Cyperaceae 



239 



Var. fulva (Ohwi) Ohwi. C. dterniflora var. ftilva Ohwi; 

 C. heribaiidiana Lev. & Van't., pro parte; C. artinux C. B. 



Clarke, pro parte Ki-ito-suge. Plant relatively low and 



small; culms usually 10-20 cm. long; spikes tawny, lustrous. 



Under shrubs in high mountains; Honshu (Ugo, Shimo- 



tsuke, Yechigo, Kaga, Shinano Prov. and elsewhere). 



Var. arimaensis (Ohwi) Ohwi. C. alterniflora var. arima- 



ensis Ohwi Arima-ito-suge. Plant stoloniferous, with 



short, green leaves; culms low; intermediate between var. 

 alterniflora and var. conicoides. Honshu (Kinki Distr.). 



Var. alterniflora (Franch.) Ohwi. C. alterniflora Franch.; 

 C. pseudostrigosa Lev. & Van't.; C. scahroanstata Akiyama 



O-iTO-suGE. Resembles var. sikpkjana; culms usually 



taller; pistillate spikes loosely flowered; scales and sheaths pale, 



not reddish. Woods in hills and mountains; Hokkaido, 



Honshu, Shikoku, Kyushu; rather abundant. Formosa. 



Var. elongatula (Ohwi) Ohwi. C. alterniflora. var. elong- 

 attila Ohwi Kuju-suge. Resembles the preceding vari- 

 ety; rhizomes loosely tufted; perig)'nia long-beaked. Kyu- 

 shu (Mount Kujii) ; rare. 



Var. sikokiana (Fr. & Sav.) Ohwi. C. si\o\iana Fr. & 



Sav.; C. tentiissima var. sikpl{iana (Fr. & Sav.) Kuekenth. 



Beni-ito-suge, Kansai-6-ito-suge, Shikoku-ito-suge. Culms 

 20-50 cm. long; leaf-blades about 2 mm. wide, the basal 

 sheaths entire, at least partially reddish; lateral spikes \5-A 

 cm. long; the bracts leaflike, slightly longer than the spikes; 



staminate and/or pistillate scales frequendy reddish. 



Woods on hillsides and in mountains; Honshu (Kinki Distr.), 

 Shikoku, K}TJshu, s. Korea. 



Var. aureobninnea (Ohwi) Ohwi. C. alterniflora var. 



aureobninnea Ohwi Cha-ito-suge. Basal leaf-sheaths 



yellowish brown, slightly lustrous. Apr.-May. Shikoku, 



Kyushu. 



101. Carex fernaldiana Lev. & Van't. C. mariesii C. B. 

 Clarke; C. iseline C. B. Clarke; C. tenuissima sensu auct. 

 Japon., non Boott Ito-suge. Closely related to the pre- 

 ceding species; rhizomes tufted; culms 15-30 cm. long, capil- 

 lary, smooth; leaf-blades 0.3-1 mm. wide, sometimes flattish, 

 at least the outer always filiform-involute, the sheaths stramin- 

 eous green; spikes 2 or 3, erect, the terminal staminate, linear, 

 often slighdy brownish, 1-L5 cm. long, the others pistillate, 

 short-cylindric, loosely few-flowered, 7-15 mm. long, on short 

 usually included peduncles, the lowest one sometimes slightly 

 e.xserted, the lowest bract somewhat leaflike, longer than the 

 spike, long-sheathing; perigynia 2.5-3.5 mm. long, glabrous. 



Apr.-June. Woods in hills and mountains; Hokkaido, 



Honshu, Shikoku, Kyushu; rather common. Formosa. 



102. Carex duvaliana Fr. & Sav. C. hololasius Lev. & 

 Van't.; C. tenuissima var. dtwaliana (Fr. & Sav.) Kuekenth. 



Ke-suge. Related to C. sachalinensis var. alterniflora; 



pilose throughout; rhizomes loosely tufted, creeping; culms 

 30-50 cm. long, pilose; leaf-blades 1.5-2.5 mm. wide, the basal 

 sheaths pale, entire; bracts leaflike, long-sheathing; perigynia 



3-3.5 mm. long, short-beaked. Apr.-May. Thickets in 



hills; Honshu (Kanto Distr. and westw.), Shikoku, Kyushu 

 (rare). 



103. Carex mayebarana Ohwi. Kf.-kusa-suge, Ke- 

 HiE-suGE. Rhizomes slender, creeping; culms 20-30 cm. 

 long, glabrous; leaf-blades soft, glabrous, flat, 2-3 mm. wide, 

 the basal sheaths pale; spikes 3 or 4, distant, the terminal 

 staminate, linear, 1-1.5 cm. long, sometimes with a few pistil- 

 late flowers intermixed, the others wholly pistillate, loosely 



few-flowered, 6-15 mm. long, broadly linear, the bracts leaf- 

 like, longer than the spikes, thinly pubescent, long-sheathing, 

 the peduncles mostiy included in the sheaths of the bracts; 

 pistillate scales narrowly oblong, pale, glabrous, mucronate; 

 perigynia slightly longer than the scales, about 6 mm. long, 

 erect, glabrous, light green, nerveless, the beak nearly as long 

 as the body, glabrous, minutely 2-toothed and hyaline at tip; 

 stigmas 3. Kyushu, Shikoku; rare. 



104. Carex tristachya Thunb. var. tristachya. C. mon- 



adelpha Boott Moegi-suge. Rhizomes densely tufted; 



culms erect, 20-40 cm. long; leaf-blades flat, stiffish, 3-5 mm. 

 wide, the sheaths pale, sphtring into hairlike brown fibers, 

 these covering the neck of the rhizome; spikes 3-5, contiguous, 

 fastigiate, the terminal staminate, filiform, 1-3 cm. long, the 

 lateral pistillate, erect, short-cylindric, 1-3 cm. long, the lowest 

 one sometimes remote from the others and long-peduncled, 

 the lowest bract bladed, sheathing at base; staminate scales 

 small; pistillate scales elliptic, pale green, entire or mucronate 

 at the apex, die midrib not reaching the margin; perigynia 

 twice as long as the scales, 3 mm. long, erect, rhomboid or 

 ovoid-fusLform, about 3 mm. long, puberulent, obtusely 3- 

 angled, many-nerved, the beak short, somewhat recurved, 



minutely 2-toothed; stigmas 3, short. Dry fields and rocky 



slopes in hills and in low mountains; Honshu (Kanto Distr. 



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



China. 



Var. pocilliformis (Boott) Kuekenth. C. pocilliformis 



Boott Koppu-moegi-suge. Staminate scales connate ven- 



trally, infundibuliform; perigynia sUghtiy smaller than in the 



typical phase. Honshu, Shikoku, Kyushu. Ryukyus, 



Formosa, and Malaysia. 



105. Carex daisenensis Nakai. Daisen-suge. Rhi- 

 zomes densely tufted, the neck rather densely covered with 

 dark brown fibers; culms 30-50 cm. long, slender; leaf-blades 

 4-6 mm. wide, flat, stiff; spikes 3 or 4, distant, erect, the termi- 

 nal staminate, linear, 2-2.5 cm. long, the lateral pistillate, 

 broadly linear, loosely flowered, 1.5-2 cm. long, peduncled, the 

 bracts setaceous, sheathing at base; pistillate scales obovate, pale 

 green, obtuse, the green midrib sometimes excurrent as a 

 mucro; perig)'nia longer than the scales, 3.5-4.5 mm. long, 

 oblong-fusiform, the beak moderately elongate, minutely 2- 



toothed. Apr.-June. Honshu (Kinki Distr. and westw., 



mainly on the Japan Sea side), Kyushu (n. distr.). 



106. Carex dolichostachya Hayata. C. multijolia 



Ohwi; C. foliosissima Franch., non F. Schmidt Miyama- 



kan-suge. Rhizomes sometimes short-creeping (forma stoloni- 

 jera Ohwi): culms many, 20-50 cm. long; leaves densely fasci- 

 cled, the blades 3-8 mm. wide, subcoriaceous to rather soft, 

 slighdy scabrous, flattened, the basal sheaths purplish brown or 

 reddish fuscous, more or less lustrous, scarcely fibrous; spikes 

 3-5, distant, the terminal staminate, linear, 2-4 cm. long, the 

 others pistillate, broadly linear, 1.5-3 cm. long, loosely many- 

 flowered, long-peduncled, the bracts long-sheathing, short- 

 setaceous; pistillate scales obovate, pale or tawny to purplish 

 brown, rounded or truncate at the apex and mucronate; peri- 

 gynia longer than the scales, erect, oblong or obovate-oblong, 

 nerved, 3-4 mm. long, usually sparsely pubescent, rather 

 abrupdy short-beaked, with a minutely 2-toothed, membranous 

 apex; stigmas 3. May— July. Woods in mountains; Hok- 

 kaido, Honshu, Shikoku, Kyushu; conimon and variable. 



Formosa. 



Var. imbecilUs Ohwi. Ao-MryAMA-KAN-sucE. Plant 



