102. LYCOPODIUM. § 1. RHOPALOSTACHYS. 3*. CERNUA. 49 



leaves thicker, very rigid, those of the ultimate branchlets conspicuously 

 uncinate, the spikes somewhat larger, to 20 mm. long, SVj — 5 mm. diam. 

 Malaya to Polynesia^ Central America^ West India. 



(44) Ij. casiiarinoidefil, Spring, Mon., I, 94; Bk., Fern All., 

 24; Hk., Icon. PL, X, tab. CMLXVIII. 



Shoots wide-scandent, the branches copiously compound; ultimate 

 branchlets sometimes 15 — 25 cm. long, pendulous, very slender. Leaves 

 of the stem scattered, peltate near the base, with the basal portion 

 similar to the apical but shorter; of the branchlets variable, conspicuously 

 decurrent, firm, green or reddish, sometimes remote, with only a minute, 

 persistent, free blade with a long, subulate, hyaline, deciduous or 

 persistent, membranaceous, entire, toothed or lacerated apex, sometimes 

 closer, with a lanceolate-aristate, arcuate free blade 3 mm. long. Spikes 

 by themselves on special branchlets, panicled, cylindrical, 2 '/a — 7 'A cm. 

 long, 4 mm. diam. ; sporophylla broadly ovate, ascending, cuspidate- 

 acuminate, with scariose cusp and edges. 



Malaya; North India, South China, Assam., Bhotan. 



b. Diphasiuin. 



*. Main stem decumbent, copiously foliate, ^cith feic short, simple, decum- 

 bent branches. (45) L. carolinianum. 

 *.*. Main stem creeping, erect or scanclent, sparsely foliate, with several to 

 many elongated, decompound, erected or ascending branches. 

 9. Leaves with a long, subcapillary, scariose apex. 



(46) L. penicilliferum. 

 2.9. Leaves without a long, subcapillary, scariose apex. 



3. Barren and fertile regions not separate, the latter springing 

 from the former. 



J. Leaves 4-farious, the largest laterally, the smallest dorsally 

 and ventrally arranged. 



S. Spikes 1 — 2 on a simple or forked peduncle from 



the apex of a branchlet. (48) Wightianum. 



S.S. Spikes 2 — 16 on a branched peduncle from the axis 



of a branch. (47) L. complanatum. 



Fern Allies. 4 



