Geranium is polysymmetric, in a few species the pollination organs are sigmoidally
curved, and in the Hawaiian Geranium arboreum also the corolla is monosymmetric (Albers & Van der Walt, 2007), Erodium is weakly monosymmetric, and Pelargonium strongly monosymmetric (Vogel, 1998).
We assumed the habitat quality perceived by an individual particle was the sum of the location-specific background habitat quality (exposed shell), and a term that declined sigmoidally
from near 1 at the particle's birth location toward 0 at infinite distance from the birth location.
Teeth with diplodont tricuspid crown directed lingually; long, sigmoidally
curved lateral cusps with inner lateral carina; all cusp sides finely striated by numerous cristae; small central cusp displaced labially; arched base insignificantly extended lingually and labio-basally, turned up lingually, bearing prominent tube of transversal basal canal; teeth with orthodont crown and strongly vascularized base.
Nonmonotonicity (regressibility by Appendix Equation 9(b)) was shown by 111 of 248 conventional length sigmoidally
regressible data sets (111/248 = 45%).
This sequence homology and log tissue reactivity were sigmoidally