316 70 



Jamaica 4: 203. 1897; Leptogramma gracilis J. Sm. Joiirn. Bol. 4: 52. 1841; Phego- 

 pteris gracilis Meli. Pheg. und Aspid. 17 n. 27. 1858; Graminilis Heivardii Moore, Gard. 

 Chr. 1856: 261 cum fig.; Polypodium Hewardii Grisüb. Fl. br. W. Ind. 696. 1864. 



The identificalion of P. heteroclitum Desv. wilh G. gracilis Hew. is allribuled 

 lo Kuhn, and allhough I have seen no proofs of Ihe justificalion of this, still I 

 prefer to follow the nomenclature of my Index in order not to create a new perhaps 

 useless combination of names. I have seen no authentic specimen of this species, 

 but according to the diagnoses given by Mettenius and Jenman I refer here a 

 specimen from Jamaica, leg. W.R.Maxon n. 989 (HC) and another from Puerto 

 Rico, Sintenis n. 6449 (HC); in any case these specimens belong to a species 

 different from the other Leptogrammae. 



In general habit D. heteroclita resembles closely D. consimilis ; as in this species 

 the lamina narrows downwards very gradually through many pairs of reduced 

 pinnæ, the lowermost auriculiform, but it differs by its closely-placed pinnæ, which 

 are incised to a wing to the costa scarcely 1 mm. broad, with closely-placed, narrow- 

 linear, obtuse or subacute segmenis; about 12 pair of veins, of which the basal 

 pair reach the edge above the narrow, acute or a little rounded sinus. Sori only 

 a little elongated, placed distinctly above the middle of the vein and nearly reaching 

 the somewhat revolute edge. Lamina rather firm, throughout pubescent, especially 

 on the vascular parts. 



61. Dryopteris atrovirens n. sp. C. Chr. apud Christ. Bull. L'Herb. Boiss. II. 



7: 26;i 1907 — [Fig. 39]. 



Guatemala: Alia Verapaz, Trail between Sepacuité and Secanquim, 1000m. 

 Rocky bank in humid forest, leg. W.R.Maxon & Robert Hay '^'i 1905, n. 3281 (HC) 

 (Type specimen). 



Costa Rica: Forêts de FAchiote, 2200 m., Ad. Tonduz XI. 1896, n. 10727 (HC). — 

 Navarro, C. Wercklé 1905 (HC). — La Luna, C. Wercklé 1905 (HC). 



Leptogramma rhizomate parvo (erecto?). Stipilibus dense fasciculatis, ad pinnas 

 infimas reductas vix 10 cm. longis, castaneo-brunneis, nitidis, minute pubescenlibus, 

 mox glabriusculis, basi decidue squamosis. Lamina lanceolala, 7 — 8 dem. longa, 

 c. l'/a dem. lata, sursum sensim decrescente, versus basin abrupte reducta, viridi, 

 lierbacea, ubique brevissime pubescente vel sublus glabriuscula, bipinnalifida. Pin- 

 nis 20—30 jugis, subhorizontalibus, alternis, mediis 2 — 3 cm. distantibus, inferiori- 

 bus 5—6 jugis abrupte valde reductis, auriculiformibus, infimis minimis (Typus V), 

 mediis c. 10 cm. longis, 2 cm. latis, sessilibus, breviler acuminatis, ad alam 1 — 

 Vhi mm. latam pinnatifidis. Laciniis 15 — 20 jugis, sinubus lalis rotundis vel sub- 

 aculis separatis, apice obtusis vel rotundatis, integris, basalibus (praesertim anteriore) 

 plerumque abbreviatis, raro subaequalibus. Venis indivisis, 7 — 9 jugis, basalibus 

 supra sinum marginem attingentibus. Soris omnibus oblongis, supramedialibus. 



This new Leptogramma resembles not a little D. consimilis especially in its 

 remote pinnæ and its broad, open sinus, but it differs from all species with oblong 



