62 Pretz: FLorA oF LEHIGH CoUNTY, PENNSYLVANIA 
Rare at the stations named above but so general and often so 
abundant on shale, and especially limestone, that any mention of 
stations on these formations would be useless. The species may 
occupy niches or grow in large patches on outcrops but is equally 
at home on loose talus in shade or in the open. It has not been 
found growing among moss on tree trunks, but with moss on some 
outcrops it suggests strongly epiphytic tendencies. Most luxuriant 
and freely proliferous in connection with moist, mossy situations 
on large talus or ti on outcrops. Fronds 4.2 dm. (1.1-+3.1) 
long and 2.5 dm. wide represent maximum luxuriance. Fruits 
in August. Evergreen. 
On limestone and shale the tendency to prominent auricles 
and undulate margins is very pronounced.. Fronds very much 
incised have been collected. (On limestone, 134 miles northwest 
of Emaus, January 1, 1908, 1068.) Forking fronds with both 
tips proliferous have been collected. (On shale, 34 mile east of 
Jordan Bridge, October 30, 1910, 3065; 11% miles northwest of 
Kernsville, November 6, 1910, 3067.) Also fronds with auricles 
lengthened and proliferous. (On limestone, 154 miles north by 
northwest of Emaus, December 22, 1907, 1065; on shale, 14 mile 
northwest of Kernsville, November 6, 1910, 3088.) 
CHEILANTHES LANOSA (Michx.) Watt 
_  _Infair abundance 14 mile northwest of Kernsville on an outcrop 
of shale along the Jordan facing south, May 9, 1909, 176 5. Fronds 
2.3 dm. (0.9+1.4) long and 3.5 cm. wide represent average luxuri- 
ance. Fruits July. Evergreen, lasting well through the winter. 
Apparently this is not a rare species in the counties to the 
south of Lehigh but this is one of the stations limiting the extension 
of the species toward the mountains. 
DENNSTAEDTIA PUNCTILOBULA (Michx.) Moore 
General throughout, a frequent species of roadsides and edges 
of woodlands, clearings, etc. In the mountains frequently abun- 
dant in open sunny places in the woods. Sometimes growing 
from niches or crevices on outcrops. Fronds measuring 8.3 dm. 
(1.8+6.5) long and 2.1 dm. wide represent maximum luxuriance. 
Collected in mature fruit on July 12. Herbaceous, but has been 
found still green in November. 
