734 86a. leptochilus. § 1. poeciloptebis. 



:fc. Barren fronds i — f 7i c-'^^- ^oad. Areolae without free veinlels. 



(^) L. Linnaeanus. 

 i^,^. Barren fronds 4 — iO c.M. broad. Areolae with free veiulets. 



(5) L. decurrens. 

 a.a. Barren fronds typically 3-fid, but sometimes simple or pinnate. 

 X. Segments of the fertile fronds lanceolate-oblong, rather short. 



(4) L. trifidus. 

 x.x. Segments of the fertile fronds narrowly linear, rather long. 



(5) L. latifolius. 

 a.a.a. Barren fronds typically 3-foliate or pinnate, but some of them sometimes 

 simple, or very rarely 2-pintuile jVNo. lOa. 



h. Fronds pedatisect., (6) L. Hollrungii. 



h.h. Barren fronds with i — 6 pairs of lateral pinnae. 

 c. Fronds small, under iZ^j^ c.M. long. 



+. Lateral pinnae i-jugate. (7) L. zeylanicus. 



+,+. Lateral pinnae 2—6-}ugate. (8) L. inconstans. 



C.C. Fully developed fronds larger, more limn fj^'/i c.M. long. 



d. Lateral pinnae Iruncale at the base, the edge froadly crenate 

 and finely toothed. (9) L. prolifer. 



d.A. Lateral pinnae cuneate or rouiuled at the base, the edge entire, 

 repand, toothed or sinuate. 



e. Pinnae rather short. (10a) L. heteroclitus. 



e.e. Pinnaerathrrlong. (10b) L. stolonifer. (') 



(11) L. diversifolius. 

 b.b.b. Bairen fronds as a rule copiously pinnate. 

 1. Fronds to 30 c.M. long. 



S. Pinnae entire or crenate. 



:4c. Pinnae entire, acuminate, narrowed at the base. ■ 



(12) L. Preslianus. 

 i(..-:)e:Pinnae crenate, acute, truncate at the base. 



(15) L. exsculptus. 

 $.§. Pinnae lobed. (14) L. celebicus. 



±.±. Fully developed fronds mostly 30 — 70 c.M. long. 



S. Pinnae herbaceous or subcharlaceous, under 4 c.M. broad. 

 3. Pinnae at best incised to about ^l^-way down to the 

 casta; areolae mfh few to several free veinlets. 



(15) L. vfrens. 

 (*) I don 't know whether this species is well-classified here. 



