[Vol. 3 



130 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



France: near Cazau (Landes), 5 July, 1861, ex herb. norm. F. 



Schultz (Durieu) 781 (IT. S. Nat. Herb.) ; "southern France," 

 July, 1861, Durieu (Gray Herb, and N. Y. Bot. Gard. Herb.) ; 

 near Grasse, Alpes Maritimes, 1 April, 1891, Mouillefarines 

 (U. S. Nat. Herb.) ; pools near Cazau, Landes, 29 June, 1862, 

 Durieu (Mo. Bot. Gard. Herb.); sandy pastures near £tang 

 and village of Cazau, Landes, 1861, Durieu (Mo. Bot. Gard. 

 Herb.); dry sand near Cazau, September, 1861, Durieu 

 (Gray Herb.) ; near the sea-coast, on the He d'Yeu Vendee, 

 May, 1883, Grand-Marais (Mo. Bot. Gard. Herb.) ; Gironde, 

 August, 1891, Motelay (Mo. Bot. Gard. Herb.); Cazau 

 (Gironde), along railroad near station of Cazau, Hameau, 

 20 May, 1900, Neyraut (Mo. Bot. Gard. Herb, and Univ. 

 Minn. Herb.); Mios, Gironde, 11 July, 1897, Neyraut 

 (Mo. Bot. Gard. Herb, and N. Y. Bot. Gard. Herb.). 



Guernsey: L'Aucresse, 15 June, 1884, Hanbury 1656 ( N. Y. Bot. 



Gard. Herb.). 



The plants of Neyraut collected at Mios are unusual in large 

 number of leaves (up to 50), but appear to be the form with a 

 poor development of the scaly bases. 



26. I. Nuttallii A. Br. in Engelm. Am. Nat. 8: 215. 1874; 

 Baker, Jour. Bot. 18: 105. 1880; Engelmann, Trans. St. Louis 

 Acad. Sci. 4: 388. 1882; Motel. & Vendr. Actes Soc. Linn. Bord. 

 36: 375. 1883; Macoun, Cat. Canad. PI. pt. 4:293. 1888; 

 Piper, Contr. U. S. Nat. Herb. 11: 88. 1906. 



/. opaca Nuttall in Engelm. Trans. St. Louis Acad. Sci. 4: 

 388. 1882. 



/. Suksdorfii Baker, Fern Allies, 132. 1887. 



Calamaria Nuttallii Kuntze, Rev. Gen. PI. 2: 828. 1891-93. 

 Corm slightly 3-lobed; leaves 13-60, 8-17 cm. long, 3-angled, 



very slender, firm, erect, light green, with membranaceous mar- 



gins not extended beyond sporangium level; stomata numerous; 

 peripheral strands 3 (sometimes 2 dorsal lacking) ; ligule small, 

 triangular; sporangia oblong, 4-7 mm. long, completely covered 

 by velum; megaspores white, (320) 400-528 (600) u in diameter, 

 densely covered by small, usually glistening, distinct papillae on 

 faces between prominent commissural ridges, or rarely smooth; 

 microspores brown, 25-30 u in length, papillose. 



