— 6o— 



usually at or below the surface of the ground ; leaf stalk 2.5-4CIM. 

 long, flesh colored or pinkish; lamina 3-i2cm. wide, 2.5-Qcm. high, 

 composed of a central bipinnatifid portion, and two similar but 

 smaller lateral ones which take their origin alternately at dis- 

 tances varying from 5-1 5 mm -; lower lateral division the larger 

 with 4-6 lateral pinnules, each composed of 3-5 oval segments 

 with finely crenate margins ; venation indistinct except in younger 

 laminae; sporophylls i2-22cm. long, including the rather compact 

 mostly tripinnate panicle. 



Cinchona, Jamaica, alt. 5,000 feet, W. N. Clute, 6 Feb., 1900, 

 growing among bushes and along trails on a dry and rather ex- 

 posed hillside, in company with Lycopodium clavatum, Pttris 

 longifolia and others. Type in Herb. Underwood. 



The Kew specimen above mentioned is labeled "Jamaica, 

 Jenman, No. 12. Found by Mr. Xock at 5,000 feet alt. ; rare. The 

 only plant he has met with of it." Later Mr. Jenman must have 

 found more of it, for in referring to it as the Asiatic B. ternatum 

 he reported it as "common" in his "Ferns of Jamaica." 



This adds another to the series of the ternatum group which 

 mature their spores early in the year; Mr. Clute informs me that 

 unlike our species the leaves of B. Jenmani are annual and do 

 not persist throughout the year. It will be noted that the time of 

 maturity for Jamaica is the same as for the Jamaica represent- 

 ative of the Virginianum type which Mr. Clute also collected. 

 Columbia University, 2q May, 1900. 



A NEW VARIETY OF ISOETES 



By A. A. Eaton. 



SHORT time since I received through the kindness of W.W. 



Ashe, two sets of Isoetes from different localities in 



North Carolina, which could not be satisfactorily placed. 

 A study Of the material in the U. S. National Museum revealed 

 additional specimens from the Biltmore herbarium. The leaves 

 are usually very stout, and the appearance is characteristic, but 

 the spores show it to be nearly allied to Engelmanni, to which I 

 attach it as a variety, though further investigation may show it to 

 be distinct. It may be described as follows: 



Isoetes Engelmanni Carolimana var. now Size of type, 

 but leaves broader, (2-3^111), velum covering half to two-thirds of 

 the unspotted sporangium, which in the inner leaves is often icm. 



