180 
Parietaria pennsylvanica Muhl.; Willd. Sp. Pl. iv, 955 (1805). 
In shady places: Dismal River, June 29; Forks of Dismal River, July 12; Mullen, 
July 26; Cody’s Lakes, August 11 (No. 1473). 
SALICACE. 
Salix fluviatilis Nutt. Sylva, 73 (1842); S. longifolia Muhl. Neue Schrift. Gesell. 
Naturf. Freunde Berlin, iv, 238 (1803), not Lam. 
Common along the streams: Thedford, June 15; Norway, June 23; South Dismal 
River, August 14; Mullen, July 20 (No. 1315). 
? Salix cordata Muhl. Neue Schrift. Gesell. Naturf. Freunde Berlin, iv, 236 
(1803). 
This is a common willow in Nebraska and has gone under this name, although it 
does not agree with the description in all respects. Plummer Ford, July 5 (No. 
1498). 
Salix cordata angustata (Pursh) Anders. Monogr. Sal. 159 (1867); 8S. angustata 
Pursh, F1. ii, 613 (1814). 
Collected in fruit only; but it seems to agree fully with the specimens collected 
and named by Mr, Bebb. Norway, June 22 (No, 1412); Thedford, July 16; South 
Dismal River, August 12 (No. 1329). 
Salix cordata vestita Anders. Monogr. Sal. 159 (1867). 
Neither fruit nor flowers seen. On the banks of Middle Loup, north of Mullen, 
July 19 (No. 1581). 
Populus deltoides Marsh. Arb. Amer. 106 (1785). 
According to Mr. Sudworth this is an older name for Populus monilifera Ait.) 
Here and there on the hills, near the streams: Norway, June 22; Mullen, July 19 
(No. 1411). 
CHRATOPHYLLACEA. 
Ceratophyllum demersum L. Sp. PI. ii, 992 (1753). 
Swan Lake, Grant County, August 7 (No. 1823). 
ORCHIDACES.. 
Habenaria hyperborea (L.) R. Br.; Ait. Hort. Kew, ed. 2, v, 193 (1813); Ophrys 
hyperborea L. Mant. i, 121 (1767). 
In wet meadows: Thedford, June 15 and 19, September 7; Forks of Dismal River, 
July 12 (No. 1297). 
Near Thedford: specimens not secured. 
Leptorchis loeselii (L.) MacMillan, Metasp. Minn. Val. 173 (1893); Ophrys leselii L. 
Sp. Pl. ii, 946 (1753) ; Liparis leselii L. C. Richards Lindl. Bot. Reg. t. 882 (1825). 
Gyrostachys cernua (L.) Kuntze, Rev. Gen. PI. pt. ii, 664 (1891); Ophrys cernua L. 
Sp. Pl. ii, 946 (1753). 
Not very common, in wet meadows: Plummer Ford, August 23; Thedford, August 
26 (No, 1719). 
IRIDACE4. 
Sisyrinchium bermudiana L. Sp. PI. ii, 954 (1753). 
Prairies near Thedford, June 16 (No. 1251). 
LILIACE 4. 
Allium mutabile Mx. F1.i, 195 (1803). 
Prairies, Thedford, June 15 (No. 1290). 
Polygonatum biflorum (Walt.) Ell. Bot. S. Car. & Georg. i, 393 (1817-18); Conval- 
laria biflora Walt. Fl. Car. 122 (1788). 
1 Hort. Kew. iii, 406 (1789). 
