~ 
ROBINSON AND FERNALD, — MEXICAN PLANTS. 123 
in habit on account of its dense pendulous foliage, and figured in 
Scribner’s Magazine, xvi. 38. 
MARSILIA MOLLIS. Closely tufted, densely villous and cinereous 
throughout; hairs fine, silky, persistent or very tardily deciduous, finely 
warted under a compound microscope: internodes and stems in the 
numerous specimens at hand (terrestrial form) not at all developed: 
root a cluster of delicate fibres : petioles filiform, reddish brown, flexu- 
ous, 8-12 lines long, commonly nodding at the apex ; leaflets deltoid- 
obovate, entire, rounded at the apex, broadly cuneate at the base, 1} 
lines in length, equally broad: peduncles borne singly but in great 
numbers and closely crowded, 24-3 lines long; conceptacles horizon- 
tal, broadly oblong, compressed, 13 lines long, 1} lines broad, densely 
white-villous, dull brown on the removal of the pubescence, finely 8-9- 
wrinkled upon each surface, or smooth, often punctate; rhaphe } line 
in length ; basal teeth very obscure; sori 16-18. — Collected at San 
Diego, Chihuahua, at 6,000 feet, by Mr. Hartman, 20 April, 1891 
(no. 604). A very small and remarkably pubescent almost lanate 
species. 
EY STOUT AT TSR gs Wit aia Ae teal ag Se Gace ope ms ee 
