Publication: Leafl. Bot. Observ. Crit. 2: 219. 1912.
Notes: FNA7: "Polyctenium fremontii is highly variable in fruit size and the compactness of the fruiting raceme, but in habit, flower size and color, leaf morphology, indumentum, fruiting pedicel length and orientation, number of ovules per ovary, and basically every other aspect of the plants, it is quite constant. If one examines only the types of those two taxa and that of P. fremontii, it seems that perhaps two or three taxa might be recognized. Upon careful study of extensive material, one realizes that only one taxon, instead of three or more, is represented. The alleged differences between P. fremontii and P. williamsiae in characters other than fruit morphology do not hold. As for fruit size, it was said to be 2-4 × 2-2.5 mm in P. williamsiae and (4-)6-13(-20) × 1-2 mm in P. fremontii. Fruit lengths in material annotated by Rollins as P. fremontii are 2-7 mm in Tiehm 8108 and 3.5-11 mm in Ertter 5726, both at GH. Furthermore, the compactness of the infructescence can be equally variable, and in the holotype of var. confertum the