46 
Wisconsin Academy of Sciences , Arts and Letters. 
COSCXNGDON, p. 154. 
Costa not entering the hyaline point which is less than the 
leaf in length. 
Dioicous, leaves oblong lanceolate . . . . C. puTvinatus, 1. 
Autoicous, leaves obovate.C„ Rani, 3. 
Costa forming a rough hyaline point twice as long as the 
leaf. C. Wriglitii, 2. 
PTYCHOMITRXTJM, p. 156. 
Plants large (3 cm. + ), leaves acuminate, sharply dentate P. Gardner!, 1. 
Plants small (1 cm. —), leaves not acuminate, nearly or 
quite entire. 
Collum 0. 
Teeth subulate (1:10), entire.P. incurvum, 2. 
Teeth lanceolate (1:4), bi- or trifid . . . P„ Drummondii, 3. 
Collum equalling one-third sporangium P. pygmseum, 4. 
AMPHORIDIUM, p. 158. 
Leaf margins plane, entire ..... A. Lapponicilin, 1. 
Leaf margins recurved or re volute. 
Leaves remote, recurved-spreading, serrate . A. Sulliyantii, 4. 
Leaves close. 
Costa excurrent, seta arcuate . . . .A. Califormcim, 3. 
Costa vanishing below apex. 
Entire.A. Mongeotii, 2. 
Serrulate.A. csespitosmn, 5. 
TJLOTA, p. 160. 
I. Leaves rigid , not crispate when dry. 
[U. Drummondii may be sought here.] 
Costa percurrent.U. Hutcliinsise, 9. 
Costa ceasing below apex.U. Barclayi, 10. 
II. Leaves crispate ivhen dry. 
Upper leaves tipped with gemmae 
U. pliyllantha, 8. 
