Carex 



CYPERACEAE 



Carex 



Sheath of the infl. long (10-30 mm. long). 



Bracts of the spikes short-leaf -like 10. 



Bracts of the spikes brownish with hyaline margins 11 . 

 ff. Beak of the utricle usually long, notched or cleft, 

 g. Utricle glabrous. 



h. Fig. bracts herbaceous or chartaceous, not 

 hyaline (Tumideae). 

 Utricles ovoid, 2 mm. broad: rhizomes 

 caespitose. 

 Spikes 1-2 cm. long; utricles dark-colored 



at maturity 12. 



Spikes 3-5 cm. long; utricles green at 



maturity 13 . 



Utricles cylindric, 1mm. across: rhizomes 



stoloniferous 14. 



hh. Pistillate fig. bracts hyaline, long-aristate 15. 



gg. Utricle more or less pubescent. 



i. Culms with nodes and lvs. throughout 

 their length, or lvs. exceeding the 

 culms. 



Scale shorter than the utricle. 

 Scale of utricle ovate, with narrow 

 hyaline margin and short bristle- 

 tip 16. 



Scale of utricle lanceolate, hyaline, 



slenderly pointed 17 



Scale longer than the utricle, lanceo- 

 late, with broad hyaline margin 

 and long bristle-tip equal to or 



exceeding length of scale 18 



ii. Culms longer than the lvs. and leafless 

 above: scale of utricle broad-lanceo- 

 late, hyaline, with stout midrib ex- 

 tended into bristle tip half the length 

 of the scale 19 



C. foraminata 

 C. lanceolata 



C. brownii 

 var. transversa 



C. ichnostachya 



C. japonic a 

 var. chlorostachys 

 C. scabrifolia 



C. hebecarpa 

 var. ligulata 



C. idzuroei 



C. nemostacltys 



C. laticeps 



1. Carex brunnea Thunb. ]£]£ (Shu Ts'ao; Bunch Grass) (Mak. F. 794). Erect, 

 2-4 dm. high; fls. brown, IX; fr. brown, X. Eastern Asia to Australia; locally 

 in Che., Ki., Ku. Moist thickets. 



2. Carex fluviatilis Boott var. unisexualis (C.B. Clarke) Kukenth. (E.P. 38 (IV. 20): 

 144). Eastern and Central China; locally in Ki., Ku. 



3. Carex cernua Boott (H.F. 6: 708). Coarse, erect, 3-6 dm. high; fls. green, IV-V; 

 fr. brownish, V-VI. Southeastern Asia; locally in Che., Ku. Wet ground. 



4. Carex remota Linn. WW^ (Shu Tai Ts'ao; Book-mark Grass) (E.P. 38 (IV. 20): 

 233, f. 37G-H). Decumbent, grass-like, 2-4 dm. high; fls. greenish, VI; lowest 

 bract long, overtopping infl. North temperate regions; locally in An., Ku. 

 Woodland. 



5. Carex forsicula Franch. & Savat. var. melinacra (Franch.) Kukenth. (E.P. 38 

 (IV. 20): 342). Culms 30-60 cm. high. China, Korea, Japan; locally in An. 



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