UMBELLIFERAE (PARSLEY FAMILY) 



615 



L P. HORTENSK Hoffm. (CoMMON P.) Leaflets small, ovate, 3-cleft or 

 -toothed. (F. sativum Hoffm.; Carum Fetroselinum B. & H.) — Commoniy 

 cultivated in market gardens, and occasionally found as an escape. (Introd. 

 from the Mediterranean region.) 



15. BERULA Hoffm. 



Calyx-teeth minute. Fruit emarginate at base, glabrous; carpels nearly 

 globose, with very slender inconspicuous ribs and thick corky pericarp ; oil-tubes 

 numerous and contiguous about the seed-cavity ; seed terete. — 

 Smooth aquatic perennial, with simply pinnate leaves and vari- 

 ously cut leaflets, usually conspicuous involucre and involucels 

 of narrow bracts, and white flowers. (The Latin name of the 

 \Yater Cress, of Celtic origin. ) 



1. B. erecta (Huds.) Coville. Erect, 2-9 dm. high; leaflets 

 5-9 pairs, linear to oblong or ovate, serrate to cut-toothed, often 

 laciniately lobed, sometimes crenate, 2-8 cm. long ; fruit scarcely 

 2 mm. long. {B. angustifolia Mertens & Koch ; Shim angusti- 

 foliinn L.) — Swamps and streams, s. Ont. and Mich, to Minn., 

 827. E. electa xs. south w. and westw. July, Aug. Fjg. 827. 



82S. S. ciciitae- 

 folium X 4. 



16. SiUM [Tourn.] L. Water Parsnip 



Calyx-teeth minute. Fruit ovate to oblong, glabrous, with prominent corky 

 nearly equal ribs; oil-tubes 1-8 in the intervals; stylopodiura depressed; seed- 

 face pLtne. — Smooth perennials, with pinnate leaves and .serrate 

 or pinnatifid leaflets, involucre and involucels of numerous narrow 

 bracts, and white flowers. (From aiop; the Greek name of some 

 marsh plant.) 



1. S. cicutaefolium Schrank. Stout, 0.8-2 m. high ; leaflets 

 3-8 pairs, linear to lanceolate, sharply serrate and mostly acumi- 

 nate, 5-12 cm. long, the lower leaves sometimes submersed and 

 flnely dissected ; fruit 2.5-3 mm. long, with prominent ribs. (S. 

 lineare Michx.) — Muddy banks, common. Fig. 828. S. Carsonii 

 Durand appears to be merely a weak aquatic state or perhaps 

 variety, 2-6 dm. high, with leaflets 1-3 2Km's. linear, 

 2-5 cm. long ; when submersed or floating, very thin, 

 ovate to oblong, usually laciniately toothed or dissected, 

 the leaf sometimes reduced to the terminal leaflet ; fruit slightly 

 smaller. 



17. CRYPTOTAENIA DC. Honewort 



Calyx-teeth obsolete. Fruit linear-oblong, glabrous, with obtuse 

 equal ribs ; oil-tubes solitary in the intervals and beneath each rib ; 

 .stylopodium slender-conical; seed-face plane. — A glabrous peren- 

 nial, with thin 3-foliolate leaves, no involucre, involucels of minute 

 bractlets or none, and white flowers. (Name from Kpy-nrds, hidden, 

 and Taivia, a fillet, referring to the concealed oil-tubes.) 



1. C. canadensis (L.) DC. Plant 3-9 dm. high ; leaflets large, 

 ovate, 5-10 cm. long, pointed, doubly serrate, often lobed ; umbels 

 irregular and unequally few-rayed ; pedicels very unequal ; fruit 

 4-6 mm. long; often curved. {Deringa Ktze.) — N. B. to Ga., 

 w. to Tex. and w. Ont. June-Sept. Fig. 829. 



S-^9. C. ^ 

 den sis 



18. ZIZIA Koch. 



Calyx-teeth pron)inent. Fruit ovate to oblong, glal)!ous, with filiform ribs. 

 Oii-tubes large and solitary in the broad intervals, and a small one in each rib. 



