[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 u 



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 391 2 (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 u, 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: 3SS. 1883. 



Calamaria nigritiana Kuntze, Rev. Gen. PI. 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. 



