Description of the Herbarium There are some 10,800 specimens in the main Sullivant herbarium and over 4000 in special collections not incorporated. (Adding over 4000 in exsiccata sets which belonged to Sullivant but were not issued by him, the total collection, excluding hepatics, is estimated at 18,800.) On page iii of this introduction will be found a list of the special collections. It is important to recognize that many bibliographic types of Sullivant are in these separate collections and therefore do not appear in this index. The only one of Sullivant's own exsiccatae in his main herbarium is Musci Alleghanienses. Mention of some of the larger foreign collections in the herbarium will illustrate its world-wide content. W. P. Schimper sent specimens from 1844 to at least 1867, a total of over 750 species and varieties, and a vast quantity of duplicates. Some of the latter were distributed from the Farlow herbarium and others are still being processed for exchange. On the labels are Schimper's published names, manuscript names cited in synonymy, and manuscript names not taken up. Over 200 species of South American mosses came from Richard Spruce in 1869. Some are the early version of Musci Amazonici et Andini, with Spruce's, not Mitten's, names. Others are unnamed but numbered as in Mitten's Musci Indiae Orientalis. Still others are without numbers or names. James attempted to process these and many now in the herbarium are labelled by him. Other South American specimens are among the 450 species received from Ernst Hampe in the 1860s. There is an irregular but interesting set of some 300 species of "Antarctic" mosses received from J. D. Hooker in 1860. Unlike the standard sets, about a third of the labels bear the names of Gunn, Colenso, Oldfield, and others as collectors. The 450 species of mosses from Hooker and Thomson's Herbarium Indiae Orientalis have been separated from the main herbarium, as have the 750 mosses of the United States Exploring Expeditions. Other collections from notable world voyages were acquired from Montagne, whom Sullivant called "a prompt, liberal & generous correspondent." Generous also were Dozy, Molkenboer, and Blume, who sent some 250 species from Java. There are 58 specimens received from Schwaegrichen in 1842, and 19 "types" of Carl Müller, as well as other duplicates from his herbarium. A notable feature of the herbarium is the wealth of drawings and notes. It is probably safe to say that Sullivant made sketches of every species new to him. Many are finished drawings and some of these are initialed by August Schrader, a draughtsman employed full time by Sullivant from 1856. Many of the notes are by Lesquereux, who was associated with Sullivant from 1848. It has amused the compilers of this index to come upon common American specimens which Sullivant, when he was learning to identify mosses, sent simultaneously to several European bryologists. In one lot of 50 specimens named by Schwaegrichen, Montagne, and Wilson, these experts disagreed on the correct names of 20. Martha Abbott participated with me in the rehabilitation of the herbarium and the preparation of the indexes. Carolyn Hesterberg was the expert typist. Geneva Sayre Farlow Herbarium December, 1982 ii