Taxonomic studies in the Phacelia magellanica polyploid complex, with special reference to California members von Heckard, Lawrence R., 1923

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Taking charge of the demand side when short-supplied: Prioritized distribution of the 2004-2005 influenza vaccine to members in common of a designated high-priority group of health... von Kroff, T., Heckard, R.

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Corynebacterium parvum versus bacille Calmette-Guérin adjuvant immunotherapy of stage II malignant melanoma von LIPTON, A, HARVEY, H. A, BALCH, C. M, ANTLE, C. E, HECKARD, R, BARTOLUCCI, A. A

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Generic Realignment and Synopsis of Subtribe Castillejinae (Scrophulariaceae-Tribe Pediculareae) von Chuang, T. I., Heckard, L. R.

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Chromosome numbers of neotropical Castilleja (Scrophulariaceae: tribe Pediculareae) and their taxonomic implications von Chuang, T.I, Heckard, L.R

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A taxonomic revision of Orthocarpus (Scrophulariaceae: tribe Pediculareae) von Chuang, T.I. (Illinois State University, Normal, IL), Heckard, L.R

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New species of bee-pollinated Castilleja from Peru, with a taxonomic revision of South American members of subg. Colacus von Chuang, T.I. (Illinois State University, Normal, IL), Heckard, L.R

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CHROMOSOME NUMBERS OF SOME NORTH AMERICAN SCROPHULARIACEAE, MOSTLY CALIFORNIAN von Chuang, T. I., Heckard, L. R.

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Observations on Root-Parasitism in Cordylanthus (Scrophulariaceae) von Chuang, Tsan-Iang, Heckard, Lawrence R.

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Chromosome numbers of Orthocarpus and related monotypic genera (Scrophulariaceae: subtribe Castillejinae) von Chuang, Tsan Iang, Heckard, Lawrence R.

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Chromosome numbers and polyploidy in Orobanche (Orobanchaceae) von Heckard, L. R., Chuang, T. I.

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Systematic significance of seed-surface features in Orthocarpus (Scrophulariaceae-subtribe Castillejinae) von Chuang, T.I, Heckard, L.R

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Mimulus shevockii (Scrophulariaceae), a new species from desert habitats in southern Sierra Nevada of California von Heckard, L.R, Bacigalupi, R

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Status and distribution of Castilleja mollis (Scrophulariaceae) von Heckard, L.R. (University of California, Berkeley, CA), Ingram, S.W, Chuang, T.I

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Systematic Significance of Seed-Surface Features in Orthocarpus (Scrophulariaceae-Subtribe Castillejinae) von Chuang, T. I., Heckard, L. R.

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Mimulus norrisii (Scrophulariaceae), a new species from the southern Sierra Nevada von Heckard, L.R, Shevock, J.R

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THE PHYTOGEOGRAPHICAL SIGNIFICANCE OF SNOW MOUNTAIN, NORTH COAST RANGES, CALIFORNIA von Heckard, L. R., Hickman, J. C.

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Chromosome Numbers and Polyploidy in Castilleja (Scrophulariaceae) von Heckard, Lawrence R.

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Seed Coat Morphology in Cordylanthus (Scrophulariaceae) and its Taxonomic Significance von Chuang, Tsan-Iang, Heckard, Lawrence R.

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The Hydrophyllaceae von Heckard, L. R.

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