I really had hit upon a plant in a mutable period liecame evident from the discovery, which I made a year later, of two perfectly definite forms which were immediately recognizable as two new elementary species. One of them was a short-styled form : O.... The Mutation theory v. 1, 1909 - Page 219by Hugo de Vries - 1909Full view - About this book
| Charles Stuart Gager - History - 1916 - 668 pages
...((Enothera Lamarckiana) (Fig. 401.) "That I really had hit upon a plant in a mutable period became evident from the discovery, which I made a year later,...elementary species. One of them was a short-styled form: 0. brevistylis, which at first seemed to be exclusively male, but later proved to have the power, at... | |
| Charles Stuart Gager - History - 1916 - 670 pages
...Amsterdam, a large number of plants of Lamarck's evening-primrose ((Enothera Lamarckiana) (Fig. 401.) later, of two perfectly definite forms which were...elementary species. One of them was a short-styled form: O. bremstylis, which at first seemed to be exclusively male, but later proved to have the power, at least... | |
| Charles Stuart Gager - Botany - 1920 - 292 pages
...evening-primrose (CEnothera Lamarckiana) (Fig. 61). "That I really had hit upon a plant in a mutable period became evident from the discovery, which I made a year later,...seemed to be exclusively male, but later proved to have FIG. 60. — A plant of the evening-primrose ((Enothera biennis) which, by "bud sporting," has given... | |
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