1853. Characters of some new genera of plants, mostly from Polynesia. III. 48-54, 127-129. 1857. On the age of a large Californian coniferous tree. III. 94-97. 1861. Characters of some Compositæ in the collection of the United States South Pacific Exploring Expedition. V. 114-146. 1861. Enumeration of a collection of dried plants made by L. J. Xantus in Lower California. V. 153-173. 1861. Characters of new or obscure species of plants of Monopetalous orders in the collection of the United States Pacific Exploring Expedition. V. 321-352; VI. 37-55. 1864. A revision and arrangement (mainly by the fruit) of the North American species of Astragalus and Oxytropis. VI. 188-236. 1865. Characters of some new plants of California and Nevada, from the collections of Prof. William H. Brewer and Dr. Charles L. Anderson. VI. 519-556. 1870. A revision of the Eriogoneæ (with J. Torrey). VIII. 145-200. 1870. Reconstruction of the order Diapensiaceæ; revision of the North American Polemoniaceæ; miscellaneous botanical notes and characters. VIII. 243-296. 1872. Notes on Labiatæ; determinations of a collection of plants made in Oregon by Elihu Hall. VIII. 365-412. 1873. Characters of new genera and species of plants. VIII. 620-631. 1873. Notes on Compositæ and characters of certain genera and species, etc. VIII. 631-661. 1874. Notes on Compositæ and characters of certain genera and species. IX. 187-218. 1874. A synopsis of the North American Thistles; notes on Borraginaceæ; synopsis of North American species of Physalis; characters of various new species. X. 39-78. 1875. A conspectus of the North American Hydrophyllaceæ. X. 312-332. 1876. Characters of Canbya (n. gen.) and Arctomecon; characters of new species. With two plates. XII. 51-84. 1879. Characters of some new species of Compositæ from Mexico; some new North American genera, species, etc. XV. 25-52. 1880. Notes on some Compositæ; some species of Asclepias; a new genus of Gentianaceæ; miscellanea of the North American flora. XVI. 78-108. 1882. Studies of Aster and Solidago in the older Herbaria; Novitiæ Arizonicæ, etc. XVII. 163-230. 1883. Characters of new Compositæ with revisions of certain genera and critical notes; miscellaneous genera and species. XIX. 1-96. 1885. A revision of some Borragineous genera; notes on some American species of Utricularia; new genera of Arizona, California, and their Mexican borders, and two additional species of Asclepiadaceæ; Gamopetalæ Miscellaneæ. XX. 257-310. 1886. A revision of the North American Ranunculi; Sertum Chihuahuense; Miscellanea. XXI. 363-413.