ENGELMANN—NORTH AM. SPECIES OF JUNCUS. 483 
2} diameters; about 8 ribs are visible on the side; the net- 
work of the surface and the cross-lines of the arew are very 
delicate but quite distinct. 
Var. ais often 4 feet high, with a stem 3 lines wide, and 
leaves 3 or 4 or sometimes even 6 lines broad; panicle 4-8 
inches long; heads in some forms, and also in the original 
Haenkean specimen, few-flowered, in others _many-flowered ; 
seeds usually slender and almost fusiform. Var. 8, similar to 
the last, with leaves 2-3 lines wide, is distinguished by its 
showy, glistening, golden-straw-colored panicles, about 4 
inches in length; sepals almost nerveiess; capsules larger 
than in the other forms and longer than the sepals, thus 
approaching the following species. Var. y, the mountain 
and eastern form of the species, is smaller, with fewer heads, 
either few-flowered and in a small panicle (about 1} or 2 
inches long), or many-flowered, 3-4 lines in diameter and 
1-5 or 8 in number; leaves usually 3 to 1} lines wide. Var. 
6 may be considered a large flowered north-western form 
of the latter; flowers 12 lines or more in length; seeds 0.25— 
0.26 line long, thicker than in the other forms and with short 
and abrupt points. War. e, with its very flat and somewhat 
curved, sword-shaped leaves, and, usually, few large dark-col- 
ored heads of triandrous flowers, looks quite peculiar, but 
flower, fruit and seed are the same asin the other forms. I 
find plants of the same habit and with the same kind of leaves 
and heads among the} different forms of J. Mertensianus and 
of J. pheocephalus, but the fruit and flowers will always dis- 
tinguish them. The seeds in this variety are intermediate 
between those of the last and those of the other forms.— 
Meyer (Linn, 3, 373) describes J. ensifolius with an obovate 
obtuse capsule; I do not find it so, but suppose he had a spe- 
cimen of J. Mertensianus in view, for which this shape of the 
capsule is quite characteristic. 
49. J. oxyMERIS, n.sp.: caulibus (2-3-pedalibus) e rhizo- 
mate repente erectis seu ascendentibus compressis; foliis a 
latere compressis plus minus distincte nodosis; panicula su- 
pradecomposita patula seu stricta; capitulis pauci-(5—10)floris 
pallidis; floribus pedicellatis; sepalis lineari-lanceolatis acu- 
minato-aristatis, interioribus szpe paulo longioribus stamina 
6 quarta parte superantibus capsula lanceolata rostrata unilo- 
culari plerumque brevioribus; antheris longo-linearibus fila- 
mento duplo longioribus; stigmatibus ovarium lanceolatum 
apice attenuatum cum stylo ei equilongo equantibus exsertis ; 
seminibus ovato-oblanceolatis apiculatis areis levibus reticu- 
latis.—J. acutiflorus, floribus solito longioribus, Benth. PI. 
Hartw. 341. 
Sacramento Valley, Cal., Hartweg, 2017, San Francisco 
and Mariposa, Cal., Bolander, Hb. n. 95. 
