210 UMBELLIFER^. (PARSLEY FAMILY.) 



involucels of many bractlets, and white flowers. (Name from xa'P'«'> ^o glad 

 den, and cpvWov, a leaf, alluding to the agreeable odor of the foliage.) 



1. C. prociimbens, Crautz. More or less hairy ; stems slender, spread- 

 ing (6- 18' high); umbels few-rayed; fruit narrowly oblong (2^-3^'' long), 

 glabrous, contracted but not tapering at the summit, the intervals broader 

 than the ribs. — N. Y. to N. C, west to Mich., Iowa, Ark., and Miss. 



Var. Shortii, Torr. & Gray, has more broadly oblong to ovate (often 

 somewhat pubescent) fruit, not at all contracted at the summit. — Ky. to Arkc 

 and La. 



32. OSMORRHIZA, Raf. Sweet Cicely. 



Calyx-teeth obsolete. Fruit linear to linear-oblong, with prominent caudate 

 attenuation at base, very bristly, with equal ribs ; oil-tubes obsolete ; seed-face 

 concave. — Glabrous to hirsute perennials (1-3° high) from thick aromatic 

 roots, with ternately compound leaves, ovate variously toothed leaflets, few- 

 leaved involucres and involucels, and white flowers in few-rayed and few-fruited 

 umbels. (Name from oaixi], a scent, and pi(a, a root.) 



1. O. brevistylis, DC. ^atheT stout, villous-pubesceiit ,- leaves 2 - 3-ter- 

 nate; leaflets 2-3' long, acuminate; fruit (not including the caudate attenu- 

 ation) 6" long ; sti/lopodium and sti/le -J" long. — From N. Scotia westward 

 through the Northern States, and in the mountains to N. C. May, June. 



2. O. longistylis, DC. Glabrous or slightly pubescent ; like the last, but 

 with the stt/le 1" long or more, and the seed-face more deeply and broadly con- 

 cave. — N. Scotia to Va., and west to Tenn,, E. Kan., and the Dakotas. 



33. ERIGENTA, Nutt. Harbinger-of-Spring. 



Calyx-teeth obsolete. Petals obovate or spatulate, flat, entire. Fruit didy 

 mous, nearly orbicular and laterally flattened, the carpels incurved at top and 

 bottom, nearly kidney -form, with 5 very slender ribs, and several (1 -3) small 

 oil-tubes in the intervals ; inner face of the seed hollowed into a broad deep 

 cavity. — A small glabrous vernal plant, producing from a deep round tuber a 

 simple stem, bearing one or two 2 - 3-ternately divided leaves, and a somewhat 

 imperfect and leafy -bracted compound umbel. Flowers few, white. (Name 

 from itpiyeueia, borji in the spring.) 



1. E. bulbosa, Nutt. Stem 3-9' high; leaf-segments Hnear-oblong ; 

 fruit 1" long, 1^" broad. — W. New York to Md. and Tenn., and west to Wise, 

 S. E. Minn., and Kan. 



34. HYDROCdTYLE, Tourn. Water Pennywort. 



Calyx-teeth obsolete. Fruit strongly flattened laterally, orbicular or shield- 

 shaped ; the carpels 5-ribbed, two of the ribs enlarged and often forming a 

 thickened margin ; oil-tubes none, but usually a conspicuous oil-bearing layer 

 beneath the epidermis. — Low, mostly smooth, marsh or aquatic perennials, 

 with slender creeping stems, and round shield-shaped or kidney-form leaves- 

 with scale-like stipules. Flowers small, white, in simple umbels or clusters, 

 which are either single or proliferous (one above another), appearing all sum- 

 mer. (Name from vhuip, water, and kotvAtj, a Jlat cup, the peltate leaves of 

 several species being somewhat cup-shaped.) 



