Native bees are a rich natural resource in urban California gardens von Frankie, Gordon W, Thorp, Robbin W, Hernandez, Jennifer, Rizzardi, Mark, Ertter, Barbara, Pawelek, Jaime C, Witt, Sara L, Schindler, Mary, Coville, Rollin, Wojcik, Victoria A

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Floristic Surprises in North America North of Mexico von Ertter, Barbara

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A re-evaluation of Potentilla drummondii and P. breweri (Rosaceae), with the new species Potentilla morefieldii von Ertter, Barbara

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Revisionary studies in Ivesia (Rosaceae: Potentilleae) von Ertter, B. (University of California, Berkeley, CA.)

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Leaf indumentum types in Potentilla (Rosaceae) and related genera in Iran von Faghir, Marzieh B, Attar, Farideh, Farazmand, Ali, Ertter, Barbara, Eriksen, Bente

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Ivesia aperta var. canina (Rosaceae), new from California von Ertter, Barbara

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Ecological Patterns of Bees and Their Host Ornamental Flowers in Two Northern California Cities von Frankie, Gordon W., Thorp, Robbin W., Schindler, Mary, Hernandez, Jennifer, Ertter, Barbara, Rizzardi, Mark

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A re-evaluation of the Horkelia bolanderi (Rosaceae) complex, with the new species Horkelia yadonii von Ertter, B. (University of California, Berkeley, CA)

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Notes on Goodmania and Oxytheca (Polygonaceae: Eriogonoideae) [Nomenclature] von Ertter, Barbara

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Lectotypification of Chorizanthe watsonii (Polygonaceae: Eriogonoideae) von Ertter, Barbara, Tiehm, Arnold

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Ecological Patterns of Bees and Their Host Ornamental Flowers in Two Northern California Cities von Frankie, G W, Thorp, R W, Schindler, M, Hernandez, J, Ertter, B, Rizzardi, M

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Post-manual adjustments in Californian Lomatium (Apiaceae) von Constance, L. (University of California, Berkeley, CA.), Ertter, B

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Notes on Ivesia rhypara von Ertter, B

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Paronychia ahartii (Caryophyllaceae), a new species from California von Ertter, B

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A revision of the genus Oxytheca Nutt. (Polygonaceae) von Ertter, B

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Potentilla basaltica (Rosaceae), a new species from Nevada von Tiehm, A, Ertter, B

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Neviusia cliftonii (Rosaceae: Kerrieae), an Intriguing New Relict Species from California von Shevock, James R., Ertter, Barbara, Taylor, Dean W.

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Obituary: Annetta Mary Carter (1907-1991) von Ertter, B

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MONARDELLA BENEOLENS (LAMIACEAE), A NEW SPECIES FROM THE CREST OF THE SOUTHERN SIERRA NEVADA, CALIFORNIA von Shevock, James R., Ertter, Barbara, Jokerst, James D.

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A new species of Artemisia [packardiae] (Asteraceae: Anthemidae) from southeastern Oregon von Grimes, J.W, Ertter, B

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