70 103. SBLAGINELLA. A'. MONOSTELICAE. a'. RADICANTES. 



or connected rumples, the apical ribs encircled by a ring-shaped crest; 

 microspores dirty-yelluW or pale-orange, provided with bacilliform or 

 stipitate-capitate projections on the basal side. — Two distinct forms: 



Forma angustior: Stem and branches 10 — 15 mm. broad including 

 the lateral leaves which are 5 — 7Vs mm. long and 2 — 3 mm. broad; 

 leaves of the upper plane much acuminated. 



Forma latior (typica): Stem and branches 16 — 20 mm. broad including 

 the lateral loaves which are 8 — 10 mm. long and 3 — 4 mm. broad; leaves 

 of the upper plane slightly acuminated. 



Borneo. 



(10) S. Brookiili, JKerow., Hedwi., LI, 252. 



Shoots decumbent, subascending towards the apex, 20 — 45 cm. long, 

 simple or one or more times forked above the base, otherwise pinnate, 

 the stem compressed, 2-sulcate down the face, flattened on the back, the 

 pinnae erecto-patent, simple or branched again, the branching between 

 simply pinnate and copiously dichotomous, very regularly foliate, as are 

 the stem and main rachis, the ultimate branchlets rather suberect, 2 — 6 

 cm. long, 8 — 16 mm. broad, the stem, rachis and penultimate rachises 

 broader, even to 20 mm. broad including the lateral leaves. Leaves of 

 the lower plane conspicuously crowded, contiguous or slightly remote on 

 the stem and primary branches, imbricate on the branchlets, horizontally 

 spreading, the higher rather erecto-patent; of the main stem sometimes 

 somewhat deflexed, unequal-sided, oblong, hardly falcate, to 9 mm. long, 

 to 4 mm. broad at the base, blunt or subacute at the apex, dilated and 

 cordate on the upper side at the base, rounded on the lower side, the 

 upper surface dark-green, the lower pale-glittering and distinctly spuriously 

 nerved on both sides of the midrib, the upper side pellucid-margined and 

 very minutely denticulate, the lower side entire, but obsoletely denticulate 

 at the apex and the base; those of the ultimate branchlets similar but 

 smaller, 4 — 8 mm. long, IVs— 2V2 mm. broad, less cordate on the upper 

 side, rotundate-cuneate on the lower side at the base ; leaves of the upper 

 plane much smaller, imbricated, obovate, the largest 3Vj — 4V2 mm. long, 

 rounded or bluntish at the apex, the edge very minutely denticulate, the 

 outer base produced, cordate-auriculate, .subhamate-incurvate, the inner 

 base rounded or slightly cordate. Spikes solitary or 2 — S-nate, nearly 

 square, 1 — 3V2 cm. long, 2V2 — 3 mm. diam.; sporophylla uniform but those 

 of the lower plane somewhat larger, triangular-ovate, erecto-patent, imbri- 



