PLATANACEAE, plane tree family 
PLATANUS, sycamore, plane tree 
Platanus occidentalis L., sycamore, American plane tree, 
buttonwood [S: incl. var. 8labrata (Fern.) Sarg., var. 
is unwarranted, Hsiao (1973) suggested that var. 
Slabrata was worthy of some form of nomenclatural 
Fecognition, based on morphometric and phytochemical 
Studies; further research is clearly necessary), p. 789 
PLUMBAGINACEAE, leadwort family 
CERATOSTIGMA 
*¢Ceratostigma plumbaginoides Bunge, ceratostigma (Dunn, 1982) 
POLEMONIACEAE, Phlox family 
COLLOMIA, collomia 
*Collomia linearis Nutt. p. 1225 
*Ipomopsis rubra (L.) Wherry 
GILIA (see IPOMOPSIS) 
IPOMOPSIS 
[S: GILIA] (Grant, 1956) 
» Standing cypress [S: Gilia rubra 
(L) A. A. Heller] (Grant, 1956), p. 1225 
S: ri, : 
Steyermark G: Great Plains Flora M: Mohlenbrock 
