FRONDS VARIOUSLY CUT AND DIVIDED. 
Fruit - dots at the 
margin, covered 
with the edge of -< 
the leaf, or by con- 
tinuous indusium. 
Fruit-dots near the 
tips of the veins, 
under surfac 
white and woolly 
Stem black. Adiantum. 
Leaf ternate, stem light, 
1-3 ft. Pteris 
Leaf woolly or chaffy. 
Cheilanthes 
-1 
Nothol^na. 
A. pedatum, L. 
Stem forked at the 
summit of stalk, 
bearing one-sided 
branches. . 
Stem continuous, leaf ( A ~ T 
ovate, 2-3 pinnate. \ A ‘ Capillus-Venens, L. 
W lobe? 1 ° ng ’ ? bt . US !| aquilina, L. 
Lobes very narrow. 
stipe 
Fruit-bearing and non- 
fruiting leaf different. 
Cryptogramme 
Leaves not very unlike, 
stem dark. Pell^ea. . 
Frond smooth. 
Frond hairy, 
brown. 
Fronds woolly. . . j 
Fertile fronds taller f 
than sterile, and J 
with narrower di- 1 
visions (_ 
3-6 in., smooth. . 
6-15 in., thick; pale j 
green ( 
var. caudata. 
C. Alabamensis, K. 
C. lanosa, (Mx.) Watt. 
C. tomentosa, Link. 
C. gracilis, (Fee) Mett. 
C. acrostichoides, R. Br. 
P. Stelleri, (Gm.) Beddome 
P. atropurpurea, Link. 
PAGE 
Fronds deltoid-ovate. N. nivea dealbata, (P.) Dav. 
5 
6 
7 
8 
9 
10 
13 
12 
Fruit-dots ovate, ses- 
sile, with a ring at 
apex, and opening 
by a longitudinal 
slit 
SCHIZAJA. 
Lygodium. 
SCOLOPENDRTUM 
Fruit-dots linear.... 
^ Camptosorus. 
FRONDS LEAF-LIKE. 
Fronds unlike, sterile ( 
linear, fertile taller, -1 S. pusilla, Pursh. 
3-4 inches high ( 
* \ F ?ng dS leaf_Hke 5 Climb " \ L, palmatum, Bernh. . 
• | Fr pairs° tS ° bHqUe ^ in -j S. scolopendrium, (L.) K. 
{ Partly oblique, partly par- ( 
allel to midrib; frond -{ C. rhizophyllus, Link 
rooting at apex 
. 66 
• 65 
. 29 
• 30 
