Here is presented a descriptive assessment of that pattern of development of the embryo in Polemoniaceae. The survey begins at fertilization and concludes at seed maturation. As is the case for many such surveys, the embryology of very few species have in fact been examined.
The pollen of members of Polemoniaceae displays remarkable diversity. There have been a few studies of pollen morphology that survey the entire family (Stuchlik 1967; Taylor & Levin 1975). Likewise, there have been few surveys of genera (but see treatments for Collomia–Chuang et al. 1978; Cobaea–Prather 1999; Cantua–Monfils & Prather 2004). Descriptions and SEMs of a number of species are scattered in the taxonomic and palynological literature. This later group has never been summarized, so it is difficult to know what has and has not been examined or where those description are published.
Here is provided a summary of species previously examined and provide data on those that have gone uninvestigated.
The taxonomy of Polemoniaceae has been the subject of exceptional debate and instability. Provided here is the classification and taxonomy put forward by Porter & Johnson (2000), with a few modifications. The purpose of this section is to provide descriptive summaries of the family, subfamilies, tribes, genera and species, in a more or less monographic framework.