430 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
2. Pteryxia foeniculacea (Torr. & Gr.) Nutt.; Coult. & Rose, Contr. Nat. Herb. 
7: 171. 1900. 
Cymopterus foeniculaceus Torr. & Gr. Fl. 1: 624. 1840. 
Type Locatity: “On rocks, Blue Mountains of Oregon.”” Collected by Nuttall. 
RanGE: Eastern Oregon, eastern Washington, and adjacent Idaho. 
SPECIMENS EXAMINED: Blue Mountains, Horner 305; Piper 2340; Tukanon River, Lake & 
Hull 535; Almota, Piper 2795; Wawawai, Elmer 770; without locality, Vasey 309%; Clarks 
Springs, Spokane County, Areager 119. 
ZONAL DISTRIBUTION: Arid Transition and Upper Sonoran. 
HESPEROGENIA. 
1. Hesperogenia stricklandi Coult. & Rose, Contr. Nat. Herb. 5: 203. 1899. 
Tyre Locatity: “Mount Rainier, Washington.’’ Collected by Allen. 
RanGE: Mount Rainier, Washington. 
SPECIMENS EXAMINED: Mount Rainier, Allen 278; Flett, August, 1897; Strickland in 1896. 
ZONAL DISTRIBUTION: Hudsonian. 
OROGENIA. 
1. Orogenia linearifolia S. Wats. Bot. King. Explor. 120. pl. 14. figs. 1 to 3. 1871. 
Type Locauity: “Damp shaded ridge of the Wahsatch, north of Parley’s Park, 7,500 
feet altitude,’ Utah. Collected by Watson. 
Rance: From Washington and Idaho to Oregon, Utah, and southwestern Colorado. 
SPECIMENS EXAMINED: Falcon Valley, Suksdorf in 1882; east of the Cascade Mountains, 
Wilkes Expedition. 
SIUM. 
1. Sium cicutaefolium Schrank, Baier. Fl. 1: 558. 1798. 
Stum lineare Michx. Fl. 1: 167. 1803. 
Sium pusillum Nutt.; Torr. & Gr. Fl. 1: 611. 1840. 
Type LocaLity: Not determined. 
Rance: In swamps from Newfoundland to Virginia, west to British Columbia and 
northern California, Europe. Asia. 
SPECIMENS EXAMINED: Sumas, Lyall in 1858-59; Seattle, Piper, September, 1892; 
Tacoma, Flett 144, 220; Lindsley’s ranch, Clarke County, Henderson 375, Trout Lake, 
Suksdorf 185; Spokane County, Suksdorf 922; North Palouse River, Vasey, July 17, 1901; 
Pullman, Piper; Rock Lake, Lake & Hull 536; Toppenish, Cotton 768. 
ZONAL DISTRIBUTION: Transition. 
COELOPLEURUM. 
Leaflets obtuse, very thick... .2222.2000000000000002022-0----..- 1. C. maritimum. 
Leaflets acute or acuminate, thinner..........2.........-.......-.. 2. €. longipes. 
1. Coelopleurum maritimum Coult. & Rose, Bot. Gaz. 18: 145. 1888. 
TyPE Loca.ity: ‘‘ Wet ocean bluffs, Long Beach, Ilwaco (Pacific County), Wash.”’ Col- 
lected by Henderson. 
Rance: Ocean bluffs near the mouth of the Columbia River. 
SPECIMENS EXAMINED: Ilwaco, Henderson, September, 1892; Piper 4995. 
ZONAL DISTRIBUTION: Humid Transition. 
2. Coelopleurum longipes Coult. & Rose, Contr. Nat. Herb. 7: 142. 1900. 
Type Locatiry: “Tide marshes near Astoria, Oregon.’ Collected by Howell. 
RANGE: Seacoast swamps, from the Columbia River to southern Alaska. 
SPECIMENS EXAMINED: Seattle, Piper 567; Tacoma, Piper; Union City, Piper in 1890; 
Fairhaven, Suksdorf 1200; Hoodsport, Henderson, August 15, 1890. 
ZONAL DISTRIBUTION: Humid Transition. 
Formerly confused with the more northern, larger-fruited @. gmelini (DC.) Ledeb. 
