110 MISSOURI BOTANICAL GARDEN. 
swollen below the umbel, a few long scattering hairs above, 
sometimes sparingly branched at the base or below the um- 
bel; rays 5, 3 to 4 em. long, trichotomous, then several 
times dichotomous; stem leaves spatulate obovate, serrate, 
obtuse or retuse, the lower attenuate into a petiole, .5 to 4 
em. long, 8 to 15 mm. wide; umbel leaves similar, but larger ; 
floral leaves elliptical or obovate, somewhat oblique, smaller 
and wider in proportion than the stem leaves; involucre 2 
mm. high, pubescent inside beneath the glands with long, 
straight hairs; lobes small, oblong, fimbriate, ciliate; glands 
4, transversely elliptical, yellowish, 1 mm. wide, .5 mm. 
long; the fifth gland replaced by a small fimbriate lobe; 
bracts 5, slender, 1 mm. long, plumose at the apex with 
long hairs; stamens about 15; capsule subglobose, cordate 
below, smooth, 2.5 to 3 mm. high, 3.5 to 4 mm. wide; 
cocci rotund; sulci deep; styles 1 mm. long, free, bifid 
above, clavate stigmatose ; seeds ovoid subglobose, acute at 
apex, yellowish brown; 2 mm. long, 1.5 mm. in diameter ; 
areolae on the surface .2 to .8 mm. wide, their walls prom- 
inent, caruncle transversely elliptical, vertical. — Waste 
places in the lake regions of the northeast United States and 
Canada. Introduced from Europe. — Plate 26. 
Specimens seen from Canada (Short, 1852; Fowler, Kingston, Ont., 
1885; Allen, River du Loup, Queb., 1890; Northrop, Notre Dame du Lac, 
225a, 1887); Pennsylvania (Martindale, Philadelphia, 1876; Porter, Erie, 
1868); New York (Paine, L. Onondago, 1864; Clinton, Buffalo; Coville, 
Norwich, 1886; Troy; Sartwell, Penn Yan and Lake Erie; Hayden; 
Kennicott, Buffalo); Michigan (Rusby, Detroit, 1884; Wheeler, Mack- 
inac Is., 1881, 1892; Millspaugh, Mackinac Is., 1898; Holton, Mackinac 
Is., 1850) ; Maine (Fernald, Farmington, 1894); Ohio (Sartwell, Maumee; 
Werner, Painesville, 1891, 1892); Illinois (Hall, Athens, 1867) ; Vermont 
(South Haven, 1896). 
Also reported from Illinois (Patterson, Cat. Pl. Ill. 37, 1876); and 
Pictou, Nova Scotia (Sommers, Flora Nova Scotia 207). 
D. EHsulae. Stem leaves alternate, usually entire; glands 4 or 5, their 
outer edge not rotund, entire, usually more or less bicornute; 
calyx inconspicuous, triangular or discoid, seeds carunculate, 
oblong or ovoid, circular or rhombic in cross-section. 
* Main stem short; leaves crenulate, most of those in the tricho- 
26 
