Southwestern rare and endangered plants: Proceedings of the Fourth Conference

Abstract

These contributed papers review the current status of plant conservation in the southwestern U.S.

Titles contained within Southwestern rare and endangered plants: Proceedings of the Fourth Conference

• A tale of two rare wild buckwheats (Eriogonum subgenus Eucycla (Polygonaceae)) from Southeastern Arizona
• Penstemon lanceolatus Benth. or P. ramosus Crosswhite in Arizona and New Mexico, a peripheral or endemic species?
• Further elucidation of the taxonomic relationships and geographic distribution of Escobaria sneedii var. sneedii, E. sneedii var. leei, and E. guadalupensis (Cactaceae)
• Determining the population boundaries of a narrowly endemic perennial plant, Lane Mountain milk-vetch, in San Bernardino County, California
• Interagency Rare Plant Team inventory results - 1998 through 2003
• Dune communities of SE Colorado: Patterns of rarity, disjunction and succession
• Geologic associations of Arizona willow in the White Mountains, Arizona
• Relationships between rare plants of the White Mountains and the late Cenozoic geology of the Colorado Plateau
• Patterns of growth and mortality in the endangered Nichol's Turk's Head Cactus (Echinocactus horizonthalonius var. nicholii L. Benson; Cactaceae) in Southeastern Arizona
• Initial response of Arabis johnstonii Munz to fire
• Effects of a natural fire on a Kuenzler's hedgehog cactus (Echinocereus fendleri var. kuenzleri) and nylon hedgehog cactus (Echinocereus viridiflorus) population in Southeastern New Mexico
• Knowlton's cactus (Pediocactus knowltonii): Eighteen years of monitoring and recovery actions
• Conservation implications of spur length variation in long-spur columbines (Aquilegia longissima)
• A tale of two cacti-the complex relationship between peyote (Lophophora williamsii) and endangered star cactus (Astrophytum asterias)
• The importance of competition in the isolation and establishment of Helianthus paradoxus (Asteraceae)

Citation

Barlow-Irick, P.; Anderson, J.; McDonald, C., tech eds. 2007. Southwestern rare and endangered plants: Proceedings of the Fourth Conference. RMRS-P-48CD. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 135 p.