ENGELMANN—NORTH AM. SPECIES OF JUNCUS. 485 
the leaves or nature of the inflorescence may be.—F lowers 2 
—21 lines long; sepals broad and either obtuse, or, usually, 
acute or acuminate and even with subulate tips, the inner 
ones as long as the outer ones, but often more obtusish ; 
anthers about 1 line (in a large-flowered specimen of var. y 
even 13 lines) long, always much longer than the filament; 
capsule long mucronate, scarcely exceeding the sepals, incom- 
pletely 3-celled, by the projection of the placentz ; seeds 0.31- 
(0.33 line long, their length being equal to 2 diameters; 8 or 
9 ribs visible; reticulation close but distinct; arez smooth or 
marked with one or two delicate perpendicular lines, and thus 
similar to the seeds of J. scirpoides, which, however, have fewer 
ribs.—E. Meyer (1. c.) describes the plant very correctly, but 
suspecting that the flattened appearance of stem and leaves 
might be owing to undue pressure in drying, places it with 
doubt with J. Rostkovii, from which it is widely different. 
Var. a has leaves 1-2 lines wide, as long or longer than 
the stem; heads large, about 5 lines in diameter, usually 2 or 
3 in a cluster, or sometimes as many as 6 or 8 in a short pan- 
icle.—Leaves of var. 2 lines wide, shorter than the tall stem; 
panicle loose-flowered, somewhat erect, sometimes 6 inches in 
length. Some of the mountain forms collected by Mr. Bo- 
lander (Yosemite Valley, Cal. St. Surv. 6036, and especially 
“alpine meadows,” 6006, which is only a foot high) have 
smaller flowers 13-1} lines long, and seem to approach closely 
to J. oxymeris—— Under Hb. n. 97 two forms have been inad- 
vertently mixed, one the real var. paniculatus, and the other 
a tall (2-8 feet high) several-headed form of var. glomeratus. 
—Var. y is asmall mountain form, which with its dark heads, 
large flowers, and long protruding stigmas, resembles so 
nearly the smaller forms of J. falcatus, that a close examina- 
tion only will distinguish them ; leaves 4-3} line wide; heads 
4—5 lines in diameter, single or two together. 
51. J. CHLOROCEPHALUS, n. sp.: caulibus (pedalibus sesqui- 
pedalibus) e rhizomate brevi repente cespitosis erectis et 
foliis compressis ; capitulis multi-(15-25)floris singulis seu 
paucis glomeratis spatham membranaceam subzequantibus ; 
floribus magnis conspicue pedicellatis pallidis ; sepalis oblon- 
gis obtusis seu exterioribus et rarissime interioribus mucrona- 
tis equalibus seu interioribus paulo longioribus stamina vix 
excedentibus ; antheris longe-linearibus filamento multo 
longioribus ; stylo ovario ovato pluries longiore exserto; 
stigmata equante vel iis longiore; capsula ovata obtusa mu- 
cronata uniloculari sepalis breviore; seminibus ovatis utrum- 
que apiculatis reticulatis. 
In the higher mountains of California, Willebrand, Cal. St. 
Sury. 23385; dry places on peaks near Mount Dana, 10,000 ft. 
high, Brewer, Cal. St. Surv. 1804; along the rapid current 
