[Vor. 8 
206 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
citro-luteis circiter 330 шіп diametro cum costis plus minusve 
anastomosis obtectis. 
A cespitose perennial herb, 3 to 6 em. or more long; stem 
and branches prostrate or somewhat ascending at the tips, 
leafy, remotely rooting; leaves erowded, several-seriate, on 
the under side of the stem more or less appressed but for the 
most part ascending or erect, ovate-lanceolate to triangular- 
ovate, 1 to 2.5 mm. long, 0.5 to 1 mm. broad, acuminate or 
acute, ciliate, glabrous on both surfaces, flat above, slightly 
convex beneath and in the dried state narrowly channelled 
from the base almost to the apex; spikes (strobiles) terminal, 
0.5 to 1 em. long, erect or nearly so, tetragonal, about 1.5 mm. 
in diameter; sporophylls broadly ovate, cordate, a little 
shorter than the leaves; microspores sparingly short- 
spinulose or papillose, orange-yellow, about 46 шіп the greater 
diameter; megaspores lemon-yellow, about 330 y in diameter, 
covered with more or less anastomosing ridges.—Mexico: in 
dense mats on large rounded granite boulders, San Esteban 
Mountains, about 32 kilometers from Guadalajara, State of 
Jalisco, coll. of 1908, Barnes & Land 2024 (Mo. Bot. Gard. 
Herb.), TYPE. 
This species is related to Selaginella rupestris (L.) Spring 
from which it differs markedly in several characters, notably 
in having upturned or subsecund and spreading instead of 
appressed-imbricated leaves and in the absence of bristle-tips 
at the leaf-apex. In a synoptical treatment of the several 
species now recognized as belonging to the S. rupestris group, 
S. Landi would stand next to 8. Watsont Underwood, from 
which it is readily separated by the ascending or erect leaves 
on the upper side of the stem, by the absence of an awn at 
the leaf-apex, and by the smaller megaspores. 
