This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol2", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
Herbs, our species annuals, with ternately or pinnately decompound leaves and small compound umbels of white flowers. Involucre none or rarely of 1-2 bracts. Involucels of numerous small bracts. Calyx-teeth obsolete. Petals inflexed at the apex. Stylopodium small, conic. Fruit oblong or linear-oblong, glabrous or pubescent, flattened laterally. Carpels 5-angled, slightly flattened dorsally, the ribs slender, equal, obtuse or wanting; oil-tubes mostly solitary in the intervals. Seed-face channeled. [Greek, pleasant leaf, from the fragrance.]
About 40 species, natives of the warmer parts of the north temperate zone and northern Africa. Type species: Chaerophyllum sylvestre L.
Fruit not beaked, its ribs slender, narrower than the intervals between them.
Fruit beaked, its prominent ribs mostly as broad as the intervals.
Scandix procumbens L. Sp. PL 257. 1753. C. procumbens Crantz, Class. Umb. 77. 1767. Chaerophyllum procumbens Shortii T. & G. Fl. N. A.
Much branched, more or less pubescent, slender, spreading, ascending or erect, 6'-2o' high. Lower leaves slender-petioled, ternately decompound, the divisions ovate, pinnatifid, the ultimate segments obtuse; upper leaves smaller, nearly sessile; umbels 2-6-rayed; rays 1-2' long in fruit; flowers few in the umbellets; bracts of the involucels ovate; fruit glabrous or minutely pubescent, oblong or linear-oblong, 2"-2 1/2" long, narrowed or blunt but not beaked at the summit, the ribs narrower than the intervals between them.
C. Teinturieri Hook. Comp. Bot. Mag. 1: 47. 1835.
Chaerophyllum procumbens var. Teinturieri C. & R. Bot. Gaz. 12: 160. 1887.
C. reflexum Bush Trans. Acad. St. Louis 12: 62. 1902.
Similar to the preceding . species, more or less pubescent, much branched, often taller. Ultimate leaf-segments acute or obtuse; rays of the umbels 1' - 3' long; fruit 3"-4" long, less than 1" wide, glabrous or pubes-. cent, narrowed above into a distinct beak, its prominent ribs as broad as the intervals between them, or broader.
In dry soil, southern Virginia to Tennessee, Kansas, Florida and Texas. March-May.
C. sylvestre L. [Anthriscus sylvestris (L.) Hoffm.I, wild chervil, dog-parsley or wild beaked-parsley, a tall annual with decompound leaves and smooth beakless fruit, has been found as a waif on Staten Island and in ballast about the seaports.
9. D╔RINGA Adans. Fam. Pl. 2: 498. 1763.
[Cryptotaenia DC. Mem. Omb. 42. 1829.]
Perennial glabrous herbs, with 3-divided leaves, and compound irregular umbels of white flowers. Involucre and involucels none. Calyx-teeth obsolete Petals inflexed at the apex. Stylopodium conic; fruit narrowly oblong, laterally compressed, glabrous. Carpels nearly terete, the ribs equal, obtuse; oil-tubes solitary in the intervals and also beneath each rib. Seed-face flat or nearly so. [Said to be named for Deering or Dering]
A monotypic genus of eastern North America and Japan.
Sison canadense L. Sp. Pl. 252. 1753.
C. canadensis DC. Mem. Omb. 42 1829. .
D. canadensis Kuntze, Rev. Gen. Pl. 266. 1891.
Erect, rather slender, freely branching, l°-3° high. Lower and basal leaves long-petioled, 3-divided, the segments thin, ovate, acute or acuminate at the apex, sharply and irregularly serrate, incised, or sometimes lobed, 1'-4' long, the lateral ones nearly sessile and oblique at the base, the terminal one abruptly narrowed into a margined incised stalk; upper leaves nearly sessile; umbels 4-10-rayed; pedicels unequal; fruit narrowed at both ends, 2"-3" long, often curved.
In woods, New Brunswick to South Dakota, Missouri, Georgia and Texas. Ascends to 4200 ft. in North Carolina. June-July.