Mar., 1911.] An Ohio Station for Phacelia dubia. 
3°3 
AN OHIO STATION FOR PHACELIA DUBIA. 
Robert F. Griggs. 
Phacelia dubia (L) Small has been included in the Flora of 
Ohio since Newberry’s Catalog which reported it on the authority 
of Sullivant. No other collector, however, has since found it and 
the state herbarium has long maintained an empty cover for it. 
The writer was therefore glad to discover it growing on the ridge 
a mile west of Clark’s Crossing in Fairfield County and later to 
find Sullivant’s specimen in the Gray Herbarium at Harvard 
labeled simply “Lancaster, Ohio, Sullivant” in Asa Gray’s 
handwriting. 
The station is a narrow ridge of Black Hand Sandstone from 
which all of the overlying rock of the Logan formation has been 
removed leaving it bare or clothed with a thin soil. It bears a 
growth of fair sized trees mostly pine and rock or black oak and 
numerous rather xerophytic herbs of which the most typical is 
the “Wild Sweet Pea,” Tephrosia virginiana. In view of this 
habitat the manual notation “ Shaded Banks ” is rather misleading. 
Similar habitats are to be found occasionally throughout the 
Sugar Grove region but the writer has seen the plant nowhere else 
except at “Kettle Hills,” a mile or two north of the present 
station. Sullivant probably obtained his plant from one of these 
stations, and since no one else has found it, it may be doubted if 
it occurs elsewhere in the state. 
This supposition is supported by the general range of the 
species for it , seems to be confined to the Allegheny region from 
New York and Ohio southward, although it is given in the manuals 
as “New York to Kansas and southward.” Through the whole 
of this range it is rare and local being known from only a few 
stations in each state. In New York it is known only near James- 
ville where it was discovered a few years ago by Mrs. L. L. Good- 
rich growing on limestone rock. In Pennsylvania it is reported 
by Porter from Lancaster and Perry Counties. In Maryland 
specimens from the Great Falls of the Potomac are marked 
“rare.” In Tennessee Gattinger knew it only from the vicinity 
of Nashville and in Alabama Mohr cites only two counties with 
the notation “Local and infrequent.” 
The record from Kansas is based on a specimen collected by 
Hitchcock in Cherokee County in the extreme southeastern comer 
of the state. This is, however, not Phacelia dubia but Phacelia 
hirsuta Nutt, and corresponds almost exactly with Nuttall’s plant 
which came from Arkansas. The writer has, however, made a 
careful study of the plants and the descriptions and has satisfied 
himself that the two arc not specifically separable but that hirsuta 
is simply a more hairy subspecies. It occurs with the species 
