156 103. SELAGINELLA. 



entire at the centre, the upper base cordate-rotundate, ciliolate, the higher 

 ciliae dentiform, the lower base cuneate-truncate, provided with 1—5 

 moderately long ciliae, the costa flanked by 2 narrow spurious veinlets 

 near the apex; of the main rachis 7 mm. long and 3 mm. broad; of the 

 branches growing gradually smaller; of the ultimate branchlets 5— 5Va 

 mm. long and nearly 'A as broad; intermedial leaves, erect; of the stipe 

 subfalcate-ovate, narrowly pellucid-margined, rather entire, the apex shortly 

 aristate-acuminate and hardly denticulate, the outer base produced, the 

 auricle slightly incurved, ciliate, the inner base rounded, ciliolate or den- 

 ticulate, the largest leaves 6 mm. long and 2Vi mm. broad; of the 

 branched portion grovsdng gradually smaller; of the branchlets cuneate at 

 the base, or the outer base rounded. Spikes terminal, solitary or double, 

 quadrangular, 5—10 mm. long and 2— 2V2 mm. diam. ; sporophylla isomor- 

 phous, deltoid-ovate, shortly aristate-acuminate, keeled, denticulate, to 

 IVi mm. long; microspores yellowish or orange, provided on the basal 

 side with conical or capitate projections; macrospores 



Forma typica. — New Guinea. 



lar. luisiadensiis: Intermedial leaves hardly pellucid-margined 

 towards the apex only, the apex subabruptly aristate, the cusp a little 

 longer. — Bossell Island. 



b. Uctei'OSiiachyii. 1. Intertextae. 



1. Lateral leaves hardly longer than broad. 



A Spikes to PU mm. broad. (112) S. calcicola. 



A A Spikes more than VU mm. broad. (113) S. alutacea. 



*.l. Lateral leaves distinctly longer than broad. 



9. Spikes not resupinate. (114) S. Rothertii, 



2.9. Spikes resupinate. 



3. Largest lateral leaves to 1 mm. long. 



4- Lateral leaves cordate at the base. (115) S. oligophylla. 

 ++ Lateral leaves not or hardly cordate at the base. 



(116) S. eurycephala. 

 3.3. Largest lateral leaves more than 1 mm. long, 

 d. Leaves croicded everywliere. 



9 Lateral leaves ciliate at least on 1 side at the base. 



(117) S. ujensis. 



