346 48. POLYPODIUM, GONIOPHLEBIUM. 



br., and several similar lateral ones on each side, the upper ones broadly adnate 

 to the rachis at the base ; texture subcoriaceous ; rachis and both sides naked ; 

 main veins ^ in. apart ; areolce and sori in rows of 4-6 between the midrib and 

 edge. Hk. Sp. 5. p. 27. 



Hab. Guatemala to Guiana and Galapagos. Differs from the next by its more herba- 

 ceous texture and adnate upper pinnae. P. Richardi, Klotzsch, is a pubescent form. 



259. P. (Gomoph.} fraxinifolium, Jacq. ; rhizome stout, clothed with deciduous, 

 spreading, dark-brown, linear-subulate scales ; St. 1-2 ft. 1., firm, erect, naked ; 



fr. 2-4 ft. 1., 12-18 in. br., with numerous distinct pinnae on each side, which are 

 4-9 in. 1., 1-2 in. br., the apex acuminate, the edge entire, the base narrowed ; 

 texture subcoriaceous ; both sides naked ; main veins ^ in. apart ; areolce and sori 

 in series of 6-8. Hk. Sp. 5. p. 26. 



Hab. Columbia to Brazil and Peru. P. rhizocaulon, Willd., is a wide-scandent variety, 

 thinner in texture than the ordinary form, and thus intermediate between it and the 

 preceding. This includes several species of cultivators. 



260. P. (Gonioph.) menisciifolium, L. & F. ; st. 1-2 ft. 1., firm, erect, naked ; 

 fr. 2-3 ft. 1., 1 ft. or more br., with an entire terminal pinna 6-9 in. L, 1^-2 in. 



br., and numerous similar ones on each side, all narrowed to the base ; texture 

 subcoriaceous ; rachis and both sides naked ; main veins in. apart ; areolce and 

 sori in rows of about 4, the latter immersed and prominent on the upper side. 

 Hk. Sp. 5. p. 27. 



Hab. Panama, Trinidad, Brazil. 



** Under surface densely clothed with small scales. Lepicystis, J. Sm. 



Sp. 261263. 



261. P. (Gonioph.) incanum, Sw. ; rhizome woody, wide-creeping, the scales 

 small, dense, dull-brown, fibrillose ; st. 1-4 in. 1., firm, erect, furfuraceous \fr. 2-4 

 in. 1., 1-1 \ in. br., cut down to the rachis into subdistant spreading entire blunt 

 piniice 1-1^ lin. br., dilated at the base ; texture coriaceous ; under side densely 

 scaly ; veins united or frequently free ; sori uniserial. Hk. Sp. 5. p. 209. P. 

 Eckloni, Kze. Hk. I. c. 



Hab. Ohio to Uraguay and Chili ; Cape Colony, Natal, Zambesi-land. 



262. P. (Gonioph.) lepidopteris, Kze. ; rhizome stout, wide-creeping, densely 

 clothed with grey or reddish scales ; st. 1-4 in. L, rigid, erect, densely scaly ; 



fr. 6-18 in. L, 1^-3 in. br., cut down to the rachis into horizontal entire pinnce 

 2-3 lin. br., the lower reduced very gradually ; texture very thick ; both sides 

 clothed, the lower very thickly, with ferruginous or white hairs and scales ; veins 

 hidden; sori copious. #&. Sp. 4. p. 212. j3, P. sepultum, Kaulf. ; fr. ovate- 

 lanceolate; lower pinnce scarcely reduced. y, P. rufulum, Presl; scales of 

 rhizome bright reddish-brown ; pinnce in. br., blunt, much twisted. 



Hab. Mexico to Galapagos, Peru, and Rio Janeiro. 



263. P. (Gonioph.) squamatum, L. ; rhizome stout, wide-creeping, clothed with 

 adpressed lanceolate scales ; st. 6-12 in. 1., rigid, erect, scaly ; fr. 6-12 in. L, 

 2-4 in. br., cut down nearly or quite to the rachis into entire bluntish pinnce 

 1-2 in. 1., l|-3 lin. br., with a considerable space between them, dilated and 

 often united at the base ; rachis and under surface densely coated with minute 

 membranous ovate-acuminate squarrose scales ; veinlets obscure ; sori large, 

 copious. Hk. Sp. 4. p. 209. 



Hab. West Indies and Mexico to Peru. P. tridens, Kze., from the Galapagos, appears 

 to be a luxuriant state of this with forked pinnae. 



