Downloads provided by UsageCounts
doi: 10.1086/330306
1. The young staminate and ovulate strobili can be distinguished by the difference in breadth, number of sporophylls, and number of meristematic points. 2. There is probably a single archesporial cell giving rise to a group of cells, one of which becomes the megaspore mother cell. 3. There are four potential megaspores, the lowest one becoming the embryo sac, whose development agrees with the accounts of other cycads in the main points. 4. The "spongy tissue" is an active, nutritive tissue, adding to its width by division of its cells as it is encroached upon by the embryo sac. 5. In its final degeneration, the cells of the "spongy tissue" nearest the embryo sac are first attacked, and the smaller cells outside them take their place, becoming large, swollen, and nutritive in function.
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 18 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Top 10% | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 10% | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
| views | 3 | |
| downloads | 5 |

Views provided by UsageCounts
Downloads provided by UsageCounts