—66- 



11. H. polyanlhos Sw. Common on many kinds of trees at 



nearly all altitudes. There is considerable variation in 

 the fronds. (274). 



12. //. sanguinolentum Sw. On trees, New Haven Gap. Not 



uncommon. This is Jenman's H. polyanthos, var. 

 sanguinolentum, but seems distinct enough to be con- 

 sidered a species, as Swartz placed it. (206a). 



13. H. clavatum Sw. Morce's Gap, on trees, not common. 



(50). 



14. H. lanatum Fee. Most abundant. Nearly always pres- 



ent where the situations are favorable. Can be peeled 

 from the trunks in large sheets. The fronds are brown- 

 ish green in color. (84). 



15. H. sericeum Sw. Another common filmy fern growing 



usually on horizontal trunks and limb? where the fronds 

 may hang straight down. Fronds brown and woolly, 

 the inner portion usually dead. (98). 



16. H. hirtellum Sw. Morce's Gap. Only two specimens 



collected. (123). 



17. H. Catherines Hook. Morce's Gap, on trees. A finely cut 



species, but nevertheless quite rigid. In appearance 

 much like Trichomanes trichoideuin. (274a) 



( To be Continued.} 



The note from E. J. Hill, taken from Torrey Bulletin, speaks 

 of Pellaea as preferring a sunshiny place. The first plant I found 

 was on a rock where it would receive some sunshine, but the spec- 

 imens were small and starved. The best find was on the face of 

 a cliff, or in the crevices, in deep shade where the sun never pen- 

 etrated. The plants were large and luxurious, most of the fronds 

 being eight to ten inches long. — Mrs. E. C. Anthony, Gouv- 

 erneur, N. Y. 



The number of spores formed within a microsporangium [of 

 IsoetesJ is enormous —much greater than in any other living plant. 

 In some species it is said to exceed a million, but the largest num- 

 ber I have found in /. echinospora is 300,000. My estimate places 

 the average number from 150,000 to 250,000. As is well known, 

 no provision is made for the dehiscence of the sporangium wall. 

 The spores are set free only by the decay of the tissues enclosing 

 them. — R. IV. Smith in Botanical Gazette. 



