NORTH AMERICAN SPECIES OF JUNCUS. 269 
make several additions and corrections. In the foregoing pages I have already acknowledged the 
liberality of Professors Roeper and Decaisne, who have enabled me to study the Junci of Lamarck 
and of Michaux; I have now also seen fragments of those collected by Haenke on our western coast 
from the Herbarium of Prague sent by Professors Kosteletzky and Von Leonhardi, and those ob- 
tained on the northwest coast by the Russian explorers, communicated by Director Regel of St. 
Petersburg. Thus, I believe, I have had an opportunity of examining all the original specimens of 
the older authors ; the single J Pylai, La Harpe, from the “ little island of Saint-Pierre-de-Miquelon, 
near Navtoeadlnnd” remains unknown to me. 
The request for assistance in forming an Herbarium Juncorum Boreali-Americanorum Normale 
(p. 424) has been generously responded to by twenty-three botanists, who have sent sets of 99 plants, 
to be distributed by me among the great standard herbaria of this country and of Europe, and among 
the contributing botanists themselves. They are quoted in these pages as Herb. norm. or 
Hb. norm. The largest number of species were sent by Messrs. Bolander and Kellogg of [487] 
California, Ravenel of South Carolina, and Bigelow of Michigan, and after them by Messrs. 
Porter and Smith of Pennsylvania and Chapman of Florida. My own and the whole botanical 
fraternity’s acknowledgments are due to all of them. 
9 numbers comprise 38 different species, —among them ten described here for the first 
time and twelve very rare or critical ones, and twenty important varieties; the remainder consists of 
minor varieties, different forms of the same species or variety, and in a few instances the same plant 
from different localities. The specimens are not all of equal value or beauty, in some few instances 
they are inferior, or the different specimens of the same number are sometimes not sufficiently homo- 
geneous for a collection that claims to be a standard one; but on the whole they will be found sat- 
isfactory, and many of them very perfect and better and more complete than they can be found in 
most herbaria. If my friends or the friends of botany in this country will undertake the labor of 
collecting and sending me specimens of the Junci not at all or only incompletely represented in the 
Herbarium Normale, I will cheerfully promise to do my best to arrange and distribute them in the 
same manner as in the present collection. I would, in this case, urge the importance of getting not 
only those species that are wanting in the Herb. Norm., but especially the intermediate and doubtful 
forms, that connect the different forms of such polymorphous species as J. sctrpoides or J. Canadensis, 
and similar ones. 
ADDITIONS AND CORRECTIONS. 
Page 425. Among the vegetative organs, the rootstock has been barely mentioned, while it is a most important 
an and exhibits many differences in the different species of perennial Junci. Very few of our species are annuals, 
and these all belong to the section graminifolii: J. bufonius, triformis, Kelloggit, and I believe, repens. The others 
bring forth buds from the axils of the lowest scaly leaves (Niederblae tter) at or soon after the period of flowering, and 
pinecially at the time the fruit ripens, in the form of short leaf-buds or stolons or horizontal rhizomas, which preserve 
the existence of the plant through winter while the old stock is decaying, and in the following season produce the new 
flowering stalks, and die themselves in the succeeding summer or fall when their successors are forming, so that the 
living part of the plant never gets more than a year old ; but in most species the rhizoma, often bearing the 
vestiges of the decayed flowering stems, continues to exist much longer, attached to the living plant, but desti- [488] 
tute ie vitality. The buds are very short and ascending in the cespitose species, J. acuminatus, etc. ; in the 
creeping ones they form shorter or longer stolons, fibrous (J. falcatus, J. pheocephalus) or fleshy (J. seinsudesy, and 
often bearing a bunch of leaves at their end ; in J. nodosus the stolons form thin fibres, which bear little bulbs, and 
often a series of them, the source of the stems of next season (see Herb. norm. 74, where in many specimens the old 
withered stolons with the vestiges of the decayed stems of last season and the new ones can be seen). The species of 
the first section (Junci genuini) have stout horizontal rhizomas, and none stouter than the maritime species (J. acutus 
and Remerianus), which bear upright stems at almost every node, and not at the end like most articulati. Where the 
