TERNS OF GREENE Co., Missourr 47 
3. ADIANTUM CaPILLUS-VENERIS L. Collected on cliffs 
along the James River near the southern boundary 
and possibly inside the county. This fern apparently 
is local and certainly most elusive. Although he has 
botanized in regions where it is known to occur, the 
writer has never been able to find it growing 
4. PreripIuM aQqui~tinum (L.) Kuhn. Ahuatant 
locally, especially in the northern part of the county. 
It grows usually in rather dry soil in thin scrub-oak 
woods. The habitat of this species in Missouri and in 
Maryland appears very different from that in which 
the subspecies pubescens occurs in the Rockies. There 
the bracken is found in comparatively damp woods, in 
New Mexico under aspens, but, of course, the actual 
rainfall in such situations is much lower than in the 
apparently dry woods of the East. 
5. Cuemantues Freer Moore. Collected in crevices 
of dry limestone cliffs near Willard, but said to grow 
also on sandstone in this part of Missouri. 
6. CHEILANTHES LANOSA (Michx.) Watt. On sand- 
stone cliffs at Pearl, and at Graydon Springs, Polk 
County. The species is rather rare in this region. 
7. PELLAEA ATROPURPUREA (L.) Link. Very common 
nearly everywhere except on the prairie, frequenting 
limestone cliffs or very stony, shaded ground. It often 
occurs in arid situations; the plants are then depauperate 
and the fronds shriveled. The species is not confined 
to calcareous soil, for at Graydon Springs it is plentiful 
on sandstone, in rather moist places. 
8. AspLentum Brap.eyi D. C. Eaton. There is a 
specimen of this in the U. S. National Herbarium col- 
lected at Cave Spring by Mr. J. W. Blankinship in 
1893. The writer has botanized about this locality 
several times and has searched for this fern, but without 
success. No doubt it is very rare here, and it is one of 
the rarest ferns of the Eastern United States. In Gray’s 
