UMBELLlFERyE. 139 



21. CH^ROPHYLLUM. Linn. Wild Chervil. 



(From the Greek %aipw, to rejoice, and <t>v\\ov, a leaf; on account of the 

 agreeable smell of the leaves.) 



Calyx with the margin obsolete. Petals obovate, emarginate, 

 inflexed. Fruit not beaked, laterally contracted or compressed. 

 Carpels with 5 obtuse equal ribs ; lateral ribs margined. 

 General involucre none or few-leaved ; partial one many-leaved. 



C. procumbens Lam : stem decumbent, somewhat hairy ; leaves bi-pin- 

 nate ; leafets pinnatifid ; segments lance-oblong, rather obtuse ; umbels 

 opposite the leaves, 2 3-rayed ; partial involucre of 4 5-ovate ciliate 

 leaves ; fruit prismatic, smooth, crowned with the persistent styles. Scandix 

 procumbens Linn. Myrrhis procumbens and M. bifida Spreng. 



hi shady situations. N. J. to S. Car. W. to Ark. April, May. .Stm 

 6 13 inches long, slender, sometimes nearly erect. Umbels terminal and lateral, 

 few-flowered. Flowers small, white. Procumbent Wild Chervil. 



22. OSMORHI2TA. Raf. Osmorhiza. 

 (From the G/eek ov^ri, odor, and piga, a root ; from its sweet or fragrant root.) 



Calyx with the margin obsolete. Petals ovate, scarcely 

 emarginate, with a very short inflexed point. Fruit elongated, 

 attenuated at base, solid, acute-angled, in the transverse section 

 roundish. Carpels with hispid angles "and 5 acute ribs ; com- 

 missure sulcate. General involucre 2 3 -leaved ; partial one 

 often 5 -leaved. 



1. O. longistylis D. C. : styles filiform, nearly as long as the fruit, 

 diverging. Uraspermum Claytoni Nutt. Scandix dulcis Muhl. 



Wet meadows. N. Can. to Virg. W. to Oregon: May, June. 'ZJ-. Stem 2 3 

 feet high, purplish, at length nearly smooth, striate. Leaves mostly bi-ternate, 

 the radical ones on long petioles ; leafets oblong-ovate, incisely serrate, acute. 

 Flowers white, twice as large as in the next species. The root has the flavor of 

 Aniseed. Long-styled Osmorhiza. Sweet Cicely. 



2. O. brevistylis D. C.: styles conical, erect, about half the length of the 

 fruit. Myrrhis Claytoni Mich. Uraspermum hirsutum Big. 



Shady rocks. Can. to Car. W. to Oregon. May, June. %. Stem about 

 2 feet high, branching, striate, pale-green, at length nearly smooth. Leaves 

 bi-ternate ; leafets incised, often pinnatifid. The root has a sweetish taste, not 

 so pleasant as that of the preceding. Short-styled Osmorhiza. 



23. CONIUM. Linn. Poison Hemlock. 



(Said to be derived from the Greek KWJ/OJ, a cone or top ; in allusion to the 

 giddiness produced by its fruit. 



Calyx with the margin obsolete. Petals obcordate, some- 

 what emarginate, very short and inflexed. Fruit ovate, late- 

 rally compressed. Carpels with 5 prominent equal undulate 



