Cyperaceae 



235 



stipe, spreading to reflexed wlien mature, broadly lanceolate, 

 slightly compressed, nerveless, moderately long beaked; stigmas 



3, slender. July-Aug. Alpine slopes; Hokkaido, Honshu 



(n. and centr. distr.). Europe, Siberia, and N. America. 



76. Carex siroumensis Koidz. Takane-naruko. 

 Culms slender, densely tufted, nodding above, 20-30 cm. 

 long; leaf-blades 1-2.5 mm. wide, folded, the basal sheaths 

 dark brown, sparsely fibrous; spikes 3 or 4, densely flowered, 

 contiguous except the rather long-peduncled lowest one, the 

 terminal gynecandrous and obovate or staminate and linear, 

 1-1.5 cm. long, the others pistillate, oblong-clavate, 1-2 cm. 

 long, dark brown, subsessile, the lower bracts brisdeform, 

 sheathing at base; pistillate scales oblong-ovate, dark brown, 

 acute; perigj'nia nearly twice as long as the scales, 5-6 mm. 

 long, broadly lanceolate, membranous, compressed-trigonous, 

 frequently brown-flecked, very faintly nerved, sparsely setulose- 

 scabrous, with appressed to ascending short hairs, gradually 

 tapering at both ends, short-beaked, with a hyaline, shallowly 



2-toothed rip; stigmas 3. July-Aug. Dry rocky places in 



alpine regions; Honshu (centr. distr.); rare. n. Korea. 



77. Carex hakkodensis Franch. Ito-kin-suge. Rhi- 

 zomes loosely tufted, with short ascending innovations; culms 

 densely matted, 10-50 cm. long, slender, acutely angled, very 

 scabrous; leaf-blades flat, rather thin and soft, 1.5-3 mm. wide, 

 the basal sheaths membranous, not fibrous, pale; spike solitary, 

 terminal, usually androgynous, rarely monoecious, usually ob- 

 long to narrowly so, the staminate part very short; pistillate 

 scales oblong, castaneous, emarginate, the green midrib ex- 

 current as a mucro; perigynia 6-8 mm. long including the 

 stipe, nearly twice as long as the scales, suberect, moderately 

 compressed, tawny, faintly or obsoletely nerved, lustrous, the 

 beak very shallowly 2-toothed, with a hyaline tip; stigmas 3. 



July-Aug. Wet alpine slopes; Hokkaido, Honshu (n. 



and centr. distr.) ; rather rare. Kuriles. 



78. Carex stenantha Fr. & Sav. var. stenantha. C. 



stenantha var. yatsttgatakensis Akiyama Iwa-suge. Plant 



loosely mfted, with short ascending innovations; culms 

 slender, 15^0 cm. long, glabrous, 3-angled, nodding above; 

 leaf-blades rather short, flat, 2-3 mm. wide, the basal sheaths 

 partially dark red; spikes 3-5, distant, sparsely flowered, the 

 lower ones often very long, on filiform peduncles, the terminal 

 staminate, linear, 2-3 cm. long, the lateral pistillate, narrowly 

 cylindric, long-peduncled, pendulous, dark reddish brown, 

 2-3 cm. long, the bracts bristleform, long-sheathing at base; 

 pistillate scales oblong, rounded at apex, dark brown; perigynia 

 longer than the scales, 6-8 mm. long, erect, membranous, 

 lustrous, compressed-trigonous, disdncriy but slenderly nerved, 

 stramineous and often fuscous in upper part, slightly pubescent 

 especially along the margins, short-stipitate, gradually long- 

 beaked, with an obliquely truncate, hyaline tip; stigmas 3. 



July-Aug. Rocky and gravelly places in alpine regions; Hon- 

 shu (n. and centr. distr.); common. 



Var. daisetsuensis Akiyama. C. ktausipalii Meinsh.; C. 



stenantha sensu auct. Hokkaido, non Fr. & Sav. Taisetsu- 



iwA-suGE. Differs in the broader, oblong-lanceolate pe- 

 rigynia with a shorter beak. .Mpine regions; Hokkaido. 



Kuriles and Sakhalin (Mt. Ktausipal). 



79. Carex makinoensis Franch. Iw.\-kan-suge. Rhi- 

 zomes densely tufted, the neck densely covered with dark 

 brown comose fibrous remains of old leaf -sheaths; culms 30-50 

 cm. long, slightly scabrous above; leaf-blades 2-3 mm. wide, 



stiff; spikes 3-5, approximate except the lowest, the terminal 

 staminate, narrowly linear, 4-10 cm. long, the lateral pistillate, 

 cylindric or short-cylindric, 2-4 cm. long, erect, the bracts 

 long-sheathing at base; staminate scales dark chestnut-brown, 

 minutely ciliate; pistillate scales yellowish-golden, ovate, acute; 

 perigynia longer than the scales, 4-6 mm. long, nearly erect, 

 oblong-fusiform, compressed-trigonous, membranous, stra- 

 mineous, sparsely hairy, nerves slender, the beak acutely 



2-toothed; stigmas 3. Apr.-May. Mountains; Shikoku, 



Kyushu. Ryukyus and Formosa. 



79a. Carex phaeodon T. Koyama. Hashi-naga-kan- 

 suGE. Perennial; rhizomes loosely tufted, long-creeping; 



leaves linear, plicate, 3-6 mm. wide, to 25 cm. long, rather 

 rigid; basal sheaths short-bladed, light purple-brown to red- 

 brown; culms 20-30 cm. long, smooth; spikelets 3-6, the 

 terminal staminate, linear-clavate, brownish, 2-3 cm. long, the 

 lateral pistillate or sometimes androgynous, oblong-cylindrical, 

 10-25 mm. long, about 7 mm. wide, densely many-flowered, 

 peduncled, with sheathing bracts; pistillate scales oblong- 

 elliptic to oblong-ovate, pale with brownish margins; perigynia 

 erect-spreading, oblanceolate or linear-oblong, 4.8-5.3 mm. 

 long, trigonous, smooth, thinly membranous, nearly nerve- 

 less except for lateral 2 keels, the beak long, with a bidentate 



moutli; achenes tightly inclosed; stigmas 3. Wet rocks 



along streams; Honshu (Suruga Prov.) ; rare. 



80. Carex chrysolepis Fr. & Sav. var. chrysolepis. C. 

 picea var. asensis Lev. & Van't.; C. odontostoma var. variegata 

 Kuekenth.; C. \iusiuana Ohwi Ko-iwa-kan-suge. Rhi- 

 zomes densely tufted; culms 15-30 cm. long, obtusely angled, 

 nearly glabrous; leaf-blades flat, 1.5-3 mm. wide, the basal 

 sheaths pale brown, fibrous when withered; spikes 3 or 4, ap- 

 proximate, the terminal staminate, linear-clavate, 1.5-3 cm. 

 long, golden-brown, the others pistillate, slenderly oblong, 

 erect, 8-20 mm. long, the lower ones usually peduncled, the 

 lowest bract short, sheathing at base; pistillate scales narrow- 

 ovate, golden-caitaneous, truncate and mucronate; perigynia 

 4-5 mm. long, nearly erect, oblong to somewhat fusiform, 

 membranous, light yellow-green, inconspicuously nerved, 

 sparsely appressed-hispidulous, abruptly to gradually rather 



long-beaked, witii a 2-toothed apex; stigmas 3. Apr.-June. 



High mountains; Shikoku, Kyushu. 



Var. odontostoma (Kuekenth.) Ohwi. C. odontostoma 



Kuekenth. Miyama-iwa-suge. Perigynia narrow, 6-7 



mm. long, the beak longer, 2-toothed. Kyushu. For- 

 mosa. 



Var. glabrior (Ohwi) Ohwi. C. odontostoma var. glabrior 



Ohwi; C. glabi-ior (Ohwi) Akiyama Kansai-iwa-suge. 



Perigynia extremely narrow, nearly linear, sparsely appressed- 

 hirsute only along the margins, the beak very long with a 



deeply 2-toothed apex. Rocky places in high mountains; 



Honshu (Yamato and Tajima Prov.) ; rare. 



81. Carex blepharicarpa Franch. var. blepharicarpa. 



C. hayatae Lev.; C. yezomontana Akiyama Shojo-suge. 



Rhizomes densely to somewhat loosely tufted, the neck densely 

 covered witii brown fibers; culms 10-50 cm. long, angled, 

 scabrous; leaf-blades rather stiff, 2-4 mm. wide, the basal 

 sheaths castaneous or brown; spikes 2-5, approximate or con- 

 tiguous, the lo«er ones distant or rarely the lowest radical, 

 the terminal staminate, clavate, 1-3 cm. long, the lateral 

 pistillate, oblong or oblong-cylindric, 1-3 cm. long, the bracts 

 short, loosely long-sheathing at base; pistillate scales obovate- 



