52 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Specimens examined: 
CauirorNiA: Moist places, near Mendocino, Mendocino County, Pringle, August 
5, 1882; Chico, Butte County, Mrs. Ro M. Austin, in 1883; Antioch, Contra 
Costa County, VM. A. Curran, May, 1884; Adeline Station, Bioleiti, in 1891; 
Crystal Springs, San Mateo County, Adice Hastwood, May, 1896. 
19. Eryngium articulatum Hook. Lond. Jour. Bot. 6: 232. LS47. 
EE. harknessii Curran, Bull. Calif. Acad. Sei. 1: 155. 1885. 
Erect, 3 to 7 dm. high, dichotomously branching above, usually 
with a pedunculate head in the forks; basal and lower stem leaves 
reduced to very long (7.5 to 25 cm.) nodose petioles, with or without a 
small lanceolate nearly parallel-veined blade (from entire to spinulose- 
serrate); upper stem leaves sessile and opposite, sometimes more or 
less laciniate at base; heads globose to short oblong, more or less 
purplish or blue; bracts lanceolate, cuspidate tipped, spiny-toothed 
below, 12 to 18 mm. long, as long as the heads or longer; bractlets 
tricuspidate (sometimes with a pair of small accessory teeth below), 
the middle one much the largest, longer than the sepals; fruit) with 
lanceolate cuspidate-acuminate calyx lobes + to 5 mm. long. 
Type locality, ‘stony edges of the Spokane River, and Skitsoé and 
Coeur d’ Alene lakes,” Idaho; collected by Geyer, no. 583, August and 
September, 1843-44; type in Herb. Brit. Mus., duplicate in Herb, 
Gray. 
From northern Idaho, through Washington and Oregon, to central 
California. 
Specimens examined : 
Ipano: Shores of Lake Cceur d’ Alene, altitude 640 meters, Letberg 548, August 
15, 1895; moist ground near Moscow, /fenderson, in L804. 
WASHINGTON: Ohympia, Henderson 2518, 2519; near Pullman, Whitman County, 
Piper 1559, August 12, 1895. 
OreGon: Rogue River V alley, Wilkes’ Haped. 1187; same station, formell, July 16, 
1887; Woodville, Jackson County, [lowell 734, August 18, 1888; Aspen Lake, 
near Klamath Lake, Applegate 464, July 25, 1895. 
CALIFORNIA: Suisun Marsh, Solano County, /furkness, July, 1885; near Mount 
Shasta, Miller, July, 1886; Suisun Marsh, Greene, September 29, 1889; Goose 
Lake Valley, Mrs. Rh. M. Austin, August, 1895. 
The discovery of E. articulatian in its type locality has enabled us to clear up the 
confusion that has arisen in reference to this species, which has become a perplexing 
aggregate. Leiberg’s specimens seem to be exact duplicates of those of Geyer. It is 
evident that the numerous later collections that have been named J. artieniatune 
have been wrongly referred, and must be looked for elsewhere. In connection with 
the original description Hooker publishes a field note of Geyer, which describes the 
habit of the plant so well that we quote it as follows: 
‘In April the young plants are wholly submerged, and present the appearance of 
some articulated Juncus, the leaves, or rather the petioles, being similarly terete and 
jointed. On emerging above the water these petioles expand into lamin at the top, 
retaining the jointed swollen character in the costa. The radical petioles are 8 to 10 
inches long. Those of the stem, in proportion as they are out of the water, become 
flattened and the margin spinuloso-ciliate.”’ 
