BOTANY. ^ 223 
Juncus ARTICULATUS, Linn.; Gray, l. c. J. lamprocarpus, Eh. Near the Copper Mines, New 
Mexico, June; Bigelow. Var. cRAssIFOLIUS: foliis crassis compressis vix articulatis. Sonora ; 
Schott. Var. MULTIFLORUS: capitulis paucis 20—30-floris. Fronteras, Sonora; Thurber. 
Juncus noposus, Linn.; Gray, l. c. Laredo, on the Lower Rio 2%, June; Schott. Var. 
MEGACEPHALUS, Torr. Fl. N. York, 2, р. 327. San Elceario on the middle. Rio Grande ; Bigelow. 
Along the Gila, Sonora ; Thurber, Schott. ч 
JUNCUS TENUIS, Willd. sp. 2, р. 214; Torr. Fl. N. York, 2, p. 327. Hills at the Copper Mines, 
New Mexico; Thurber. 
JUNCUS MARGINATUS, Ziostk. Junc. p. 38, t. 2, f. 3. Western Texas; Wright. (No. 1923 in 
part. 
JUNCUS LONGISTYLIS (n. sp.): culmo erecto simplici compresso foliato ; foliis planis gramineis ; 
capitulis paucis 4-6-floris in panicula sub-simplici dispositis; sepalis lanceolatis mucronatis 
capsula obovato-oblongo obtusa mucronata paullo longioribus ; seminibus oblongis utrinque 
acutis ecaudatis. Near the Copper Mines, New Mexico, June; Bigelow. (No. 1924, Wright.) 
Culms from a rather stout root-stock, 12—18 inches high, slender, distinctly compressed. Leaves 
flaccid, 1-13 line wide, obscurely nerved ; the radical ones 6-8 inches long, those of the culm 
(2-3 in number) shorter. Heads 4-8 in a contracted or oblong panicle, the bracts at the base 
ovate, scarious, abcut ав long as the sepals. Stamens 6. Style more than half as long as the 
ovary. Capsule usually about one-fifth shorter than the sepals. A very distinct species. J. 
marginatus, to which it is nearest related, differs in the usually much more numerous heads, 
triandrous flowers, short style, obtuse inner sepals and subglobose capsule. No. 857 of Fend- 
ler's New Mexican collection seems to be a variety of this species, with only two or three closely 
approximated heads. 
JUNCUS BUFONIUS, Linn, Sp. p. 466; Kunth, Enum. 3, p. 353. Moist places, Sonora and 
California ; Thurber. 
LUZULA CAMPESTRIS, DO.; Torr. Bot. Whippl. Rep. p. 143. Pine woods near Monterey, Cali- 
fornia, May ; Parry. : 
PONTEDERIACEJE. | 
HrrERANTHERA LIMOSA, Vahl, Enum. 2, p. 44; Pursh, Fl. 1, p. 32; Kunth, Enum. 4, p. 122. 
Wet places along the Limpio, and at the Copper Mines; also in Sonora; flowering through the 
summer and autumn. (No. 1927, Wright.) 
ScHoLLERA GRAMINIFOLIA, Willd. Heteranthera graminea, Vahl, l. c.; Torr. Fl. N. York, 2, 
р. 313, t. 133. Near Matamoras, in Tamaulipas, on the lower Rio Grande, Мау; Schott. The 
specimens appear to have grown in very shallow water, or on muddy ground. The stems are 
scarcely an inch long, and the leaves are only about twice that length. 
HYDROCHARIDACEJE. 
LIMNOBIUM SPONGIA, Rich. in Mem. Instit. 2, р. 66, t. 8. Hydrocharis spongiosa, Bosc. Near 
San Antonio, Texas ; Schott. 
“ 
COMMELYNACE A. 
CoMMELYNA VIRGINICA, Linn. Sp. p. 61; Gray, Man. ed. 2, p. 486. С. angustifolia Miche. Fl. 
1, р. 24. Moist thickets and borders of rivers. Western Texas, New Mexico, and Chihuahua; 
flowering throughout the season. 
