130 
type specimen in Kew Herbarium from Liebmann, marked A. 
Chilense, Kif., var. pilosulum ; and in Synopsis Filicum the nor- 
mal form of that species, is, with others, placed under A. 4thi- 
opicum, L. : : 
444—Asplenium Trichomanes, L., var. REPENS, n. var. Wet 
ledges, rocky hills, near Chihuahua ; October. 
A most interesting small fern with the habit of Camptosorus, 
the proliferous fronds reclining, rooting at the prolonged filiform 
apices, creeping, and forming closely appressed mats. Appar- 
ently identical with A. heterochroum, Kunze, but as there is 
nothing to show that the normal form of Kunze’s plant was pro- 
liferous, ours may be accepted as a good variety, whether under 
that species or Trichomanes. 
Dr. Hooker placed Kunze’s plant under A. 7richomanes in 
Species Filicum, and there is apparently no good reason for 
otherwise disposing of Mr. Pringle’s. 
442—Chetlanthes leucopoda, Link. Ledges, Santa Eulalia 
Mt.; March, 
This and 457 appear to me very doubtfully distinct. They 
seemingly differ only in one plant being more delicate than the 
other. 442 has heretofore been thought to be more delicate, but 
in Mr. Pringle’s collection it is more robust. Judging from the 
number of specimens it appears to have been abundant, thriving 
vigorously on exposed limestone ledges, while the more delicate 
457 grew sparingly on cool, shaded cliffs. 
The differences between the two are, on their face, exceedingly 
slight. Both are nearly equally glandular pubescent; the differ- 
ence in the color of their stipites is no greater than in many other 
ferns—in 442 they are usually straw-colored, but in some plants 
they are quite as brown as in 457—and other differences may 
be readily accounted for by the character of different habitats, 
and varying conditions of growth. But while I am strongly in- 
clined to consider these two ferns as merely good forms of one 
species, I have not made an examination thorough enough to 
justify so uniting them here. 
468—Cheilanthes Lindheimeri, Hook. 
449—Cheilanthes microphylla, Swz. 
459—Cheilanthes myriophylla, Desv. 
