181 
A form approaching the next, from which it differs little, except in its smaller, 
searcely amplexicaul leaves and its 1- or 2-flowered peduncles. Hillside about 100 
meters above the bed of Dismal River, near Plummer Ford, July 5 (No, 1483). 
Polygonatum biflorum commutatum (Rom, «& Schult.) Morong, Bull. Torr.Club, 
xx, 480 (1893); Convallaria commutata Rom. & Schult, Syst. Veg. vii, 1671 (1830). 
Hillside, Norway, June 22 (No. 1408). 
Vagnera stellata (L.) Morong, Mem. Torr, Club, v, 114 (1894); Convallaria stellata 
L. Sp. PL. i, 316 (1753). 
Among bushes on the banks of Middle Loup, Thedford, June 17 (No. 1340). 
Yucca glauca Nutt. Fraser’s Cat. (1813). 
On the sand hills: Thedford, June 19; Plummer Ford, July 5 (No, 1359). 
Smilax herbacea L. Sp. V1. ii, 1030 (1753). 
Hillsides: Plummer Ford, July 3; Forks of Middle Loup River, July 26; Seneca, 
September 16 (No, 1455). 
COMMELINACE. 
Commelina virginica L. Sp. Pl. ed. 2, i, 61 (1762). 
Not uncommon in the sand hills: Thedford, June 17; Dismal River, June 29 
(No, 1345). 
Tradescantia virginiana L. Sp. Pl. i, 288 (1753). 
In eastern Nebraska this plant grows only on lowlands with alluvial soil, but here 
it is found from the tops of the sand hills down into the valleys, most commonly on 
the tops. Thedford, June 18, ete. (No, 1580). 
JUNCACEA. 
Juncus balticus montanus Engelm. Trans. St. Lonis Acad. ii, 442 (1866), 
Not uncommon. ‘The typical form of this variety was found near Thedford, June 
21 (No. 1401). A more slender form, with wiry stems and more elongated clusters, 
was collected near Natick, June 20 (No, 1876). 
Juncus tenuis Willd. Sp. Pl. ii, 214 (1799). 
This plant is very variable, Even this collection displays a great variety of forms, 
Perhaps the most typical one was collected at Plummer Ford, July 4; Forks of Dis- 
mal River, July 11; northeast of Whitman, August 1 (No. 1487). A taller form with 
broad sheaths and narrow, involute or channeled leaves, sepals longer than the pods 
and panicle dense and many-flowered, at Mullen, July 26; Natick, June 20 (No. 1374), 
A slender form, greener, and with open panicle, at Natick, June 20; Plummer lord, 
July 3 (No. 1845). A similar form, but with very slender semi-flowered or 1-flowered 
pedicels and thread-like leaves, Plummer Ford, July 3 (No. 1464). No, 1318 is an 
unusually low form: Thedford, June 16; northeast of Whitman, August 1. No. 1841 
is similar, but greener and more tufted: Mullen, July 18, September 9. 
Juncus nodosus IL. Sp. Pl. ed. 2, i, 466 (1762). 
Common: Norway, June 22; Natick, June 20; Forks of Dismal River, July 12; 
Thedford, August 26 (No. 1369). All these specimens are low. On the Dismal River, 
June 27, were found taller (4-6 dm, high), more slender ones (No, 1441). 
Juncus torreyi Coville, Bull. Torr, Club. xxii, 803 (1895); Juncus nodosus mega- 
cephalus Torr. FI], N.Y. ii, 826 (1843), not J. megacephalus Curtis, 1835, 
The most common form in Nebraska, having a few crowded heads, was collected 
south of Whitman, August 4 (No, 1817). A form with many heads in ® compound 
panicle, was found at Mullen, July 18 (No, 1575). 
Juncus marginatus Rostk. Monogr. June, 38 (1801). 
This is comparatively rare in Nebraska. It was collected near Cody’s Lakes, 
August 9 (No. 1827). 
