| Call number | Item |
| Q | Science (Go to start of category) |
| QH-QR | Biological Sciences (Go to start of category) |
| QK | Botany (Go to start of category) |
| QK477.2 .A6 | ![[Info]](https://onlinebooks.library.upenn.edu/info.gif) Tree-Ring Bulletin (partial serial archives) |
| QK477.2.A6 | Tree-Ring Research (partial serial archives) |
| QK479 .A7 | Arnoldia (full serial archives) |
| QK479 .H3 | Bulletin of Popular Information (full serial archives) |
| QK480 .U52 W55 | Willowwood Journal (partial serial archives) |
| QK481 .H8 | Handbook of the Trees of the Northern States and Canada East of the Rocky Mountains: Photo-descriptive (Lowville, NY: The author, 1907), by Romeyn Beck Hough (page images at HathiTrust) |
| QK481 .M63 | The North American Sylva: or, A Description of the Forest Trees, of the United States, Canada and Nova Scotia (6 volumes, first 3 by Michaux and translated by Hillhouse; last 3 by Nuttall; Philadelphia: J. Dobson (and other publishers on last volumes), 1841-1849), by François André Michaux and Thomas Nuttall, trans. by Augustus L. Hillhouse (page images at HathiTrust) |
| QK481 .R6 | Tabular Keys for the Identification of the Woody Plants (Champaign, IL: Garrard Press, c1941), by Florence Bell Robinson (page images at HathiTrust) |
| QK482 .L932g 1900 | A Guide to the Trees (Toronto: W. Briggs, c1900), by Alice Lounsberry, illust. by Ellis Rowan (multiple formats at archive.org) |
| QK484 .C2 | The Distribution of Forest Trees in California (1972), by James R. Griffin and William Burke Critchfield (page images at HathiTrust) |
| QK484 .C2 J48 | The Silva of California (second volume in Memoirs of the University of California; Berkeley: The University Press, 1910), by Willis Linn Jepson |
| QK484 .C2 J5 | The Trees of California (first edition, c1909), by Willis Linn Jepson (page images at Cornell) |
| QK484 .I3 V67 1960 | Illinois Wild Flowers (second printing (revised), 1960), by John Voss and Virginia S. Eifert (page images at HathiTrust) |
| QK484 .M2 A3 2008 | Forest Trees of Maine (Maine Forest Service centennial edition, 2008) (PDF files at state.me.us) |
| QK484 .M5 O88 1956 | Michigan Trees: A Handbook of the Native and Most Important Introduced Species (reprint of revised edition; Ann Arbor: University of Michigan Press, 1956), by Charles Herbert Otis, contrib. by George Plumer Burns (page images at HathiTrust) |
| QK484 .R4 R6 | Trees and Shrubs of Roger Williams Park (Providence: Roger Williams Park Museum, 1928), by Maribelle Cormack (page images at HathiTrust) |
| QK486 .P8 L58 | Rare and Endemic Trees of Puerto Rico and the Virgin Islands (USDA Forest Service Conservation Research Report #27; 1980), by Elbert L. Little and Roy O. Woodbury (page images at HathiTrust) |
| QK488 .E6 | The Trees of Great Britain and Ireland (7 volumes; Edinburgh: Privately printed, 1906-1913), by Henry John Elwes and Augustine Henry |
| QK492 .K59 | The Forest Flora of New Zealand (1889), by Thomas Kirk (page images in New Zealand) |
| QK492 .M25 | The Forest Flora of New South Wales (8 volumes; 1904-1924), by J. H. Maiden |
| QK495 .A14 B87 1831 | A Selection of Hexandrian Plants, Belonging to the Natural Orders Amaryllidae and Liliacae (London: R. Havell, 1831-1834), by Priscilla Susan Bury, contrib. by Robert Havell (page images at illustratedgarden.org) |
| QK495 .B8 L4 | The Genus Canarium in the Pacific (Bernice P. Bishop Museum Bulletin #216; Honolulu: The Museum, 1955), by P. W. Leenhouts (page images at HathiTrust; US access only) |
| QK495 .C11 L54 1839 | Cactearum Genera Nova Speciesque Novae et Omnium in Horto Monvilliano Cultarum ex Affinitatibus Naturalibus Ordinatio Nova Indexque Methodicus (in Latin; Paris: J. Loss, 1839), by Charles Antoine Lemaire (page images at HathiTrust) |
| QK495 .C74 | Die Hieracien Mittel-Europas: Monographische Bearbeitung der Piloselloiden mit Besonderer Berücksichtigung der Mitteleuropäischen Sippen (in German; Munich: R. Oldenbourg, 1885), by Carl Nägeli and Albert Peter |
| QK495 .C74 B27 | The American Species of Crepis: Their Interrelationships and Distribution as Affected by Polyploidy and Apomixis (Carnegie Institution of Washington publication #504; 1938), by E. B. Babcock and G. Ledyard Stebbins (page images at HathiTrust) |