| | Buffalo Museum of Science - Principia Botanica - Analysis of Phyllotaxis (Site not responding. Last check: 2007-11-01) |
 | | The Priapulida, a group of burrowing marine worms, possesses dental armature arranged on its proboscis in pentagonal whorls (Nichols 1967). |
 | | This tendency is responsible for the establishment, at the level of coelocanthid fishes, of the morphogenetic premise which led for example, to the five fingers of Homo and for the reduction of the ancestral strobile around five sectors of growth which led to modern pentamerous flowers. |
 | | The genetic spiral, described by the developmental sequence of leaf primordial, is often assumed to have special significance for phyllotaxis. |
| www.sciencebuff.org /principia_botanica_analysis_of_phyllotaxis.php (1244 words) |