• Arboretum Progress

      McKittrick, Robert T.; Boyce Thompson Southwestern Arboretum (University of Arizona (Tucson, AZ), 1982-01)
    • Arboretum to Receive Research Grant

      Bierner, Mark; Boyce Thompson Arboretum (University of Arizona (Tucson, AZ), 2006-06)
    • Arctic Boreal Wetlands

      Minckley, W. L.; Brown, David E.; Department of Zoology, Arizona State University; Arizona Game and Fish Department (University of Arizona (Tucson, AZ), 1982)
    • Arctic-Boreal Grasslands

      Brown, David E.; Makings, Elizabeth; Arizona State University (University of Arizona (Tucson, AZ), 2014-01)
    • The Arizona Hedgehog Project

      Siegwarth, Mark D. (University of Arizona (Tucson, AZ), 2014)
      An intergovernmental agreement was signed on August 26, 2008 between the Arizona Department of Transportation (ADOT) and Boyce Thompson Arboretum (BTA) for the Arizona Hedgehog Project. The project was to transplant individuals of the Arizona hedgehog cactus (Echinocereus triglochidiatus var. arizonicus or AHC) from the US Highway 60 ADOT project area to Boyce Thompson Arboretum and conduct a 5-year research study on the AHC to learn more about how to increase success of future salvage efforts. In addition, the project included the development of interpretive/educational materials including printed materials and signage to explain the project to the more than 75,000 annual visitors who visit the Arboretum. The transplant sites at the Arboretum offer an excellent opportunity for informing the general public, adults and children alike, about the importance of conserving the Arizona hedgehog and other endangered species. As stated above, the Arizona Hedgehog project is comprised of two distinct but overlapping parts: the physical movement of the plants to Boyce Thompson Arboretum and an extended study of transplantation success. In brief, we first evaluated the plants in situ at the US Highway 60 ADOT project location, then removed the plants and transported them to BTA. Although there were to be two different plantings, fall and spring, delays and fewer than the expected number of AHC needing salvage mandated that all plantings be done in the fall. Finally, we evaluated the success of the transplants over a 5-year period. This was essentially an observational study. Germplasm was shared with other researchers, which will provide additional information.
    • Arizona's Own Palm: Washingtonia filifera

      Miller, Victor J.; Arizona State University (University of Arizona (Tucson, AZ), 1983)
    • Arizona: The Land and the People

      University of Arizona (Tucson, AZ), 1986
    • Aspects of the Reproductive Biology of Agave lechuguilla Torr.

      Freeman, C. Edward; Reid, William H.; Department of Biological Sciences, University of Texas at El Paso (University of Arizona (Tucson, AZ), 1985)
      Agave lechuguilla Torr. is a small, widespread century plant characteristic of the Chihuahuan Desert growing from central Mexico to southern New Mexico. Most reproduction is vegetative. Flowering occurs primarily in May and June. The inflorescence shaft grows as rapidly as 2 dm/day, and reaches full height (about 2.6 m) in three to four weeks. Energy for flowering is stored almost entirely in the leaves. Flowers open in late afternoon, and last for approximately 96 hours. Anthers dehisce 24 hours after a flower opens and the stigma becomes receptive at approximately 66 hours. Nectar is produced during the second and third nights. The anatomy of the flower is of interest in that the pollen tubes do not penetrate tissue but have an unobstructed path to the ovules. The species is capable of self-pollination, but not apomixis.
    • Assisting Nature with Plant Selection

      Holzworth, Larry K.; Tucson Plant Materials Center, USDA Soil Conservation Service (University of Arizona (Tucson, AZ), 1979-08)
    • Australian Acacias Used for Landscaping in Arizona

      Starr, Greg; Department of Plant Sciences, University of Arizona (University of Arizona (Tucson, AZ), 1983)
    • Autumn in the Season for Seeds - DELEP/BTA Collecting Trips in 2012

      Johnson, Matthew B.; Desert Legume Project, The University of Arizona/Boyce Thompson Arboretum (University of Arizona (Tucson, AZ), 2012-12)
    • AVIS: A Prototype Arid Vegetation Information System

      Holland, Mariana; School of Renewable Resources, University of Arizona (University of Arizona (Tucson, AZ), 1979-11)
    • The Bat, the Blossom and the Biologist

      Howell, Donna J.; Far Flung Adventures (University of Arizona (Tucson, AZ), 1985)
    • Biogeographical Distribution of Salt Marsh Halophytes on the Coasts of the Sonoran Desert

      Yensen, N. P.; Glenn, E. P.; Fontes, M. R.; Environmental Research Laboratory, University of Arizona (University of Arizona (Tucson, AZ), 1983)
      Twenty-four species of intertidal halophytes were recorded from 15 coastal salt marshes of the Sonoran desert. The Pacific salt marshes were found to be the most diverse, with 14.4 species per marsh, while the western Gulf of California had 8.9, and the eastern Gulf, 13.7. A low species diversity was found in the northwestern Gulf due to the absence of mid- and high-zoned halophytes. High-zoned species were geographically patchier on all coasts. The species formed three elevational groups within the intertidal zone: LOW: Spartina foliosa Trin, Distichlis palmeri (Vasey), Rhizophora mangle L., Laguncularia racemosa (L.), Avicennia gerimans (L.), Salicornia bigelovii Torr., S. europaea L., and Batis maritima L.; MID: Salicornia virginica L., Suaeda californica S. Wats., laumea carnosa (Less.), Sesuvium verrucosum Raf., Limonium californicum (Boiss.1 and Cressa truxillensis H.B.K.; HIGH: Salicornia subterminalis Parish, Allenrolfea occidentalis (S. Wats.), Frankenia grandifolia Cham. and Schlect, F. palmen S. Wats., Monanthochloe littoralis Engelm., Distichlis spicata (L.), Suaeda fruticosa (L.), Atriplex barclayana (Benth.), A. canescens (Pursh) and Sporobolus virginicus (L.). Thirty additional species were recorded in the supralittoral zone.
    • Biomass Potential in Arizona

      Foster, Kennith E.; Rawles, R. Leslie; Karpiscak, Martin M.; Office of Arid Lands Studies, University of Arizona (University of Arizona (Tucson, AZ), 1980)
    • The Bitter Wild Cucumber of the Gila River

      Crosswhite, F. S. (University of Arizona (Tucson, AZ), 1986)
    • Bizarre Seed Patterns in Plants of the Indian Arid Zone

      Bansal, Rajinder P.; Sen, David N.; University of Jodhpur, India (University of Arizona (Tucson, AZ), 1981)
      A comparative study of seeds of 46 plant species which abound in cultivated fields of the Indian arid zone has been made. A variety of new seed patterns discovered, some bizarre, are described. Seeds were categorized on the basis of their weights into five groups. The seeds of Polycarpaea corymbosa were found to be lightest of the species studied. Most frequently the seed weight varied among species of the same genus and among different genera of the same family. Similarly great variations in seed size were met. In general, lighter seeds were small in size and heavier ones large. The seed surfaces varied from smooth and glossy to ornamented and rough. The seeds of Farsetia hamiltonii possessed wings which increased their surface area. The color of the seeds in most cases was brownish- yellow to dark brown. Only few seeds were black. Description and illustration of the diversity will perhaps hasten an understanding of the developmental sequences and adaptive values (under arid conditions) of the bizarre seed patterns.
    • Bladderwort, Arizona's Carnivorous Wildflower

      Johnson, William T.; Arizona State University (University of Arizona (Tucson, AZ), 1987)