THE FEKN-ALLIES OF THE MALAY PENINSULA. 141 



I. LYCOPODIACEAE. 



Epiphytic or terrestrial plants. Khizome when present creep- 

 ing. Stems simple or dichotomously branched, covered with or 

 with few scattered, small ovate or linear leaves entire or rarely 

 serrate, sessile, 1-nerved, multifarious (rarely dimorphic and dis- 

 tichous as in Selaginella). Sporangia solitary in the axils of or- 

 dinary leaves all down the stem or in terminal spikes in the axils 

 of modified leaves (bracts), uniform, compressed or turbinate 1-2- 

 ce.lled. Spores uniform, globose, granulate. Genera 4. Species 

 about 100 in whole world. 



Stems densely leafy. Sporangia 1-celled 

 reniform 



Stems with distant minute leaves. Spo- 

 range 3-celled, 3 lobed 



1 Lycopodium. 



1 L. serratu 



m. 



2 Psilotum. 



1. Lycopodium, L. 



Epiphytic or terrestrial, often much branched, leafy through- 

 out. Sporangia usually in terminal spikes more rarely in the axils 



of stem, leaves reniform 1-celled, dehiscing across the top. Spores 



with 3 lines radiating from the top. 

 Species over 90. 



* Sporangia in the axills of leaves all down 

 the stem. Terrestrial, leaves serrate 



** Sporangia in indistinct terminal spikes, 

 the bracts differing slightly from 

 leaves. Long epiphytes. Leaves small, 

 stiff, appressed 



Leaves thin, spreading, 4 in. long 



*** Spikes distinct, slender. Bracts dif- 

 ferent from leaves. Spikes several, 

 long, slender. Epiphytic. Leaves 

 elliptic almost covering the stem . . 



Leaves spreading, stiff, ovate, lanceolate, 

 acute, subdistichous. Leaves lanceo- 

 late. Bracts blunt ovate 



Leaves narrow, lanceolate. Bracts ovate 

 acute 



Leaves short, stiff, ovate, acute. Spikes 

 very slender. Bracts ellipsoid, ob- 

 tuse, shorter than the Sporanges 



Leaves stiff, lanceolate, acuminate, ap- 

 pressed quaquaversal .5 in. long 



****Terrestrial. Spikes solitary at ends 

 of branches, erect plant. Leaves 

 small, narrow 



Spikes numerous at ends, cylindric. Much 

 blanched, climber. Leaves very 

 small 



2 L. Dalhousianum. 



3 L. squarrosum^ 



4 L. nummularifolium. 



o L. phlegmaria. 



6 L. coralium. 



7 L. filiforme. 



8 L. phyllanthum. 



9 L. cernuum. 



10 L. casuarinoides. 



R. A. Soc, No. 80, 1919. 



