WOODSIA. 
27 
Fronds tapering at base, bi-pinnate ; otherwise as No. 89. 
Rocky Mountains and eastward. Europe. 
92. Variety prollferillll, Wollaston. (The prolifei^ous variety.) 
Fronds lanceolate, lax bi- or tri-pinnate, final divisions extremely 
delicate, tapering, distinctly stalked, usually with deep and widely spread- 
ing lobes, proliferous on the rachis. 
San Rafael, California. Very rare. 
-K- ^Fronds not bristly toothed. 
93. A. molirioicles, Bory. 
Fronds oblong-lanceolate, almost leathery, narrowed below, pinnate ; 
pinnae many, to inches long, ovate or ovate-lanceolate, usually 
overlapping, obtuse, lobed, lobes scalloped ; fruit-dots very large. Stalks 
chaffy. Rootstock short. About a foot high. 
Mt. Eddy, California (Lemmon); Falkland Islands, Patagonia, Chili, Prince Ed- 
ward’s Islands. Very rare. 
XV. CYSTOPTEEISj Bernhardi. Bladder-Fern, 
Fruit-dots borne on the back of a straight branch of the free veins ; 
indusium somewhat jagged on the edge, soon vanishing. Tufted ferns. 
(Greek for bladder-fe 7 ^n, from the bladdery indusium.) 
A genus of 5 species, 3 in the United States. Growing in moist and shady places. 
94. C. fragiliSj Bernhardi. (The frail C.) 
Fronds once- to thrice-pinnate, oblong-lanceolate j pinnse ovate or 
lanceolate, acute in the typical form ; secondary rachis winged ; final 
divisions irregularly cut. 
Throughout the world. 
95. Variety deiltata. Hooker. (The variety.) 
* Scarcely bi-pinnate ; pinnules ovate, obtuse, bluntly toothed. 
Abundant in California; less common eastward. Various parts of the world, 
96. Variety laciniata, Davenport. (The variety.) 
Fronds pinnate, narrowly lanceolate; pinnse short, broadly lanceo- 
late, parted, divisions deeply and irregularly cut into linear or acutely 
toothed lobes. 
California and Colorado, 
In the still unsettled knowledge of these forms, it is best to indicate what may prove to be good 
varieties. 
97. C. lUOMtana, Bernhardi. (Th& motmtain C.) 
Fronds deltoid-ovate, tri-pinnate, final divisions almost again divided. 
Mountains of Colorado and northward. Rare in our region. 
XVf. WOOSIA, R. Brown. Woodsia. 
Veins only forked. Our plants with pinnate, lanceolate fronds; 
pinnae parted into scalloped or toothed divisions; fruit-dots near the 
margin. Rootstock short and creeping. Tufted ferns growing among rocks. 
About a foot high. (Dedicated to Joseph Woods, an English botanist.) 
A genus of nearly 15 species, 7 in the United States. 
