28 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
6. Hydrocotyle australis C. & R., sp. nov. 
H. canbyi Britton & Brown, Ill. Fl. 2: 540. 1897, as to habit sketch, not as to 
description. 
Umbels few-flowered, proliferous, with 8 to 6 verticils, sometimes 
slightly branched; pedicels 2 to 4mm. long; fruit 2 mm. long, slightly 
broader, rounded at base. 
Type locality, shore of Lake Worth, Florida; collected by Curtzss, 
no. 5876, in 1895; type in U.S. Nat. Herb. 
Virginia (Dismal Swamp), Florida, Texas. 
Specimens examined : 
VireintaA: Dismal Swamp, Pollard 871, May 30, June, 1896. 
Fiorwa: Chapman; near Jacksonville, Curtiss 992, 4964; shore of Lake Worth, 
Curtiss 5378, May 8, 1895. 
Mississtppr: Horn Island, Tracy 4443, June 1, 1898. 
Texas: Del Rio, Nealley 244, September, 1890; river near San Antonio, Dewey, 
June 11, 1891; near Kerrville, Kerr County, Heller 1935, June 26-30, 1894. 
7. Hydrocotyle cuneata C. & R., sp. nov. Fic. 1. 
Umbels few-flowered, proliferous, sometimes slightly branching; 
pedicels very short; fruit 2mm. long, 3 to 4 mm. broad, tapering to 
the pedicel by a very distinct cuneate base. 
Type locality, Montezuma Well, Arizona; collected by D. 7. Mae- 
Dougal, no. 575, in 1891; type in U.S. Nat. Herb. 
Western Texas to southern California and extending northward to 
the region about San Francisco, 
Specimens examined: 
Texas: New Braunfels, Lindheimer 1, June, 1847. 
New Mexico: Wright 1383, 
Arizona: Palmer, in 1869; Sanoita Valley Springs, Lemmon 2710, June, 1882; 
Montezuma well, MacDougal 575, August 7, 1891; Catalpa, MacDougal, 
September, 1891. 
CALIFORNIA: Suisun Marsh, Solano County, Greene, in 1883; San Luis Obispo, 
Lemmon 57, June, 1887; Colorado Desert, San Diego County, Orcutt, April, 1889; 
Santa Barbara, Mrs. Bingham; Sonoma Creek, Mrs. Hutchings, August, 1898. 
8. Hydrocotyle americana L. Sp. Pl. 1: 234. 1753. 
Stems filiform, branching and creeping, often bearing small fusiform 
tubers; leaves thin, round reniform, crenate-lobed and lobes crenate, 
shining; few-flowered umbels axillary and almost sessile; fruit about 
1 mm. broad, with evident ribs and no oil-bearing layer; seed section 
broadly oval. 
Type locality, ‘‘ septentrionalis America;” collected by A‘alm. 
From northeastern Canada to Minnesota and south to the mountains 
of North Carolina. 
Specimens examined: 
Canapa: Bass River, New Brunswick, Fowler, August 9, 1875. 
Marne: Foxcroft, valley of Piscataquis River, Fernald 320, July 23, 1895. 
Massacuusetts: Amherst, Mrs. A. Stevens, July 2, 1895. 
Connecticut: Greens Farms, Pollard 224, August 7, 1894; Fairfield and Mitford, 
Eames, in 1894 and 1895. 
