MICKSUNM. 76 



l)innatiri(l, segments ovalo-oblong obtuse sui)eiit)r base trun- 

 cate inferior base abscisso-cuneale, the superior margin and 

 aj)ex incised, incisions obtuse eniarginate fructiferous, rachis 

 scabrous." J3avallia concinna, Pre.sl, Retiq. Ihcnk. p. Gb*. 

 Patania, Pr. Ten I. PterUl. p. 1:38. 



Hal). ? (Presl). — From the above character I should have heeu dis- 



jiosed to refer this to our I). PliDidcri, {n. 17); but the author says of it, 

 " alliuis DamilUa arboresceuti, VVilld.," which is identical, in my opinion, 

 with our Dick.tnnia Pai-oni ; and Sjncngel, without any doubt, adduces it 

 as a synonym to Davallla arhorcscens. 



27. D. (ididul aides, II. B. K. ; fronds ample spreading 

 glabrous 2 — 3-])innate, ])riuiary divisions acuminate, pinna) 

 broadly lanceolate acuminate more or less deeply ])innatifid 

 obliquely cuneate at the base and decurrent, the segments 

 broadly ovate very obtuse nearly entire or lobato- dentate 

 bearing sori (1 — 3) in the sinuses mostly at the ui)per mar- 

 gins rather small cup-shaped. (Tab. XXVI. B.) — H. B. K. 

 Nov. Goi. Am. i. p. 24. Willd. Sp. PL v. p. 488. " D. bi- 

 ])innata," CUir. Pncl. 1801, n. 682. Dicksonia altissima, Sm. 

 ht Rees' Cycl. r. xi ? Polypodium globuliferum, lAirn. Encycl. 

 V. p. 554. Plum. Fil. t. 30. 



Hab. Hispaniola, Plumicr, Tkierry. Caraccas, Humboldt, Linden, n. 

 15(i. — This is a noble species, with large pinrne, somewhat resembling our 

 D, Pavoni, but differing in the form of the pinnse, in the fructidcalions and 

 in the absence of all hair. Sir J. E. Smith refers to Pluraier's figure for 

 his 1). atlissi7na, but describes his ])lant as having zigzag hairy ribs and 

 veins, which better accords with D. Pavoni. 



28. D. erosa, Kze. ; " frond coriaceous subtripinnatc, se- 

 condary pinna) divergent lanceolate acuminate, pinnules un- 

 equally ovato-oblong cuneate at the base below and decurrent 

 above subauriculate with the rounded or truncate apex emar- 

 ginate or crenate, the margin obtusely falcato-dentate, rachis 

 rough below squamoso-canaliculate, stipes chaffy." Kze. in 

 PI. Crypt. Pocpp. p. 88 {not Patania erosa, Presl, Plerid. nor 

 Hook. Gen. Ft I.) 



Ilab. Woods at Pampayaco, Peru, frequent, Poeppiy. — " Fronds very 

 large, H — 9 feet. Our plant differs from P. ordiiuita, Kaulf , an allied spe- 

 cies, in the coriaceous frond, in the secondary pinnae being remote, broader 

 pinnules more rounded at llie apex, the rachis beneath asperulous, above 

 stiuamulose. Dicks, adiantoides, H. B. K. and Willd., and Plum. t. 30, 

 may be distinguished by the stipes and the rachis being subpuberulous or 

 glabrous." — From these remarks of Kunze, it seems that this species has 

 the closest affinity with Dicks, adinntoidrs. But the Patania erosa of 

 Presl, and, following him, of our (Jen. Fil. 1. c., is, judging from Presl's fi- 

 gure of a pinnule, a very distinct species, which 1 here refer lo D.ciculariu. 



29. D. ordiHdtu, Kaulf.; "fronds tripinnate, secondary |iin- 

 me lanceolate altcnuato-caudate patent, i)inuides oblong-Ian- 



