



Rather stout, i}4-4 high, usually simple, 

 topped by a 2-4-rayed umbel. Leaves firm, 

 bluish green, the basal long-petioled, the up- 

 per sessile, 5~7-parted; segments i%'-6 f long, 

 obovate to oblanceolate, irregularly serrate or 

 dentate, often incised; involucral leaves much 

 smaller, 3-cleft; involucel-bracts small, rarely 

 i" long; pedicels of staminate flowers 2" 

 long; calyx i" long, parted into subulate seg- 

 ments; petals greenish white, little exceeding 

 the calyx; anther greenish white; fruit ses- 

 sile, ovoid, 3" long, the slender recurved 

 styles longer than the stout bristles; oil-tubes 

 5, large; seed furrowed dorsally. 



In rich woods, Newfoundland to the Rocky 

 Mountains, south to Georgia. May-July. 



