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examined, viz, from three localities in 1893, from Scott’s Bluff in 1891, and also in 
Mr. Herbert Webber’s specimens from Thedford in 1889. These latter were sent 
to Dr. Vasey for identification, by whom they were named A. unilaterale Vasey & 
Scribner. Dr. Vasey afterwards transferred them to 4. violaceum majus. The type 
specimens of this variety seem to be tufted as in 4. tenerum and not spreading by 
a creeping rootstock as in the Nebraska specimen. The hairiness of the joints of the 
spikelets is also lacking in the type specimens, but otherwise they are very similar. 
Valley, Grant County, July 20 and 31. Also seen at Mullen and Thedford (No, 1619). 
Agropyron tenerum Vasey, Bot. Gaz. x, 258 (1885). 
Rare: Dismal River, July 11 (No. 1516). 
Agropyron caninum (L.) Rem. & Schult. Syst. Veg. ii, 756 (1877); Triticum 
caninum L. Sp. Pl. i, 86 (1753). 
In wet meadows, northeast of Whitman, July 29 (No. 1617). 
Elymus macounii Vasey, Bull. Torr. Club, xiii, 119 (1886). 
It may be this should be included in Agropyron. Perhaps Elymus and Agropyron 
should be made one genus, as there is no character that will absolutely separate 
them. Meadows in Grant County, July 29 (No. 1625). 
Elymus striatus Willd. Sp. Pl. i, 470 (1797). 
In shady places: Plummer Ford, July 3 (No. 1476). 
Elymus canadensis L. Sp. Pl. i, 83 (1753). 
The more typical form was collected at the Forks of Dismal River, July 13 (No. 
1548). Another form with narrow, involute leaves and small spikes was growing 
common on the hills: Plummer Ford, July 13; Mullen, July 17; Middle Loup, July 
26 (No. 1477). In a damp place at the foot of a sand hill near Middle Loup, Hooker 
County, July 22, a few specimens were found of a form which had spikes up to 2 or 
3 dm. long, and leaves 10 or 12 mm. wide (No, 1806.) This has been called variety | 
robustus, but without description. 
Elymus virginicus L. Sp. Pl. i, 84 (1753). 
This is a variety with a slender steni, the spike slender, upright but long-exserted. 
It resembles a form named in manuscript by Dr. Vasey FE. virginicus minor, but it is 
intermediate between this and F. canadensis intermedius, from which it differs in 
having the flowers smooth and the lower glume as in L, virginicus. Rare: Mullen, 
July 17 (No. 1553). : 
Hordeum pusillum Nutt. Gen. i, 87 (1818). 
I took this for H. nodosum L., but Mr. Dewey, of the United States Department_of 
Agriculture, has pointed out a good and easy character by which to distinguish the 
two. In H. nodosum, the outer glumes are narrow, gradually acuminating upward ; 
in H. pusillum they widen from a narrow base, and then acuminate abruptly into an 
awn.. Prairies: Thedford, June 14 (No. 1267). 
Hordeum jubatum L. Sp. Pl. i, 85 (1753). 
This worthless grass was collected only near Natick, June 20 (No. 1367). 
CONIFERS. 
Juniperus virginiana L. Sp. Pl. ii, 10389 (1753). 
Along Dismal River. Apparently, it has been rather common, but most of the 
trees are cut down. Plummer Ford, July 3; Dismal River, June 27 (No. 1428.) 
SALVINIACEA., 
Azolla caroliniana Willd. Sp. Pl. v, 541 (1810). 
This interesting little plant was found in pools near a spring at Plummer Ford, 
August 24, growing together with Lemna minor and L. perpusilla (No. 1728). 
