146 THE FERN-ALLIES OF THE MALAY PENINSULA. 



Singapore. Johor, Tana Rlmto (Ridley 4342). Ma- 

 lacca. Abundant on the old chapel ruins; Bukit Bruang 

 (Derry 1101). Dindings, Telok Sera, the slender form canil- 

 laceum (Eidley 7140). 



Distrib. As of genus. 



2. P. complanatum, Sw. Syn. Fil. 188, 4141. t. 4. fig. 5. 



Plant 6 in. to two feet, much branched, branches long, 

 flat .15 in. wide. Leaves very minute, tooth-like. Sporanges 

 about as large as in triquetrum more distinctly trilobed. Less 

 common, on Mangroves and other trees. 



Singapore (Wallich) Kranji (Hullett) : Sungei Morai 

 (Eidley 6321). Johor, Scudai road at 4th mile; Panchur 

 and Johor Lama (Eidley 10221) also Batu Pahat. Perak, 

 Taiping Hills (Long). 



Distrib. As of genus. 



III. SELAGINELLACEAE. 



Terrestrial herbs. The sporanges not enclosed in any outer 

 wrapper, but in the axils of unaltered or modified leaves on a long 

 or short stem, of two kinds, the microsporanges containing numer- 

 ous minute dust-like microspores, genera existing two, Selaginella 

 and Isoetes. 



Distrib. The Whole World. 



I. Selaginella. 



Stems erect or creeping, branched. Leaves small usually mem- 

 branous sessile, or subsessile, in 4 rows, dimorphous usually ob- 

 lique, 2 rows of the lower plane larger more spreading oblong 

 rhomboid or ovate, of the upper plane smaller about half as big, 

 ovate or oblong, close, appressed to the stem and cuspidate usually 

 keeled. Spikes on the ends of the branehlets usually square in 

 section. In one group Homostachyae. All the bracts similar 

 lanceolate acuminate, in the other TIeterostacliyae bracts dimorphic 

 resupinate 2 rows being lanceolate acuminate or acute on the same 

 plane as the small leaves, and 2 rows much smaller pale, usually 

 ovate or elliptic cuspidate, on the plane of the larger leaves. Micro- 

 sporanges in the upper part of the spike, Macrosporanges in the 

 lower part, both splitting across the top. 



Species upward of 400, ranging from arctic Europe to Austra- 

 lia and from North to South America. Abundant in the tropics. 



§1. Homostachyae. Spikes with all the bracts similar. 



* Small prostrate creeping plants. Little or not 



branched, leaves close set ciliate . . 1 Ridleyi. 



Little or not branched, leaves close set not ciliate 2 Gurtisii. 



Branches numerous .5 in. long leaves not touch- 

 ing. Upper plane leaves oblong not ciliate. 

 Lower plane ovate, glabrous . . . . 3 selangorensis. 



Jour. Straits Branch 



