NOTES ON ONION MARKINGS. 
There is a tendency in the hzematochiton-platycaule groups — 
to have the two membranes of the coats separate, thus producing 
alternate coats with ribs and no markings and the others with 
markings and no ribs. In nearly all onions with special mark- 
ings the ribs are on the delicate outer membrane only and 
soon disappear. They seem to be on the main coatin the Doug- 
lasii group. 
The platycaule-Douglasii groups evidently develop trans- 
versely-oblong meshes (acute at both ends) at times, and this 
accounts for the too many species in these groups, but the true 
limitations of the species cannot be given without more field 
study. The faint markings on the outer membrane of the Doug- 
lasii group coupled with the variable development of anceps 
markings at the base of the coat will probably settle the status 
of these species if the markings are constant as they seem to be. 
Page 9, A. anceps, add “Found abundantly at Palisade, 
central Nevada.” This species probably runs into A. Tolmiei. 
Markings of outer membrane about 1x1” or transverse when not — 
about square. The ends of the meshes are bluntly triangular, 3 
thus making the meshes hexagonal. 
The markings of A. Cusickii and what corresponds to A. — 
Tolmiei are identical on the outer membrane with the same 
markings on A. anceps, The crestsof A. Cusickii are peculiar — 
in being triangular and small horns on the corners of the pod. 
The markings on the outer membrane of A. pleianthum are 
vertically oblong with rectangular ends. The crests of this 
_ Species are central and close to the style. 
It remains to determine to which class true A. Douglasii 
belongs, but the probabilities are in favor of Tolmiei. 
The markings of A. platycaule on the outer membrane are | 
those of A. pleianthum but nearly linear, the main coat has very 
