60 Pretz: Flora oF LEHIGH COUNTY, PENNSYLVANIA 
Vicinity of spring near Waldheim, 4% mile southwest of Mountain- 
ville, June 13, 1908, 1248. Vicinity of bog 1 mile south by south- 
west of Mountainville, June 14, 1908, 1259. Second streamlet 
134 miles southwest of Mountainville, June 28, 1908, 1302. Aban- 
doned ore pits west of above station, May 29, 1909, 1857a. Near 
Gruver’s, along third streamlet, 13g miles east by northeast of 
Mountainville, June 15, 1910, 2545a. 
All of the stations are on the South Mountains. Inclined 
to abundance at the third, fourth, and sixth stations. A plant 
standing 2.7 dm. high has been collected and represents maximum 
luxuriance, though plants approaching these figures are not in- 
frequent. A plant with the sterile segment 7.5 by 8.cm. has been 
collected and is closely approached by other plants in the writer’s 
herbarium. Plants 8 cm. high with clearly defined characters 
have been collected. Has been found well out of the ground but 
not unfolded on April 11 and has practically disappeared late in 
July. Collected with ripe fruit on May 29. Variable with very 
suggestive forms. 
BOTRYCHIUM OBLIQUUM Mulhl. 
The same remarks used in connection with B. dissectum apply 
also to this species. Specimens have been collected that exceed 
the measurements given under that species. | 
Both this and B. dissectum are very variable and forms sug- 
gesting intermediates have been collected. Sometimes varying 
in abundance locally, the habitats of both species appear identical, 
though certain forms of B. obliquum are apparently associated 
with the wet shaded bogs. 
BotrRYCHIUM SIMPLEX E. Hitchcock 
Near Gruver’s, along third streamlet, 134 miles east by 
northeast of Mountainville, June 15, 1910, 25450. 
Plants collected at the above station have been referred to 
this species. Some doubtful material from another station, which 
may belong here, has been withheld. R.C. Benedict in a recent 
revision of the Botrychiums observes that they constitute ‘‘a 
complex group”’ and that ‘‘the question of specific limits is by no 
means settled.’’ An active interest in the observations on this 
group has apparently developed, which will undoubtedly lead to 
