172 CONTRIBUTIONS FROM THE NATIONAL TIERBARIUM. 
The following specimens have been examined : 
Nortu Carontna: Summit of Satulah Mountain, near Highlands, Macon 
County, alt. 1,500 meters, on exposed rocks, Smith (N, M, G). High- 
lands, Sherwood in 1901 (Y), and in 1902 (Y), Hendersonville, 
* Huger (Y). 
PusrRBUTION + Mountains of North Carolina. 
The many-ranked leaves and densely cespitose habit of S. shericoodié serve 
as very obvious distinguishing characters. The tortuous sete and the tuber- 
culate megaspores also form important distinctions, 
The closely appressed, shallowly suleate, thick leaves are so wholly unlike 
» the longer, flatter, more lax, deeply sulcate leaves of S. rupestris that there 
is little likelihood of confusion. NSeclaginella acanthonota does not, so far as 
known, reach the altitude of this or the next species, but its more erect habit, 
its rigid sete, and the dorso-ventral arrangement of its spores would, in any 
‘ase, serve immediately to distinguish it, 
EXPLANATION OF PLATE 22.-—Selaginella sherwoodii, Specimen collected on Satulah 
Mountain, near Highlands, North Carolina, August 30, 1882, by John Donnell Smith ; 
U. S. Nat. Herb., no, 824949. Natural size. 
8. Selaginella rupestris (..) Spring in Mart. Fl. Bras, 1°: 118. 1840. 
Figure 70. 
Lycopodium rupestre L. Sp, Pl V01, 1755. 
This species, while not endemic to the southeast, as are the other plants dis- 
cussed, grows along the mountains well down into Georgia, Its alveolate- 
reticulate megaspores form a ready distinetion. It shows several marked 
s 
fs 
if. 
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oi 
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Vig. 70.—-Details of Selaginella rupestris. a, Dorsal view of leaf; 5, ventral 
view : ¢, dorsal view of sporophyll; ¢, ventral view; e, commissural face of 
megaspore; f, outer face. V'rom specimen collected in Lancaster County, 
Pennsylvania, Heller & Halbach 706; U. 8S. Nat. Herb., no. 204750. Scale 30. 
variations in form in the northern and western portions of its range, but 
the form in the south seems fairly constant. <A discussion of this species and 
its allies in the northern United States will be published in a subsequent paper. 
The type is from “ Virginia.” 
