236 SYSTEMATIC BOTANY. 



ribs, the latter more prominent, winged, and each bearing a single 

 row of prickles, with single vittse beneath. Carpophore entirely 

 free. 



D. CAROTA (Carrot}. Stem hispid, branching; leaves bi- or tri-pinnati- 

 fid ; segments pinnatifid ; leaflets lanceolate or linear ; leaflets of the invo- 

 lucre pinnatifid ; flowers white, sometimes yellowish ; the central flower in 

 each umbellet abortive, rose-colored. Root conical. Common in cultiva- 

 tion. " July. 



13. Osmorhiza. Calyx-margin obsolete. Petals oblong, entire ; 

 the cuspidate point inflexed. Styles conical at base. Fruit very long, 

 linear, clavate, attenuate at base. Carpels with 5 acute, bristly ribs. 

 Intervals without vittse. Commissure with a deep bristly channel, y. 



O. BREVISTYLIS (Hairy Cicely). Stem erect, branching; leaves biter- 

 nately divided ; segments pinnatifid, hairy ; flowers white ; fruit somewhat 

 tapering, with the persistent styles at length converging. In woods, 1-3 

 feet high. May-June. 



14. Conium. Calyx-margin "obsolete. Petals obcordate, with a 

 short inflexed point. Fruit ovate, with compressed sides. Carpels 

 with 5 prominent, equal, undulate-crenulate ribs ; the lateral ones mar- 

 ginal. Intervals without vittre. Seeds with a deep, narrow groove in 

 the face. 



C. MACULATUM (Poison HemlocK). Stem smooth, branching, hollow, 

 spotted ; leaves decompound, bipinnately divided ; leaflets lanceolate, pinnati- 

 fid, with acute lobes ; involucel of 3-5 unilateral leaflets ; flowers small, 

 white, in terminal umbels ; fruit smooth. A poisonous weed, 3-8 feet high, 

 in waste places. July- August. 



15. Coriandrum. Calyx with 5 conspicuous teeth. Petals obcor- 

 date, inflexed at the point ; outer ones much larger, bifid. Fruit glo- 

 bose. Carpels cohering together, with 5 depressed, primary ribs, and 

 4 secondary, more prominent ones. Seeds concave on the face. 



C. SATIVUM (Coriander). Glabrous ; leaves bipinnately divided ; lower 

 ones with broad, cuneate segments ; upper ones with linear segments ; in- 

 volucel 3-leaved, unilateral ; flowers white ; carpels hemispherical. A gar- 

 den plant, 2-3 feet high. 



Order XL. ARALIACE^: (Ginseng Family]. 



Herbs, shrubs, or trees. Leaves compound or simple, exstipu- 

 late. Flowers in umbels, which are often arranged in racemes 

 or panicles. Calyx adherent to the ovary, with a small, entire, or 

 5-toothed limb. Petals 5-10, very rarely wanting, inserted in a 

 disk which crowns the ovary. Stamens as many as the petals, 



