08. LYGODIUM, §§ IIYDROGLOSS-UM. 439 



upper se.gm. sessile, ovate-deltoid, pinnatifid, lower short-stalked, deeply pin- 

 iiatiiid or ])imiate in the lower part, tlie divisions pinnatifid, the base nut arti- 

 culateii ; texture herliaceoiis ; surfaces naked or slightly villose ; spikes 1-2 lin. 1., 

 terminating tlie ultimate lobes. 



Hab. Madagascar and the Comoro Isles ; collected by Bojer, Kirk, and Speke. — The 

 segments are very close, often imbricated, and in well-developed pinnules six on each 

 side below the piuiiatifid apex. This is midway between _/ap6<viicit?n. and ^Jo/i/sfac/t^/MOT, 

 and has the pinnatifid barren segments of the latter. 



13. L. japonicum, S\v. ; yrimnry petiole very short, secondary -|-1 in. 1. ; pinnl. 

 4-8 in. 1., nearly as broad, deltoid ; the terminal seqm. pinnatifid or hastate, the 

 lateral ones 2-3 on each side, very unequal, not articulated at the base, the lower 

 ones long-stalked and pinnate in the lower part, the divisions entire or crenulate ; 

 texture herbaceous ; surfaces naked or slightly villose ; spikes 1-2 lin. 1., the lamina 

 of the fertile divisions often much reduced. — Becldome, t. (fl. 



Hab. Japan and the Himalayas to Ceylon, Java, Philippines, Hong-Kong, and Noi th 

 Australia. — L. Finluysonianum, \V;ill., and L. tenue, Blume, both appear to be forms of 

 this with the lamina of the fertile divisions nearly obsolete. 



§§ Hydroglossum, Presl. Veins anastomosing. Sp. 14-lG. Fig. C9. c. Lygo- 

 dictyon, J. Smith. 



14. L. (Hydro.) heterodoxiim, Kze. ; primary petiole obsolete or very short, 

 secondary 1^ in. 1. ; pinnl. with 2-3 bipartite segm., the ult. divisions 4-G in. 1., 

 f in. br., the petioles not articulated, the lowest often \ in. 1. ; texture thin ; racJiis 

 and surfaces naked ; veins joining copiously ; spikes 1 lin. 1. ; in close rows along 

 the edge of the leafy divisions. — Kunze, t. 113. H. spectabile, Liebm. L. Lin- 

 deni, Hort. 



Hab. Mexico and Guatemala. 



15. L. (Hydro.) reticulatum, Schk. ; primary /^cifzo/e ^-|^ in. 1., secondary j-| 

 in. 1. ; pinnl. G-9 in. 1., 4-6 in. br., v^ith a terminal segm. and 4-6 nearly uniforni 

 ones on each side, which are cordate-hastate or ligulate-oblong, rounded or cordate 

 at the base, 2-3 in. 1., ^-| in. br., all articulated at the base, the lower ones short- 

 stalked ; texture subcoriaceous ; rachiscs naked or slightly villose, sometimes 

 ebeneous ; .spikes 1-3 lin. ]., in. close rows along the edge of the segments. — Bclik. 

 ^ 139. II. polycarpum, IVilld, H. scandens, Pres^. L. Schkuhri and Forsteri, 

 J. Sm. 



Hab. Polynesian Isles and East Tropical Australia. 



16. L. (U\ dro.) lanceolatunt, Desv. ; primary joe^zWe short or obsolete, secondary 

 1 in. 1. ; pinnl. 8-12 in. 1., G-10 in. br. ; segm. 3-4 on each side, uniform, 4-6 

 in. 1., |-1 in. br., all stalked, articulated at the base, the base rounded or cuneate, 

 never cordate ; texture coiiaceous ; rachis and surfaces glossy ; spikes 1-2 lin. 1., 

 in close rows along the edge of the segments. — H. madagascariensis, Poir. 



Hab. Madagascar, Bojer, Forbes, Meller, &c. 



Sub-Ord. V. MARATTIACEiE. 



Caps, opening by a slit down one side or a pore at the apex, without a ring, 

 usually joined together in concrete masses (synangia). Vernation circinate.* 

 Gen. 69-72. 



* An elaborate illustrated monograph of the sub-order (excluding Dancta) was pub- 

 lished by De Vriese and Hartitig at Leyden in 1853. They define altogether ninety-four 

 specie^. 



