CYPERACE^E. 103 



p 



appendiee depresso-conico-globosa 6 cm. loiiga 19-20 cm. lata ad summum rotundata 

 atro-purpurea cava hac atque iliac grosse rugosa vel laevi toto minute tenuissime 

 verrucosa. Fl. J : densissirne dispositi, stamine 1 ; anthera sessilis transverse 

 insita lineari-rectaiigulari flavescens 4-5 mm. longa 2-3 mm. lata apice trun- 

 cata Isevis, loculis adnatis linearibus crassis. Fl. f : pistillum densiuscule dis- 

 positum transverse insitum. Ovarium valde depresso-globosum glabrum leviter 

 purpurasceiis 3 mm. longum 5 mm. latum Iseve 3-loculare, parietibus crassissimis, 

 loculis parvis, ovulis solitariis loculum complete occupantibus ; stylo colnmnari 

 1 cm. longo glabro leviter purpurascenti, stigmate terminali 3-lobato cineraceo. 



HAB. Tainancho : Kareikosho, Takunaiisha, leg. S. YUKI, Mai. 1914, fl. 



Near Amorphophalliis oampanulatus BLUME (ExGL. Arac. in ENGL. 

 Nat. Pfl.-fam. 11-3, p. 127, fig. 81). 



Cyperaceae. 

 Cyperus I^INX. 



Key to the Formosan Species. 



(Principally following to C. B. CLARKE in HOOK. f. Fl. Brit. 

 Ind. VI. pp. 597-619). 



I. Inflorescence umbellate throughout or capitate ; spikelets digitate or 

 clustered, not spicate. Style-branches linear, rarely linear-lanceolate. 



Very small slender annual, umbels nearly head-like, very rarely reduced 

 to a single head. Spikelets small. Glumes mucronate . . . . C. uncinatus. 



Small or middle-sized, annuals or perennials ; rhozome 0, or in C. Haspan 

 creeping. Leaves and branches moderately long, narrow, weak. In- 

 florescence umbellate. Glumes scarcely cuspidate. 



Nut pale brown subequally trigonous ................ C difformis. 



Nut pale brown ovoid ^ length of obtuse glume ...... C. Haspan. 



Nut marble-white plano-convex (plane face against rhachilla) ...... 



C. flavidus. 



Tall perennial with green somewhat broad (broadest in the genus) often 

 3-nerved leaves. Umbels compound . . . ................. C. diffusus. 



II. Inflorescence umbellate ; spikes often more or less corynibed ; spikelets 

 (sometimes very shortly) spicate. Style-branches linear. 



