[Vol. 9 

 200 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



1918, Fernald] & Long 15949 (Gray Herb, and Mo. Bot. 

 Gard. Herb.). 



Connecticut: muddy border of pond, Niantic, East Lyme, 19 

 August, 1913, Bissell (Gray Herb.) ; submerged, stony shore, 

 lower end of Long Pond, Ledyard, 4 August, 1896, Graves 

 139 & 140 (Mo. Bot. Gard. Herb.); same place and date, 

 Graves (Gray Herb.) ; in mud, bare at low water, head of 

 Hamburg Cove, Lyme, 10 September, 1902, Graves (Mo. 

 Bot. Gard. Herb.). 



56. I. foveolata Eaton in Dodge, Ferns and Fern Allies of N. 

 Eng. 38. 1896. 



Corm 2-lobed, rarely 3; leaves 20-45, 8-18 cm. long, rather 

 slender, round, becoming dark green; stomata few, near tips 

 of leaves; peripheral strands none; ligule short triangular; spo- 

 rangia 4-7 mm. long, brown-spotted, with very narrow velum; 

 megaspores white, 360-560 \i, rarely 600 n, in diameter, dense- 

 ly sculptured with somewhat irregular reticulations formed 

 by wide, high ridges surrounding deep pits ; microspores 23-33 M 

 long, minutely papillose. 



Distribution: New Hampshire. 

 Specimens examined: 



New Hampshire: pond on Lamprey River, Epping, 20 August, 

 1896, Eaton (Mo. Bot. Gard. Herb, and Gray Herb.), TYPE; 

 West Epping, 20 August, 1896, Eaton 482A (Mo. Bot. Gard. 

 Herb, and Gray Herb.); Epping Corner, 14 September, 

 1899, Eaton 299 (Mo. Bot. Gard. Herb.); New Market, 

 Eaton (Mo. Bot. Gard. Herb.) ; Epping, Pautuckaway River, 

 Eaton 432 (Mo. Bot. Gard. Herb.); Lamprey River, Ep- 

 ping, August, 1897, Eaton (Mo. Bot, Gard. Herb.). 



57. I. Martii A. Br. Kuhn in Martius, Fl. Brasil. I 2 : 646. pi 78. 



1884; Baker, Fern Allies, 129. 1887. 



Corm 2-lobed, small; leaves 24-52, up to 75 cm. in length, 

 soft green, flexuous, reddish brown at base, with membranaceous 

 margins extending 6-8 cm. above sporangium level; stomata 

 near tips of leaves, lacking below; peripheral strands usually 

 lacking or weak ; ligule cordate-triangular ; sporangium 6-8 mm. 

 long, partly covered by velum (1/2-2/3) ; megaspores chalky 

 white, 580-660 \i in diameter, marked with irregular, confluent, 



