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Full-Text Articles in Life Sciences
Haplopappus I : Hall's Illusion, Ronald L. Hartman, M. A. Lane, Gregory K. Brown
Haplopappus I : Hall's Illusion, Ronald L. Hartman, M. A. Lane, Gregory K. Brown
Ronald L Hartman
Meeting abstract of “Haplopappus-I : Hall Illusion“ in American Journal of Botany, presented at the Annual Meetings of the Botanical Society of America.
Haplopappus 2: Reality!, M. A. Lane, Ronald L. Hartman, Gregory K. Brown
Haplopappus 2: Reality!, M. A. Lane, Ronald L. Hartman, Gregory K. Brown
Ronald L Hartman
Meeting abstract of “Haplopappus 2: Reality!“ in American Journal of Botany, presented at the Annual Meetings of the Botanical Society of America.
Reclassification Of North American Haplopappus (Compositae: Astereae) Completed: Rayjacksonia Gen Nov, M. A. Lane, Ronald L. Hartman
Reclassification Of North American Haplopappus (Compositae: Astereae) Completed: Rayjacksonia Gen Nov, M. A. Lane, Ronald L. Hartman
Ronald L Hartman
Rayjacksonia R. L. Hartman & M. A. Lane, gen. nov. (Compositae: Astereae), is named to accommodate the ''phyllocephalus complex,'' formerly of Haplopappus Cass. sect. Blepharodon DC. The new combinations are R. phyllocephalus (DC.) R. L. Hartman & M. A. Lane, R. annua (Rydb.) R. L. Hartman & M. A. Lane, and R. aurea (A. Gray) R. L. Hartman & M. A. Lane. This transfer completes the reclassification of the North American species of Haplopappus sensu Hall, leaving that genus exclusively South American. Rayjacksonia has a base chromosome number of x = 6. Furthermore, it shares abruptly ampliate disk corollas, deltate …
Relationships Among Astereae (Compositae) Genera Having X=6, M. A. Lane, Ronald L. Hartman
Relationships Among Astereae (Compositae) Genera Having X=6, M. A. Lane, Ronald L. Hartman
Ronald L Hartman
Meeting abstract of "Relationships Among Astereae (Compositae) Genera Having X=6" in American Journal of Botany, 1985, presented at the Annual Meetings of the Botanical Society of America.
Pseudostellaria Sierrae (Caryophyllaceae), A New Species From California, R. K. Rabeler, Ronald L. Hartman
Pseudostellaria Sierrae (Caryophyllaceae), A New Species From California, R. K. Rabeler, Ronald L. Hartman
Ronald L Hartman
Pseudostellaria sierrae is described a, new from northern California. Glabrous stems and leaves. a V-shaped apical notch in each ligulate petal. five yellow anthers, and seeds with minute projections oil each tubercle are features useful in distinguishing. P. sierrae from P. jamesiana (Torrey) W. A. Weber & R. L. Hartman, the congener widely distributed in the western United States. Pseudostellaria sierrae is found in mixed oak or conifer forests.
Studies In Rocky-Mountain Species Of Cymopterus (Apiaceae), Ronald L. Hartman
Studies In Rocky-Mountain Species Of Cymopterus (Apiaceae), Ronald L. Hartman
Ronald L Hartman
Meeting abstract of “Studies in Rocky-Mountain Species of Cymopterus (Apiaceae)“ in American Journal of Botany, 1986, presented at the Annual Meetings of the Botanical Society of America.