[Vol. 9 

 114 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



18: 110. 1880, and Fern Allies, 133. 1887; Motel. & Vendr. 

 Actes Soc. Linn. Bord. 36 : 350. 1883. 



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



Corm 3-lobed; leaves 20-40, 15^40 cm. long, bright green, firm, 

 of medium fineness, gradually tapering to a point, with membra- 

 naceous margin extended 2-5 cm. above sporangium level; brown 

 papery scales sometimes produced from leaf bases ; stomata rare, 

 chiefly near tips; peripheral strands 6; ligule short, broad tri- 

 angular; sporangium oval, 4-7 mm. long, with very narrow 

 velum; megaspores white, 290-400 n long, closely marked with 

 large round depressed tubercles on each face ; microspores 26-30 p 

 long, tuberculate. 



Distribution : western Cuba, Pinao del Rio. 



Specimens examined : 



Cuba: "in rivulets (on the bottom) of the pinewood, Western 

 Cuba, Pinao del Rio, 1866," Wright 3912 (Mo. Bot. Gard. 

 Herb., Gray Herb., U. S. Nat. Herb., N. Y. Bot. Gard. Herb.). 



This form resembles the /. velata series in having large tuber- 

 cles on the megaspores, which differ, however, in not being re- 

 stricted to a central group on the apical faces but in covering 

 practically the whole face; furthermore, the tubercles instead of 

 being wart-like and much-raised are depressed. Of the 3-lobed 

 forms, it resembles /. adspersa A. Br. in the small megaspores, 

 less than 400 p, and in the absence of a velum. 



9. I. nigritiana A. Br. in Kuhn, Fil. Afr. 196. 1868; Motel. 

 & Vendr. Actes Soc. Linn. Bord. 36 : 388. 1883. 



Calamaria nigritiana Kuntze, Rev. Gen. PL 2: 828. 1891-93. 



Corm 3-lobed; leaves 12-15, 14-18 cm. long, flexuous, very 

 fine, rigid, pale green, opaque, with numerous stomata and poorly 

 developed peripheral strands or none; sporangia pale, globose; 

 velum very narrow ; megaspores small, gray, with a single tubercle 

 on each apical face, placed centrally within the triangle; on the 

 lower face, several smaller, placed variably. 



Distribution: Africa, Nigeria, along the Niger River, Nupe. 

 Description from Kuhn, Motelay and Vendryes, and Sadebeck 

 in Engl. & Prantl. 



