326 
IOWA ACADEMY OF SCIENCE Voi* XXIX, 1922 
Spore dots circular, 1mm. across; indusium on one side of dot, 
attached beneath and arching- over (like a cup lying on its side), 
difficult to find. Plants spreading freely by rhizomes, forming 
large solid beds. 
1. Evs. (without stalk) 4-6 times longer than wide, bearing bulblets 
along midrib ' i. C. bulbifera 
1. Evs. 2-3 times longer than wide, without bulblets 2 . C. fragilis 
1. C. bulbibera Bulb-bearing C. 
Lvs. long and narrow, 2-3-pinnate, 3-6dm. long, 4-8cm. wide, 
thin and soft, bearing bulblets along midrib underneath. 
Moist shaded banks, rare. 
2m. n. w. of Montour, la. 
Queb. to Wis., Tenn. and Ark. 
June- July. 
Note: I have seen this delicate and beautiful fern flourishing in great 
profusion on the north side of a small house in Knoxville, Iowa. It might 
well be often cultivated. 
2. C. Rragilis Fragile C. Prairie Fern 
Lvs. narrowly oval in outline, l-3dm. long, 3-8cm. wide, firm in 
texture. 
Woods, common. 
Jones Grove; Sugar Creek; Botanic Garden. 
General in n. temp. zone. 
July- Aug. 
10. W oodsia 
(In honor of Joseph Woods, a British botanist.) 
Small ferns with narrow 1-2-pinnate lvs., usually downy. Fruit 
dots round. Indusium attached under the dot all the way round, 
completely covering the sporangia at first, but early disappearing. 
1. W. obtusa Obtuse W. 
Evs. broadly lanceolate, pinnate, the lflts. pinnately divided, 
downy with glandular hairs ; lflts. rather far apart, broad at base. 
Indusium of a few broad spreading pointed lobes. 
Rocky woods, very rare here. 
Eldora. 
Maine to Ga., Ariz. and-B. C. 
July. 
11. Onoclea 
(This name was first recorded by Dioscorides for some flowering plant) 
Large coarse ferns with spore bearing lvs. much contracted 
into podlike bodies. Sori within the podlike bodies, on upraised 
