100 103. SELAGINELLA. Ai. MONOSTELICAE. a*. ASCENDENTES. 



denticulate, cuneate and ciliolate in the lower half, ciliate and very 

 narrowly auriculate at the base, the lower side entire, ciliate at the 

 rotundate-cuneate base, the midrib thickened towai-ds the apex, flanked 

 by spurious veinlets, the largest leaves IVj — 2 mm. long, 'A — "U mm. 

 broad; leaves of the upper plane erect; of the stipe and main rachis 

 falcate-ovate, aristate-acuminate, piloso-denticulate on both sides, ciliate 

 at the base, the inner base rounded, the outer produced, cordate-auriculate, 

 the cusp Vs — Va as long as the blade, the largest leaves 3—4 mm. long; 

 of the branches similar, shorter, more sparingly denticulate, much longer 

 cuspidate, often non-ciliate at the base. Spikes 3 — 9 mm. long, nearly 

 2 mm. diam. ; sporophylla deltoid, shortly aristate-acuminate, piloso- 

 denticulate, keeled, the ventral ones somewhat larger, I'A mm. long; 

 macrospores pale-reddish, yellowish or reddish-blackish, provided with 

 flexuose, branched or reticulate rumples on the basal side, the apical 

 ribs encircled by an equatorial ring; microspores yellowish or orange, 

 provided with stipitate-capitate projections on the basal side. 

 iMzon. 



(43) S. fallax, Micron., Fed., Rep., X, 104. 



Shoots 20 — 30 cm. long, the lower part simple, stipitiform, greenish- 

 or reddish-stramineous or bluish-grey, compresso-quadrangular, 2 'A mm. 

 thick at the base, the upper part sub-3-pinnate, ovate in outline. Leaves 

 heteromorphous ; lateral leaves spreading; of the stipe remote, very 

 unequal-sided, broadly oblique-ovate, broadest on the upper side, shortly 

 acuminate, minutely denticulate on both sides, the upper side gradually, 

 the lower suddenly, ciliated towards the cordate base, the largest leaves 

 2Vj mm. long and nearly 2 mm. broad; of the main rachis similar to 

 those of the stipe but larger, rather entire on the lower side, to 5 mm. 

 long and 3 mm. broad; of the ultimate branchlets approximate, less 

 unequal-sided, lanceolate-falcate, bluntish, hardly spuriously veined, with 

 the upper side pellucid-margined, minutely denticulate, gradually ciliate 

 towards the base, cuneate in the lower half, narrowly rounded at the 

 very base, the lower side entire, ciliate at the truncate-rotundate base, 

 the largest leaves I'A — 2 mm. long and 'A — 1 mm. broad; intermedial 

 leaves erect; of the stipe remote, unequal-sided, broadly oblique-ovate, 

 shortly denticulate, shortly cordate and ciliolate at the base, the largest 

 leaves 3 'A mm. long, with the cusp 'A as long as the blade ; of the main 

 rachis similar to those of the stipe but somewhat smaller, pellucid-dotted, 



