Plant Systematics and Evolution, Vol. 217, No. 3/4 (1999), pp. 259-277 (19 pages) A series of strains of the homozygous species Oenothera grandiflora (characterized by the genome BB and plastome III) ...

New mutational segregations from Oenothera mut. Erythrina de Vries: George H. Shull. Oe. mut. erythrina de Vries, when selfed, is known to produce in every progeny two types, one repeating the parent, ...

I LOVE plants that change colour after they open, as evening primroses do. Choose carefully, and the days of late summer will be enlivened by large, translucent saucers of yellow and apricot, ...

If it is a native wildflower it must be good? Not always. The White Evening Primrose (Oenothera speciosa), commonly known as the Pink Evening Primrose or Pink Ladies, is a low-growing herbaceous, ...

IT may be said at once that the facts in this volume represent perhaps the most compen-dious and extensive experimental treatment of hereditary phenomena which has yet been accom-plished in one ...

-- Dear Harvey: I have seen this pink flowering plant everywhere. Is it a weed or a wildflower and can I grow it in my own garden? Thank you. – Bonnie S. I love the question is it a “weed or a ...

I had hiked from my campsite to the rim of the Picketwire Canyon to watch the canyon fill with shadows and the sky fill with stars. Walking back in the dark, I noticed flowers that had not been open ...

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This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more information, visit the Smithsonian's ...

Sous leurs airs délicats, ces petites merveilles jaunes sont de véritables guerrières du jardin. Résistantes à tout (ou presque), elles transforment n'importe quel coin en tableau éclatant, sans ...