1905] Bartlett,— A new Juncus 51 
lanceolate, acuminate, with hyaline margins; stamens six, about one- 
half as long as the perianth; anthers pale yellow, shorter than the 
filaments; capsule 2 mm. long, trigonous-obovoid, concealed by the 
closely appressed perianth; placentae not meeting in the axis; 
stigmas red-brown, reaching almost to tip of perianth; seeds few, 
ovoid, 0.5 mm. long by o.2 mm. broad, coarsely reticulate in about 
16 rows, areolae longitudinally oblong, 2-24 times as long as broad. 
The type specimens of Juncus monostichus were collected south of 
Anderson, Indiana, by Mr. Charles Piper Smith. He could not refer 
them to any described species, and very kindly gave me his material 
for further investigation. It was found to be closely related to Juncus 
dichotomus and Juncus secundus, but differed from both in its very 
small capsules, long basal leaves and large, longitudinally reticulate 
seeds. 
Besides the type material, which has been divided between the 
Gray Herbarium and the writer’s herbarium, there is a sheet in the 
Gray Herbarium from central Arkansas (F. L. Harvey, no. 9) which 
is referable to Juncus monostichus. The Arkansas plant is mature, 
but sterile. The capsules of the Indiana plant contain undeveloped 
ovules, and from one to ten mature seeds. Whether or not this ster- 
ile tendency is characteristic of the species, can be determined only 
by an examination of more material. 
The range is, of course, undetermined. Probably a large part of 
the plants of the Mississippi basin which have been determined as 
Juncus secundus belong to the new species. Juncus dichotomus is in- 
cluded in S. Coulter’s “Catalogue of the Flowering Plants and Ferns 
of Indiana,” upon the authority of Dr. J. Schneck, whose collections 
were passed upon by Gray. Dr. Schneck’s material should be re- 
examined, however, as it seems extremely improbable that the range 
of Juncus dichotomus extends as far west as Indiana. The writer will 
be glad to examine western plants which have been referred to either 
of the above species. 
GRAY HERBARIUM. 
