177 
Sarcobatus vermiculatus (Hook.) Torr. Emory’s Rep. 150 (1848); Batis (?) 
vermiculatus Hook. Fl, Bor. Amer. ii, 128 (1888). 
This was seen on the railroad embankment near Mullen July 24, but no specimens 
were secured. 
POLYGONACES. 
Eriogonum annuum Nutt. Trans. Amer, Phil. Soc. n. ser. v, 184 (1833-37). 
On the sand hills northeast of Whitman, July 31; Mullen, July 19 and 22; Cody’s 
Lakes, August 10; Natick, September 11 (1580). 
Rumex venosus Pursh, FI. ii, 733 (1814). 
On the railroad embankment near Thedford, June 14 and 17 (No, 1298). 
Rumex britannica L. Sp. Pl. i, 334 (1753). 
Cody’s Lakes, August 10; Plummer Ford, August 22 (No. 1670). This has not 
hitherto been reported from Nebraska. 
Rumex persicarioides L. Sp. Pl. i, 385 (1753). 
Along Middle Loup and in the wet valleys of Grant County: Mullen, July 18; 
northeast of Whitman, July 31; Cody’s Lakes, August 10; Thedford, August 29 
(No. 1572). 
PK oO 
Polygonum aviculare L. Sp. Pl. i, 362 (1753). 
Common throughout the region: Forks of Dismal River, July 12; Cody’s Lakes, 
August 9; Thedford, September 7 (No. 1555). A form growing in shade, with very 
thin leaves, may belong here. As no fruits were found, the identification is some- 
what doubtful. Mullen, September 15 (No. 1772). 
Polygonum litorale Link, Schrad, Journ. Bot, i, 54 (1799), 
Common along the railroad embankment near Mullen, July 11 and September 15 
(No. 1771). 
Polygonum camporum Meisn. in Mart. Fl. Bras. v, pt. i, 21 (1855). 
Along the railroad at Thedford, September 7; Mullen, September 13 (No. 1763). 
Polygonum ramossisimum Mx. Fl. i, 237 (1803). 
The typical form was collected at Mullen, July 18 and September 16; Cody’s 
Lakes, August 10 (No, 1579). A very slender form with appressed branches was col- 
lected in Grant County, August 4 (No, 1820). Another form with small leaves some- 
what resembling the preceding in appearance was found at Mullen, September 14 
(No. 1769), A few specimens were nearly prostrate. Mr. Small says that they belong 
probably to what has been named P. ramosissimwn patulum by Engelmann in manu- 
script. These specimens look very different from those referred to the same variety 
in my Black Hills collection, having very thin leaves, resembling somewhat those 
of P. erectum, but this may be explained by the fact that they were growing in 
shade. Mullen, September 14 (No. 1768). 
Polygonum punctatum leptostachyum (Meisn.) Small, Bull. Torr. Club, xix, 
356 (1892); Polygonum acre leptostachyum Meisn. in DC. Prodr. xiv, 108 (1856). 
The style is often 2-parted and the achenes are lenticular and smooth and shining. 
In some places the plants were simple, slender, and scarcely rooting: Mullen, 
August 17; Thedford, September 9; Forks of Middle Loup, July 26 (No. 1602), In 
other places, the plants were very much branched and the leaves larger: West 
Cody’s Lake, August 10 (No. 1672). 
Polygonum lapathifolium i. Sp. Pl. i, 360 (1753). 
The more common form with stout stem and large leaves was collected on river 
banks: Mullen, July 17; Forks of Middle Loup, July 28; northeast of Whitman, 
July 31 (No. 1571). No. 1629 is a form with smaller leaves, the whole plant more 
yellowish: Grant County, July 31. Another form, with low stem, short and dense 
spikes, and larger flowers was collected in dry lakes in Grant County, September 20 
(No. 1794). 
