UMBELLIFER.E. (PARSLEY FAMILY.) 201 



H- -H- Seed straight, not silicate ; umbels simple. 



34. Hydrocotyle. Fruit more or less orbicular, with no oil-tubes. Low perennials, in or 



near water, with creeping stems, and peltate or reniform leaves. 



* * * * Fruit obovoid or globose, densely prickly or scaly. 



35. Eryngium. Flowers sessile in dense bracteate heads, white or blue. Leaves mostly 



rigid and more or less spinose. 



36. Saiiicula. Flowers in irregularly compound few-rayed umbels, yellow. Leaves palmate. 



1. DA TIC US, Tourn. CARROT. 



Calyx-teeth obsolete. Fruit oblong, flattened dorsally; stylopodinm de- 

 pressed ; carpel with 5 slender bristly primary ribs and 4 winged secondary 

 ones, each of the latter bearing a single row of barbed prickles ; oil-tubes soli- 

 tary under the secondary ribs, two on the commissural side ; seed-face somewhat 

 concave or almost flat. Bristly annuals or biennials, with piunately decom- 

 pound leaves, foliaceous and cleft involucral bracts, and white flowers in com- 

 pound umbels which become strongly concave. (The ancient Greek name.) 



D. CAR6TA, L. Biennial ; stem bristly ; ultimate leaf-segments lanceolate 

 and cuspidate ; rays numerous. Naturalized everywhere, from Eu. 



2. CAUCALIS, L. 



Calyx-teeth prominent. Fruit ovate or oblong, flattened laterally ; stylo- 

 podium conical ; prickles barbed or hooked ; seed-face deeply sulcate. Other- 

 wise as Daucus. Our species annual. (The ancient Greek name.) 



C. xoD6s.\, Hudson. Decumbent, branching only at base, stems 1-2 long, 

 retrorsely hispid ; umbels naked, opposite the leaves and nearly sessile, of 2 or 

 3 very short rays. Md., Iowa, and southward. (Nat. from Eu.) 



C. ANTHRISCUS, Hudson, lias 1-2-pinnate leaves with broad leaflets, and 

 more regularly compounded umbels. Ohio, etc. (Nat. from Eu.) 



3. ANGELICA, L. 



Calyx-teeth obsolete. Fruit strongly flattened dorsally ; primary ribs very 

 prominent, the laterals extended into broad distinct wings, forming a double- 

 winged margin to the fruit; oil-tubes one to several in the intervals or indefi- 

 nite, 2 to 10 on the commissure. Stout perennials, with ternately or pinuately 

 compound leaves, large terminal umbels, scanty or no involucres, small manv- 

 leaved iuvolucels, and white or greenish flowers. (Named angelic from its 

 cordial and medicinal properties.) 



* Seed adherent to the pericarp ; oil-tubes one to several in the intervals ; upper- 

 most leaves mostly reduced to large inflated petioles. 



1. A. Curtisii, Buckley. Glabrous; leaves twice ternate or the divisions 

 quinate; leaflets thin, ovate-lanceolate (1-3' broad), sharply and irregularly 

 toothed ; fruit glabrous, 1^-3" broad; oil-tubes mostly one in the intervals 

 (sometimes 2 or 3). Along the Alleghanies from Penn. to N. C. Aug. 



2. A. hirsuta, Muhl. Pubescent above ; leaves twice pinnately or ter- 

 nately divided; leaflets thick! sh, lanceolate to oblong (5-10" broad), serrate; 

 fruit pubescent, 2" broad ; oil-tubes 3 - 6 in the intervals. (Archangelica hir- 

 snta, Torr. $ Gray.) Dry ground, Conn, to Minn., Tenn., and Fla. July. 



* * Seed loose; oil-tubes indeflnite (25-30); upper petioles not so prominent. 



3. A. atropurpurea, L. Very stout, glabrous throughout, with dark 

 purple stem; leaves 2 - 3-ternately divided, the pinnate segments of 5-7 Ian- 



