90 103. SELAGINELLA. A'. MONOSTELICAE. a<. ASCENDENTES. 



nearly smooth, the apical ribs encircled by a narrow, slightly elevated, 

 ring-shaped crest; microspores yellowish or pale-orange, provided with 

 bacilliform or stipitate-capitate projections on the basal side. 

 Borneo. 



(31) S. baiiajaoensis, mefon.. Fed., Rep., X, 45. 



Shoots 20 — 25 cm. long, the lower part simple, stipitiform, compresso- 

 quadrangular, stramineous-green, smooth, to SVj mm. thick, the upper 

 part irregularly decompound, triangular or ovate in outline, the pinnae 

 2 — 3-pinnate. Leaves heteromorphous on both stem and branches; lateral 

 leaves of the stipe spreading, broadly oblique-ovate, unequal-sided, mucronate- 

 acuminate, auriculate and broadly rounded on the upper side at the base, 

 rotundate-truncate on the lower side, with the upper edge denticulate, 

 ciliate towards the base, the lower edge piloso-denticulate, ciliate at the 

 base, the midrib thikened towards the apex, the largest leaves 2Vz mm. 

 long and 1 'A mm. broad ; leaves of the upper plane of the stem ovate, 

 ciliated and incurvate-auriculate on both sides at the base but more 

 prominently on the outer side, piloso-denticulate, aristate, the arista V2 as 

 long as the blade; lateral leaves of the main and secondary rachises 

 similar to those of the stipe but larger, to 5 mm. long and 2V2 mm. 

 broad, less acuminate, and the lower edge entire except at the minutely 

 denticulate apex and the ciliate base; leaves of the upper plane of the 

 main and secondary rachises similar to those of the stipe, sparingly 

 pellucid-dotted; lateral leaves of the branchlets similar to those of the 

 rachises but smaller, IVj — 2 mm. long and 'A — 1 mm. broad, pellucid- 

 margined on the upper side; leaves of the upper plane of the branchlets 

 similar to those of the rachises but smaller, the edges sparingly denticulate, 

 the base rotundate on the inner side, sparingly ciliate. Spikes solitary 

 or double, square, 3 — 12 mm. long, 2 mm. diam. ; sporophylla triangular- 

 ovate, shortly aristate-acuminate, keeled, hardly pellucid-margined and 

 copiously denticulated on both sides, ciliolate at the base, the ventral 

 ones somewhat broader, the largest 2 mm. long; macrospores yellowish 

 or whitish, encircled by a wing-like, undulated, hyaline, equatorial crest, 

 the basal side provided with crowded, flexuose, branched or reticulated 

 rumples, the apical ribs similar to the equatorial wing; microspores 

 yellowish or orange-red, provided with minute rumples and scattered 

 conical or short-stalked capitate projections. 



iMzon. 



