[Vol. 9 

 128 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



25. I. histrix Bory & Dur. Compt. Rend. Acad. Paris 18: 1167. 

 1844; A. Br. in Bory & Dur. Expl. Sci. Alg. 36. fig. 1. 1846-49; 

 Milde, Fil. Eur. 288. 1867; Kuhn, Fil. Afr. 195. 1868; Baker, 

 Jour. Bot. 18: 110. 1880, and Fern Allies, 134. 1887; Motel. 

 & Vendr. Actes Soc. Linn. Bord. 36: 394. 1883. 



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

 /. Delalandei Lloyd, Fl. Quest. Fr., ed. 1, 728. 1854. 

 Cephaloceratodon hystrix Genn. Comment. Critt. Ital. (3) : 

 111. 1862. 



Corm 3-lobed; leaves 9-22, 5-10 cm. long, linear, iirm, with 

 membranaceous margin disappearing at sporangium level; bases 

 of leaves persistent as hard brown horny structures, with central 

 short broad tooth and two longer lateral spine-like teeth, produc- 

 ing an exaggerated effect of size at the corm level through 

 persistence from one season through succeeding ones; stomata 

 numerous ; peripheral strands 4, strongly developed ; ligule ovate- 

 triangular; sporangia 4-6 mm. long, completely covered by 

 velum; megaspores white, 400-560 (600) M in diameter, closely 

 marked with small tubercles or warts, becoming somewhat con- 

 fluent, especially on the basal surface; microspores brown, 25- 

 33 p long, spinulose. 



Distribution : Algeria, islands of Mediterranean, Italy, France. 

 Specimens examined: 



Algeria: dry sands, hills of LaCalle, March, 1841, Durieu (Mo. 

 Bot. Gard. Herb.), TYPE; dry hills, LaCalle, 30 March, 

 1841, Durieu (Gray Herb.) ; near Mascara, May, 1844, Bory 

 (Gray Herb.) ; Mascara, May, 1841, Durieu (Mo. Bot. Gard. 

 Herb.) ; near Mascara, 14 September, 1864, Warion (U. S. 

 Nat. Herb.) ; "Telegraph, infer Alger," April, 185b, Guthnik? 

 (N. Y. Bot. Gard. Herb.) ; in wet sandy places at Sidi-Dako, 

 near Mascara, 28 April, 1875, Warion PI. Ail. Sel. 187 

 (Kralik) (U. S. Nat. Herb, and Gray Herb.) ; wet sands of 

 the plain of Chearfa, Mostaganem, Prov. Oran, 19 May, 

 1875, Cosson (Gray Herb.); Dj. Ouach. Prov. Constantine, 

 26 May, 1880, Cosson (Gray Herb.); LaCalle, April, 1884, 

 Debeaux (U. S. Nat. Herb.) ; Bone, 1906, Gandoger (Mo. 

 Bot. Gard. Herb.). 

 Tunis: north of Ain-Draham, 4 July, 1883, Cosson et al. (Gray 



Herb.). 

 Corsica: Bonifacio, 21 April, 1866, Mabille (Mo. Bot. Gard, 



