68. LYGODIUM, EULYGODIUM. 437 



2. L. dichotomum, Sw*. ,; primary petiole so much reduced that the fork seems 

 almost to spring from the main rachis, secondary 1-2 in. L, firm, naked ; pinnl. 

 digitate, with 5-6 lobes reaching nearly down to the base, or once or even twice 

 forked ; ult. barren divisions 4-8 or even 12 in. L, -f in. br., the fertile ones 

 contracted, sometimes so much so that the lamina is nearly lost ; the spikes 1-2 

 lin. 1., in close marginal rows; texture subcori&ceous ; surfaces naked. HTc.&Gr. 

 t. 55. JBeddome, t. 62. L. circinatum and pedatum, and probably flexuosum, 

 Sw. Ugena, Cav. 



Hab. Chusan, Hong-Kong, Philippines, Ceylon, Malay Peninsula and Isles. If, as 

 seems likely, this is L. flexuosum, Swz., that is the oldest specific name. 



3. L. digitatum, Eaton (not Presl) ; primary petiole short or obsolete, secondary 

 1 in. or more 1. ; pinnl. palmate, cut down nearly to the base or once forked, 

 the lobes 6-12 in. 1., |-1 in. br., the point acute or bluntish, the base narrowed, 

 the edge of the barren ones crenulate or finely toothed ; texture subcoriaceous ; 

 surfaces glossy, naked ; spikes 1-2 lin. ]., in close rows along the edge of the 

 lobes. Eaton, Fil. Wright $ Fend. p. 217. 



Hab. Gathered about Panama and in New Granada by Seemann, Cuming, and Hayes, 

 and in Guatemala by Salvin and Godman. Apparently larger and less divided than the 

 preceding, which is Presl's digitatum, but very doubtfully distinct. 



4. L. semihastatum, Desv. ; primary petiole nearly or quite obsolete, secondary 

 1 in. or more ; pinnl. once forked, each short-stalked, divisions (in our specimen) 

 simple, ligulate, 6-8 in. 1., nearly 1 in. br. without the spikes, the base unequal, 

 one side very cordate ; texture coriaceous ; surface naked ; spikes j in. 1., in close 

 rows along the edge of the segments. Ugena, Cav. H. auriculatum, Cav. 



Hab. Philippine and Marianne Isles, Cuming, &c. The sterile pinnules are described 

 as palmate. The fertile ones, except that they are in pairs instead of being numerous 

 and arranged pinnately, are like those of pinnatifidum. 



5. L. articulatum, Rich. ; primary petiole j-^ in. L, secondary 1 in. or more 1. ; 

 barren pinnl. twice forked, each bearing 4 ligulate-oblong segm., which are 2-3 

 in. 1., about \ in. br., blunt at the point, very distinctly articulated at the base 

 on a short petiole ; texture subcoriaceous ; rachis and surfaces naked ; fertile pinnl. 

 many times dichotomous, the short spikes in dense clusters, which are often 

 almost destitute of lamina. A. Rich. Fl. t. 15. 



Hab. New Zealand. A very well-marked species. 



6. L. trifurcatum, Baker; primary petiole obsolete or very short, secondary 

 1-1^ in. 1. ; pinnl. twice dichotomously forked, and each division bipartite 

 nearly to the base, the ult. barren divisions 4-6 in. 1., |- in. br., the point acute 

 or bluntish, the edge crenulate, the petioles not articulated ; texture subcoriaceous ; 

 rachis and surfaces naked ; fertile divisions contracted, cut down nearly to the 

 rachis, the short spikes in clusters of 3-6 upon the lobes. 



Hab. Solomon Isles, Milne 511, 591, /. G. Veitch ; Louisiade Archipelago, McGillivray. 

 This seems a very distinct species. In one of our specimens the spikes are 1 to 3 

 together, and the portion of the lamina that supports them is only linear. 



'""" Fully-developed barren pinmiles pinnate. Sp. 7-13. 



7. L. scandens, Sw. ; primary petiole very short, secondary j-^r in. 1. ; pinnl. 

 4-8 in. L, 2-4 in. br., with a terminal segm. and 4-5 on each side, which are very 

 variable^n shape, usually simple, ovate or ligulate-oblong, with a rounded or 

 cordate base, sometimes hastate or even slightly pinnate below, always articulated 

 on a short petiole, spreading from the rachis at right angles ; texture firm ; sur- 



