212 THE FLORA. 



2. OEYPTOT'^NIA. Hone-wort. 

 Oalyx teeth obsolete. Petals with an inflexed point. Fruit linear-oh- 

 long or ovate-oblong. Seeds with 5 obtuse ribs, contracted at the sides. 

 ■ — y A smooth herb with 3-parted leaves. Umbels compound, with very 

 unequal rays, white flowers, no involucre, and few-leaved involucels. 



C. Canaden'sis. St. l-2f. high, erect. Leaflets large, the side ones often 2-parted 

 or lobed. Common in moist woods. July. 



8. OSMOKHI'ZA. Cicely. 



Calyx teeth obsolete. Fruit linear-oblong, club-shaped, tapering to the 

 base, crowned with the conical styles ; carpels each with 5 equal, acute, 

 bristly ribs, and a deep groove on the face. — y Leaves bi-ternately divid- 

 ed, with the umbels opposite. Involucre few-leaved ; involuoel 4-7- 

 leaved. Flowers white. Fruit an inch in length. Height about 2f. 

 May, June. (Figs. 244, 487-9.) 



O. longis'tylls. Sweet C. Styles thread-like, nearly aa long as ovary. Plant downy. 



The root has an agreeable spicy flavor. 

 O. trevis'tylis. Bitter 0. Styles conical, 5 times shorter than ovary. Plant hairy. 



Less interesting than No. 1. (See Fig. 490.) 



4. OONI'UM. Poison Hemlock. 



Calyx teeth obsolete. Fruit ovate, flattened on the sides, each carpel 

 with 5 wavy-orenulate ribs on the back, and a deep narrow groove on the 

 inner face. — CD Herbs with large, decompound leaves, with very many 

 leaflets. Involucre and involucels of 3-5 leaves, the latter one-sided. 

 Flowers white. (Figs. 65, 491, 492.) 



0. macula'tum. Stem spotted with purple, glanoous, about 4f. high. Leaves bright 

 green, leaflets email, lanceolate, pinnatifid. Umbels terminal, the involucels 

 with the inner half wanting. JiiTUi, July. 



5. EEIGENl'A. Pepper-and-salt. 



Oalyx limb wanting. Petals flat, entire. Carpels (half-fruits), S-ribbed, 

 contracted on the face, forming together a fruit much broader than long. 

 — If Pvoot tuberous. See Fig. 333. 



