536 ON THE FLOKA OF MADAGASCAR. 



Allied to Z. serrattcm and Z. Samiltonii. Stem | foot long, 

 stiffly erect from a decumbent base, simple in tlie specimen seen, 

 brownish, strongly angled, not hidden by the leaves. Leaves 

 ^ in. long, -j^ in. broad, acute, decurrent at the base, flat, bright 

 green, moderately firm in texture, with a very distinct midrib. 

 Sporangia placed in tbe axils of entirely unaltered leaves, strami- 

 neous, reniform, a line broad. — Baron 4512! 



Selagii^hELXa echinata, n. sp. . 



S, caulibus brevibus decumbentibus copiose bipinnatis, ramis ramulisque 

 laxe dispositis erecto-patentibus, foliis densissimis distichis biformibus 

 rlgidulis pallida viridibus dense ciliatis apice acuminatis straniineis sub- 

 pungentibus, plana inferioris ovato-Ianceolatis patulis, planae superloris 

 angustioribus ascendentibus squarrosisj spicis ignotis. 



A very distinct species, intermediate in habit between S. ru- 

 pestris and *S^. denticulaia. Stems 2-4 in. long, with rootlets 

 extending to the tip ; branches of all grades alternate, distant, 

 erecto-patent ; ultimate branchlets very short ; leafy branches 

 \ in. in diam. Leaves firm in texture, grey-green, densely cili- 

 ated. Leaves of the lower plane very acuminate from an ovate 

 base, ^ in. long, with a distinct nearly central midrib. Leaves of 

 the upper plane not much shorter, but narrower, ascending, and 

 recurved. Pructification none in the specimens, but no doubt that 

 of § Stachygynandru7n. — Baron 4226 ! 



