262 BOTANICAL GAZETTE. | November, 
two species of Sium, being so nearly identical in fruit and so 
easily separated from all other genera. 
1. 8. cicutefolium Gmelin, Syst. 2.482. Stout, 2 to 6 feet 
high: leaflets 3 to 8 pairs, linear to lanceolate, sharply ser- 
rate and acuminate, 2 to 5 inches long: fruit larger in sec- 
tion and with more prominent ribs than in the next; oil-ducts 
2 to 6 on commissural side (figs. 89, 90). .S. dincare Michx. 
Apium lincare Benth. & Hook.—Throughout our range, and 
west to the Pacific. 
2, 8. Carsoni Durand, Gray’s Man. 196. Weak, 1 to2 feet 
high: leaflets 1 to 3 pairs, linear, sharply serrate, 1 to 2 inches 
long; when submersed or floating, very thin, ovate to oblong, 
usually lacinate-toothed or dissected, the leaf sometimes re- 
duced to the terminal leaflet: oil-ducts 2 to 4 on commissural 
side (figs. 91, 92). Apium Carsoni Benth. & Hook.—Penn- 
Sylvania, Connecticut, Rhode Island, and Massachusetts. 
1. B. angustifolia Koch, Deutsch. FI. 2.455. Stout, so i 
feet high: leaflets 5 to 8 pairs, linear to oblong or ovate, Sef — 
rate to Ccut-toothed, sometimes crenate: fruit } line long- 
ee angustifolium L.—Throughout our range and west- | 
ward, 3 
i 
CRANTZIA Nutt.—Fruit globose, slightly flattened lat | 
erally: carpel with 5 primary ribs, each subtended by asm ! aa 
group of strengthening cells; the laterals thick and corky; — 
the others filiform : oil-ducts solitary in the intervals, two OP — 
the commissural side: seed-section round (figs. 95; gO). 
Small perennials, creeping and rooting in the mud, with hollow 
cylindrical or awl-shaped nodose petioles in place of leaves 
simple few-flowered umbels, and white flowers. 
thick lateral wings forming a corky margin.—In bra ippi 
| ky marg a 
marshes along the coast, from Massachusetts to MississipP! 
ae i 
