Pteridophyten. 547 



grandis Maxon, from Costa Rica; H. choricarpa Maxon, from 

 Costa Rica; and H. gnatemalensis Maxon, from Guatemala. 

 One new combination is published: H. lucida (Fee) Maxon {Hemi- 

 stegia lucida Fee). There are included also critical notes upon 5 

 doubtful species: H. cruciata Desv., Hemistegia elegantissima Fee, 

 H. munita Willd., H. spectabilis Kunze, and H. subincisa Kunze. 

 The illustrations published are designed to show details of venation 

 (as well as leaf shape), which is found to be a very constant feature 

 and of value in distinguishing the species and groups of species. 



2. Further notes on the Westlndian species of Poly- 

 stichum. This includes description of one new species from Jamaica, 

 P. ambiguum Maxon, somewhat allied to P. dissimulans Maxon; and 

 the publication of a new combination: P. Whrigtii (Baker) C. Chr., 

 of which the Synonyms are: Polypodium Wrigthii Baker (1867), Dryo- 

 pteris Sauvallei C. Chr. (1905), and Polystichum longipes Maxon 

 (1909). This Cuban species is known only upon Wright's n°. 3924. 



3. The American species of Pteropsis. The name Pteropsis 

 (Desv. 1827) is here taken up in place of Drymoglossum Presl., 1836. 

 There are 3 American species: P. Wiesbaurii (Sodiro) Maxon, comb, 

 nov., {Drymoglossum Wiesbaurii Sodiro), from Ecuador; P. martini- 

 censis (Christ) Maxon, comb. nov. (D. martinicense Christ) , from Mar- 

 tinique; and P. Underwoodiana Maxon, sp. nov., from Costa Rica, 

 the type being J. D. Smith n°. 6941 (distributed as Acroslichum 

 amygdalifolhan Mett). The new species is figured. 



4. Two unusual forms of Dicranopteris. This consists of an 

 account of the very peculiar morphology of the Mexican plant 

 Mertensia gleichenioides Liebm. and of a similar form from Jamaica 

 which is merely an unusual State of D. bifida (Willd.) Maxon. The 

 Mexican plant appears to be a like development of a species which 

 is as yet unknown otherwise. The Jamaican plant is figured. 



5. The American species of Cibotium. Four American spe- 

 cies of Cibotium are recoguized, and the type and other collections 

 of them are figured. A key is also given, together with critical notes 

 under each species. C. horridum Liebm. is not a Cibotium, but 

 apparently a young and sterile State of Cyathea princeps (Linden) 

 E. Meyer. 



6. Two new species of Notholaena. These are: N. leonina 

 Maxon, related to N. Pringlei Davenp., the type being Palmer 

 1381 from Nuevo Leon, Mexico; and N. Rosei Maxon, the type 

 being Rose and Painter 7665 from Chapala, Jalico, Mexico. 

 The latter species has hitherto been very strangely confused with 

 N. Lemmoni. 



7. Miscellaneous notes and changes of name. These 

 include extensions of ränge and notes on distribution of several 

 tropical American species of pteridophyta. The following new names 

 and new combinations are published: Goniophlebium Eatoni (Baker) 

 Maxon (syn. Polypodium Ghiesbreghtii Eaton, non Linden; P. Eatoni 

 Baker; Gon. Prhiglei Maxon); Gon. rhachipterygium (Liebm.) Maxon 

 (syn. P. rhachipterygium Liebm ; P. stenoloma Eaton; P. Donnell- 

 Smithii Christ); P. duale Maxon syn. Acrostichum serrulatum Sw. 

 1788; P. serrulatum Mett. 1856, non Sw. 1801; etc., etc.); P.Jenmani 

 Underw., nom. nov., (syn. U P. lasiolepis" Jenm. 1897, non Mett. 1869). 

 The first two species are figured. P. Jenmani is known only from 

 Jamaica. Maxon. 



