138 103. SELAGINELLA. A'. MONOSTELICAE. a'. CAULESCENTES. 



verruculose with cylindrical, semiglobose or conical projections on the 

 basal half. — Very variable. — In order to avoid confusion the name 

 S. caulescens Spring is maintained though I acknowledge that the name 

 S. involvens Hieron. has a legitimate claim on priority. 



Forma typica: Shoots 15 — 45 cm. long, the stipes proportionally very 

 long; largest pinnae deltoid to ovate-lanceolate. — Br. India to N&io Guinea. 



War. brachypoda : Like the type, but the stipes proportionally 

 very short. — Java. 



Vai*. bcllula: Shoots 50—75 cm. long; largest pinnae linear or 

 linear-lanceolate, relatively narrow, narrowed gradually from base to apex ; 

 otherwise like the type but the pinnulae not rarely simple or forked only, 

 and the spikes up to even 15 cm. long, 1— TA mm. diam. — Specimens 

 occuring in the Buitenzorg Herbarium or cultivated in the Buitenzorg Gardens 

 have the young plants with the shoots linear-lanceolate, similar in shape to 

 the pinnae of adult plants. — Western Malaya^ Philippines, New Guinea. 



(90) S. striolala, Wafh., Mens., I, 116. 



Shoots erect from a creeping base, 40 cm. long, the lower part simple, 

 terete, VU mm. thick, yellowish when dry, the upper part branched; 

 pinnae oblique, 8 on each side, often 2-piunate, the lower 15 cm. long, 

 the higher 2 — 3 cm. long; branchlets ascending, 6—15 mm. long, 2 — 2 'A 

 mm. broad including the lateral leaves. Leaves of the stipe adpressed, 

 ovate IV2 — 2 mm. long, acute, peltate or semicordate at the base, hardly 

 ciliolate; leaves of the branches heteromorphous ; of the lower plane 

 erecto-patent, subremote, broadly ovate, Vk — 2V2 mm. long, subobliquely 

 acuminate, the base truncate-cordate, apparently spuriously veined, the 

 upper side pellucid-margined, minutely denticulate, the lower side sparingly 

 denticulate at the very base; of the upper plane erect, ovate, 1 mm. 

 long, acute, somewhat keeled, minutely denticulate, ciliolate at the 

 obliquely cordate base; leaves of the branchlets similar but smaller; of 

 the lower plane subimbricate, truncate-rotundate at the base, the upper 

 side sparingly denticulate, entire towards the apex; of the upper plane 

 obliquely rounded at the base, not ciliolate. Spikes 8 — 15 mm. long, 

 square, 2 mm. diam.; sporophylla subsquarrose, ovate-lanceolate, I'A mm. 

 long, acute, gradually acuminate, strongly keeled, minutely denticulate; 

 macrospores brown, compressed, encircled by an equatorial plicate-undulate 

 wing; microspores 



Luzon. 



