THE FERNS OF NICARAGUA. 



J 45 



with three pairs of lateral compound pinnae, quite like Fend- 

 ler's No. 414 from Panama, 1 which is marked A. triangulatum. 

 This form answers in every respect to Hooker's description 

 of A. triangulatum (ibid.). 



The series being complete all these forms are united under 

 the oldest name, A. obliquum Willd. For convenience in ref- 

 erence, however, it may be desirable to recognize intermedi- 

 um as a variety, in which case the name should be written A. 

 obliquum Willd. var. intermedium Swartz. 



The typical form was found rather sparingly in low woods in 

 the vicinity of Castillo. The form A. kaulfussii was very 

 common with the type near Castillo, and also along the La 

 Juana River, in both of which localities the forms passing into 

 intermedium were also abundant. A. "triangulatum" was 

 found with typical obliquum near Castillo. All of the forms 

 are terrestrial in habit. 



A. obliquum has been reported from the vicinity of Granada 

 by Fournier and Hemsley, and A. kaulfussii 2 from Chontales 

 by Hemsley (ibid.). The form intermedium has not hereto- 

 fore been reported from Nicaragua. 3 



2. A. TRAPEZIFORME L. PI. VI, FigS. 6-8. 



Linne, Syst. Nat., vol. n, p. 695 ; Swz., Fl. Ind. Occ, p. 125; Presl, Rel. Haenk., 

 p. 63; Presl, Tent. Pter., p. 155, pi. vi, figs. 8, 9, 10; Lieb., Mex. Breg., p. 

 113; Mett., Fil. Hort. Bot. Lip., p. 4S: Hook., Sp. Fil., vol. 11, p. 33; Eaton, 

 Fil. Wr. et Fend., p. 202; Roth., Les Foug., vol. 1, p. 147, pi. xvi; Hook. 

 and Bak., Syn. Fil., p. 118; Fourn., Sert. Nic, p. 259; Smith, Ferns, 

 Brit, and For., p. 184; Hemsl., Biol. Cent. Am., vol. 111, p. 612. 

 A. fentadactylon L. & S. — Hook, et Grev., Icon. Fil.. pi. xcvin ; Smith, 

 Ferns, Brit, and For., p. 184. 



This splendid species was found rather sparingly on Ome- 

 tepe in deep woods and also along a cactus hedge in a banana 



1 Shaw Herbarium, St. Louis. 



8 Fournier, in Sertum Nic, p. 259, refers Levy's no. 496 from Chontales 

 to A. luadum var. a pinnatum. Hemsley (ibid.) refers it to A. kaulfussii. 



3 Hemsley, Biol. Cent. Am., vol. 111, p. 609, places A. lucidum var. pinna- 

 turn Mitt, ex Fourn. Mex. PI. Enum.i p. 129, in the synonymy of this form. 

 If this is intended for A. luadum var. 3 bipinnatum Mett., it is reported from 

 Chontales by Fournier in Sertum Nic, p. 259. 



IV— 11 L2 



