| 单词 | Oenothera biennis |
| 例句 | Stem and foliage glabrous, or with sparse spreading hairs Evening Primrose, Oenothera biennis. 7b. The Plants of Michigan Simple Keys for the Identification of the Native Seed Plants of the State Evening Primrose; Night Willow-herb Oenothera biennis Flowers—Yellow, fragrant, opening at evening, 1 to 2 in. across, borne in terminal leafy-bracted spikes. Wild Flowers Worth Knowing Among them are some of its near allies, the common and the small flowered evening-primrose, or Oenothera biennis and O. muricata. Species and Varieties, Their Origin by Mutation MacDougal also obtained a more or less distinct mutant of Oenothera biennis. Darwin and Modern Science Oenothera biennis was introduced about 1614 from Virginia, or nearly three centuries ago. Species and Varieties, Their Origin by Mutation The blade shows numbers of convexities on either surface, the whole surface being undulated in this manner; it lacks also the brightness of the ordinary evening-primrose or Oenothera biennis. Species and Varieties, Their Origin by Mutation One has been already alluded to; it pertains to the common evening-primrose or Oenothera biennis, and one is a species belonging to another genus of the same family, the great hairy willow-herb or _Epilobium hirsutum. Species and Varieties, Their Origin by Mutation Its immediate predecessor must have been the subgenus Onagra, which is considered by some authors as consisting of a single systematic species, Oenothera biennis. Species and Varieties, Their Origin by Mutation The European types of Oenothera biennis and O. muricata are in the same condition. Darwin and Modern Science Such is the case with the mutative origin of Xanthium commune Wootoni from New Mexico and of Oenothera biennis cruciata from Holland. Species and Varieties, Their Origin by Mutation |
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