a i a 
+4 
3.—M. macropoda, Engelmann, Amer. iran Science, 2d Series, III., 36, 
(1847); Underwood, Our Native Ferns and their Allies, 115. 
MM. macropus, A. Braun, Monatsb., 1863, 418; 1870, 726; 1872, 660. 
Plant robust, 10-25 cm. high; leaflets large, 2-5 cm. long, 2 
cm. wide or less, usually undulate, clothed with white hairs on 
both sides when young, becoming smoother with age; sporo- 
‘carps 2-6, on erect branching peduncles, ascending, densely 
villose, 6-8 mm. long, 5-6 mm. wide; raphe short, the lower 
tooth obtuse, the upper ponies aay or wanting ; sori, Io in 
each valve. 
HaB.—Texas, Rio Grande (Wright, 1848)*, Guadaloupe Co, 
(Lincecum)*, Ponds on the Seco (Reverchon)+, Austin (Buck- 
ley)t, Western Texas (Wright, No. 812)*; New Mexico (Wright, 
NG. 20TL): 
4.—M. uncinata, A. Braun, Flora, 1839, 300; Amer. Jour. Science, 2d Series, 
III., 55: Monatsb., 1863, 423; 1870, 742; 1872, 665; Chapman, Flora of Southern 
States, 672; Gray, Manual, 678; Underwood, Our Native Ferns and their Allies, 115. 
Plant 6-20 cm. high; leaflets nearly smooth, entire, 10-16 
mm. long; sporocarps 6 mm. wide, 8 mm. long; peduncles 
15-30 mm. long; raphe long, terminating in two approximate 
teeth, the upper longer and mostly uncinately curved; sori, 13-14 
_in each valve. 
-HAb.—Western Louisiana (Hale); Dallas, Texas (Reverchon, 
in Curtiss’ N. A. Plants, No. 3819). 
5-—4. vestita, Hooker et Greville, Icones Filicum, II., tab. 159, (1831); Engel- 
mann, Amer. Jour. Science, 2d Series, III., 55; A. Braun, Monatsb., 1863, 424; 1870; 
741; 1872, 662; Watson, Botany of California, [., 351; Underwood, Our Native 
Ferns and their Allies, 115; Coulter, Manual, 437. 
M. villosa, Brackenridge, Ferns of U. S. Explor, Exped., 340 (Amer. plant 
only ?). 
M. mucronata, A. Braun, Amer. Jour. Science, 2d Series, III., 55, (1847); 
Monatsb., 1863, 423; 1870, 740; Underwood, 1. c., 115, 
MW. picta, Feé, Cat. des Foug. du Mexique, 47 (1857). 
M. Holtingiana, Schaffner, in Herb. Gray. 
M. minima, Fournier ex. Schaffner, in Herb. Underwood. 
Plant 3-6 cm. high ; leaflets entire or slightly toothed ; spord- 
carps 4-7 mm. long, 3-5 mm. wide; raphe short, lower tooth 
short and blunt, the upper acute, a little longer, sometimes 
curved ; palez varying from soft, dense and spreading to short 
and appressed, in mucronata forms, where it is sometimes want- 
ing; sori, 6-11 in each valve; a very variable species. 
