FLOKA OF XORTII--VrESTERX ilEXICO. 339 
:BolypQdie<B, witli free or partiallj anastomosing veins. On taking a general view of this gryup, it appeaw 
to me verj questionable whether the difference in venation is of sufficient importance to justify the separa- 
tion of species so closely allied in general habit. 
655. Pleopeltis lanceolaia, Presl, Pterid. p. 193.— J. Sra. Gen. Fil. 1. c. p. m.—Pohjpodium 
lanceolatum, L., Willd. 1. c. p. 153 (Plum. Fil. t. \S7) .—Polypodium macrocarjmm , "Willd., I.e. p. 147. 
—Pleopeltis, Presl, 1. c— J. Sra. 1. c— KaulfUss, En, Fil. p. 2%^.—PkopeUis Helena, Prcsl, 1. c. 
Sierra Madre (n. 1915). 
Very generally distributed througliout tropical America and the "West Indiau Islands; also found In 
St. Helena, Madagascar, the Indian Peninsula, and Juan Fernandez. 
656. Ctenopteris delicatula, J. Sm.—Pohjpodhim delkaUilum, Mart, et Gal, Mcx. Fil. p. 35. 
t. 7. f. 1.— Fee, Gen. Fil. p. 235. Near Guajimalpa, on trees in humid forests (Sehaffner!). 
657. XiPiioPTEitis serrulata, Kaulf. En. Fil. p. 85.— Fee, Gen. Fil. p. 100. —Grammitis serru- 
lata, Sw. Near Huatuseo (Scliaffner !). 
Tropical America and "West Indian Islands generally. 
658. GvMNOGRAMME Calomelauos, Kaulf. supra, p. 228. Foot of the Ccrro dc Pinal, in -noods. 
Very generally spread over tropical and extratropical America and the "West Indian Islands. "Varies 
much in the ultimate segments being obtuse or acute, and more or less inciso-dentate, rendering it impos- 
sible to say vphether the whole are forms of one or more species ; the same remark is equally applicable to 
the species with yellow farina. 
659. Gymnogramme pedata, Kaulf. 1. c. p. m,-~Hemionitis pcdata, Sw. Syn. Fil. pp. 20 et 209. 
t. 1. f. Z.~~Neurogramme pedata, Lk. En. Fil. Hort. Berol. p. 139 (1841).— Fee, Gen. Fil. p. 169. 
Sierra Madre (n. 1937). 
This is a rare Fern, for, although described and figured long since by Swartz, and even cultivated in 
the Berlin Botanic Garden in 1833, from whence I received a specimen, its native locality does not seem to 
have been exactly known until discovered by Dr. Seemaun ; the present are the first native specimens I have 
seen. 
660. Llavea cordifolia, Lag. Gen. et Sp. Plant, p. 33 {1816).— Ceratodacty lis osmundoides, J. 
Sm. in Hook. Gen. Fil. t. 36.— Journ. Bot. vol. iv. p. 48.— Fee, Gen. Fil. p. 22S.—Allosorus Kar- 
winskii, Kunze in Linn. vol. xiii. p. 138.— Schk. Fil. Suppl. t. 4.— Mart, et Gal. Fil. Mcx. p.47.— 
Botryogramme Karwimkii, Fee, Gen. Fil. p. 166. t. 15. I.e. ilexico (Karwinsky, Hartweg, Liebold, 
Galeotti) . 
In liabifc this genus differs entirely from AUosorics, its natural affinity being with Coniogramma of Fee, 
a genus founded on Qymnogramme Javanica and serrulata of Blumej from which Llavea differs in having 
the upper portion of the frond contracted into fertile silir^uo^form segments, including the sporangia;, while 
the fertile segments in Coniogramma are plain, the sporanglsD occui)ying nearly the whole length of the 
veins, forming naked, linear sori. 
661. Hemionitis palmatay L., Willd. I.e. p. 129- — J. Sm. Gen, FiK 1. c- p. 69. Sierra Madre 
(n. 1938). West Indian Islands. 
663. Hemionitis heder{efoUa, J. Sm,. ; frondibus longe stipitatis cordatis quinqurlobis rufo- 
tomcntosisj lobis integerrimis^ infcrioribus minoribus, stipitibus glabris nitidis tcrctibus; vernatiis 
2 u 2 
