TJMBELLIFBRAE (pARSLEY FAMILY) 



615 



1, P. HORTENSE Hoffm. (CoMMON P.) Leaflets small, ovate, 3-cleft or 

 -toothed. (P. sativum Hoffm.; Carum Petroselinum B. & H.) — Commonly 

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

 from the Mediterranean region.) 



15. BtRVLA Hoffm. 



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

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

 numerous and oontigaous 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 

 Water Cress, of Celtic origin.) 



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

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

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

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

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

 southw. and westw. July, Aug. Fig. 827. 



827. B. ei-eota x 8. 



828. S. cicutae- 

 folium X 4. 



16. SiUM [Toum.] L. Water Parsnip 



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

 nearly equal ribs ; oil-tubes 1-3 in the intervals ; stylopodiura depressed ; seed- 

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

 or pinnatifid leaflets, involucre and involucels of numerous narrow 

 bracts, and white flowers. (From alov^ the Greek name of some 

 marsh plant.) 



1. S. cicutaefMlum 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 

 finely dissected; fruit 2.5-3 mm. long, with prominent ribs. {S. 

 Zimeare 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 pairs, 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. CRYPTOTAfeNIA 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 

 braotlets or none, and white flowers. (Name from KpvnrSs, hidden, 

 and ratria, 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. 



18. ZfZIA Koch. 



Calyx-teeth prominent. Fruit ovate to oblong, glabrous, with filifofin ribs. 

 Qil-tubes large and solitary in the broad intervals, and a srafiU one i» each rib ; 



