152 WEEDS AND USEFUL PLANTS. 



guished by its unspotted stem, the long pendulous one-sided involucels 

 and the straight ridges of the fruit. 



10. PETKOSELTNUM, Hoffm. PARSLEY. 



[Greek, Pdra, rock, and Selinum; Rock Selinum, from its native habitat.] 



Fruit ovate. Carpels with 5 equal ribs. Channels with single oil-tubes 

 and two on the inner face of the carpels. Involucre few-leaved. Invo- 

 lucels many-leaved. Stems somewhat angular. Leaves decompound. 

 1. P. SATI'VUM, Hoffm. Segments of the lower leaves cuneate-ovate, 

 trifid and incised-dentate, of the upper ones linear-lanceolate and nearly 

 entire ; involucels subulate. 



CULTIVATED PETROSELINUM. Parsley. 



Fr. Persil. Germ. Die Petersilie. Span. Perexil. 



Plant smooth. Root biennial. Stem 2-4 feet high, striate with green and yellowish 

 stripes, branched. Leaves shining green, the lower ones much dissected. Umbels terminal 

 and axillary, pedunculate. Involucre of a single leaflet (or sometimes 2-3) linear. Invo- 

 lucels of 5 -6 short subulate leaflets. Petals greenish-white. Fruit ovate. 



Gardens : cultivated. Native of Eastern Europe. Fl. June. Fr. August. 



Obs. Cultivated for the pleasant-flavored leaves which are used in 

 culinary processes. The root has long been a popular diuretic. The 

 var. CEISPUM, or Curled Parsley with the segments of the lower leaves 

 broader, and curled on the margin is also frequent in kitchen gardens. 



11. CICU'TA, L. WATER-HEMLOCK. 



[Latin name of the Hemlock.] 



Calyx with 5 minute teeth. Fruit roundish. Carpels with 5 equal flat- 

 tish ribs, with a single oil-tube in each interval. Involucre few-leaved. 

 Involucels many-leaved. Sub-aquatic herbs. Stem terete, smooth, fistular. 

 Leaves tripinnately or triternately dissected. 



1, C. macula'ta, L. Stem spotted or streaked ; 

 leaves bi- or tri-teruately divided, the segments 

 lanceolate, mucronately serrate, the nerves ter- 

 minating in the notches. 



SPOTTED CICUTA. Spotted Cow-bane. Water 

 Hemlock. 



Root perennial, with thick oblong fleshy fibres. Stem -1-6 

 feet high, branching, dark purple, or striate with greeu and 

 purple or b|pwn ; leaves smooth, the lower ones on rather 

 long petioles, triirnuit'.'Iy dissected with the terminal 

 division mostly in fives ; segments or leaflets 2-3 inches long, petiolulate, penninerved 

 the nerves (as remarked by Dr. BIGELOW,) running to the notches of the serratures instead 

 of the points. Umbels spreading ; rays slender. Involucre or 1 - 2 linear leaflets. Invo- 

 lucels of 5-6 small lance-linear leaflets. Petals white. Fruit nearly round ; ribs rather 

 broad ; channels reddish-brown or dark purple, filled with aromatic oily matter. 



FIG. 106. The fruit of the Water Hemlock [Cicuta maculata]. 107. A section of the 

 same 



