Selaginellaceae 



27 



(MacNab) Bak. Iwa-hiba. Evergreen; stems densely 



tufted, densely leaved, ascending to spreading, 5-12 cm. long, 

 2.5-3 mm. wide, branched, gray-green on upper side, pale 

 green beneath, flat, the branches sparingly forked in one plane; 

 roots all at the base, interwoven to form a simple or rarely few- 

 branched false stem to 15 cm. long; leaves of two forms, in 4 

 rows, ascending, the larger or lower ones ovate, 1.5-2 mm. 

 long, short-acuminate, filiform-tipped, serrulate, the margins 

 cartilaginous, the smaller or upper leaves slightly smaller, sub- 

 erect, scarcely oblique; spikes slighdy narrower than the sterile 

 branchlets, regularly 4-angled, the bracts ovate-deltoid, about 

 1.5 mm. long, acuminate, awn-tipped, serrulate, green, white- 

 cartilaginous on margin. Shaded rocks; Hokkaido (Oshima 



Prov. including Okushiri Isl.), Honshu, Shikoku, Kyushu; 



rather common. Korea, Ryukyus, Formosa, Philippines and 



China to n. India. 



5. Selaginella pachystachys Koidz. S. caulescens sensu 

 auct. Japon., non Spring; S. japonica Moore ex MacNab, non 



Miq.; S. caulescens var. japonica (Moore) Bak. Kata-hiba. 



Plant pale green, sometimes rubescent; basal stems slender, 

 shallowly creeping, unbranched at base, branched on upper 

 part, 0.5-0.7 mm. across, whitish, with ovate scarious scales 

 about 1 mm. long; aerial stems 8-20 cm. long, erect from an 

 ascending base, 15-30 cm. long, unbranched in lower half, 

 pinnately much branched above in one plane, flat, frondlike, 

 the branches 3-10 cm. long, 2-2.5 mm. wide, the branchlets 

 1.5-2 mm. wide, flat, densely leaved; leaves on aerial stems 

 rather loose, all alike in the petiolelike lower part, dimorphic 

 on upper part; leaves of lower plane ovate to broadly so, about 

 1.5 mm. long, acute, oblique, serrulate-ciliolate at least on the 

 upper side near base, those of the upper plane 1/2-1/3 as long 

 as the lower ones, appressed, ovate, cuspidate, the midrib prom- 

 inent on upper side; bracts uniform, dense, in 4 rows, deltoid- 

 ovate, about 1 mm. long, cuspidate, minutely serrulate toward 

 base. Mountains; Honshu (Kanto Distr. and westw.), Shi- 

 koku, Kyushu; common. s. Korea, Ryukyus, Formosa, and 



(?) China. 



6. Selaginella doederleinii Hieron. S. atroviridis sensu 



auct. Japon., non Spring Oni-kuramagoke. Stems erect 



to ascending, flexuous, much branched, to 30 cm. long or 

 more, deep green above, pale green beneath, 1.5-2.5 mm. 

 across, or 6-9 mm. wide including the leaves, 3-grooved on 

 upper side, the rhizophores to 10 cm. long on the lower half; 

 branches forked; leaves of lower plane larger, narrowly oblong- 

 ovate, denticulate, slightly oblique, spreading, rounded at base 

 on upper side, those of upper plane appressed, ovate, about 1.5 

 mm. long excluding the short-awned tip, denticulate; fertile 

 branchlets 4-angled, the bracts all alike, ascending, deltoid- 

 ovate, 1.5-2 mm. long, denticulate, green. Woods in low- 

 lands and hills; Honshu (Izu Isls.), Kyushu (Koshiki, Yaku- 



shima, Tanegashima). Ryukyus, Formosa, China, and 



Indochina. 



7. Selaginella remotifolia Spring var. japonica (Miq.) 

 Koidz. S. japonica Miq.; S. k/aussiana sensu auct. Japon., non 



A. Br. KuRAMAGOKE. Stems long-creeping, loosely leafy, 



0.5-0.7 mm. wide, or 5-6 mm. wide inclusive of the leaves; 

 branches short, 1-3 times forked, 3-5 cm. long, prostrate, with 

 ascending tips, densely leafy; leaves of the lower plane hori- 

 zontally spreading, flat, ovate, about 3 mm. long, about 2 mm. 

 wide, acute or acutish, rounded at base, entire, those of the up- 

 per plane appressed, 2-2.5 mm. long, short-acuminate, strongly 

 auriculate at base; fertile branchlets slender, scarcely more than 



1 mm. across, 4-angled, the bracts deltoid-lanceolate, suberect, 

 about 1.3 mm. long, gradually acuminate, entire or obsoletely 



denticulate. July-Oct. Damp woods in hills and lowlands; 



Honshu, Shikoku, Kyushu; rather common. The typical 



variety occurs in Formosa, China, and Malaysia. 

 Selaginella uncinata (Desv.) Spring. Lycopodium unci- 



natum Desv. Konteri-kuramagoke. Leaves iridescent, 



diose of the upper plane cuspidate. Frequently cultivated in 

 greenhouses. China. 



8. Selaginella nipponica Fr. & Sav. S. savatieri Bak.; S. 



hachijoensis Nakai Tachi-kuramagoke. Delicate herb; 



stems weak, appressed-creeping, densely leafy, 4-6 mm. wide; 

 leaves of lower plane broadly ovate, 2-2.5 mm. long, spreading 

 or slightly recurved, acute, slightly unequal, obsoletely ciliate, 

 rounded on upper margin near base, those of the upper plane 

 narrowly ovate, about 1 mm. long, cuspidate, denticulate; fer- 

 tile branches 5-10 cm. long, erect, scapiform, simple to sparsely 

 branched, the bracts abruptly acuminate; leaves on fertile 

 branches all alike or slighdy dimorphic, more densely disposed 



than on sterile branches, ovate; sporangia in axils. May-July. 



Damp shaded places in lowlands and hills; Honshu (Kanto 



Distr. and westw.), Shikoku, Kyushu; common. ^Korea and 



China. 



9. Selaginella helvetica (L.) Link. Lycopodium helve- 



ticum L.; S. mariesii Bak. Ezo-no-hime-kuramagoke. 



Delicate herb; stems and branches short, 2.5-3.5 mm. wide, 

 appressed to the ground, forming a loose mat; leaves of lower 

 plane spreading to slighdy deflexed, oblong to ovate-oblong, 

 1.2-1.7 mm. long, about 1 mm. wide, obtuse to subacute, 

 loosely ciliolate, pale green, shghtly dilated on upper margin 

 at base, those of upper plane narrowly ovate, obtuse to sub- 

 acute, about 1 mm. long, ascending; fertile branches erect, sim- 

 ple or once forked, scapiform, 4-8 cm. long, the leaves all alike, 

 ovate, 1.2-1.5 mm. long, acute, ciliolate, pale yellow-green, 

 ascending, rather loosely disposed; spikes slender, solitary or 

 in pairs, 1-3 cm. long, the bracts membranous, similar to the 



leaves of the scape, obliquely spreading. July-Aug. Alpine 



slopes; Hokkaido, Honshu, Kyushu; rare. s. Kuriles, Korea, 



China, Siberia to Asia Minor, Europe. 



10. Selaginella heterostacliys Bak. S. recurvijolia 



Warb.; S. integerrima sensu auct. Japon., non Spring 



Hime-tachi-kuramagoke. Closely resembling No. 8 in 

 habit, but differing in the more numerous sterile leaves of the 

 upper plane, more rounded at base, the keeled bracts dimor- 

 phic, strongly differing from the leaves on the fertile branches, 

 and the more numerous somewhat flattened spikes; leaves of 

 lower plane on branches and stems ovate, 2-3 mm. long, ob- 

 tusish to acute, oblique at base, white-margined, those of up- 

 per plane narrowly deltoid-ovate, rounded at base, nearly equi- 

 lateral; spikes 7-25 mm. long, 1.5-3 mm. wide, dorsiventral, 

 the bracts of two forms, many, dense, the longer ones deltoid- 

 lanceolate, ciliolate, acuminate, keeled, the smaller ones slightly 



keeled. July-Oct. Honshu (Izu Isls., Kinki Distr. and 



westw.), Shikoku, Kyushu. Ryukyus, Formosa, China, and 



Indochina. 



11. Selaginella boninensis Bak. S. longicauda Warb.; 

 S. somae Hayata Hibagoke. Stems long-creeping, pros- 

 trate, slender, loosely leafy, 7-8 mm. wide inclusive of the 

 leaves, the branches creeping, simple to thrice forked; leaves 

 of the lower plane membranous, narrowly oblong-ovate, 3-4 

 mm. long, acute, cordate at base, horizontally spreading, green, 

 toothed, those of the upper plane ovate, 2-2.5 mm. long, cus- 



