254 rSKFUL PLANTS OB^ GUAM. 



the sterile ones elliptical or spathulate, blunt, the fertile ones longer and narrower; 

 texture coriaoeous; upper surface naked, lower thinly coated with whitish tornentum 

 in the sterile hut more densely in the fertile j)art beneath; veins hidden; suri small, 

 bright reddish brown, immersed, occupying the whole of the contracted upper part 

 of the frontl. 



This species is spread throughout the islands of the Pacific Ocean. It is also found 

 in India, Ceylon, and the Mascaren Isles. 

 References: 



Q/clophorus adnascens (Sw. ) Desv. Berl. Mag. v. 300 (ex Luerssen). 



P(,hjp(,(U>nn (Khiasrms Sw. Syn. Fil. 25, 222. tah. 2. j. 2. 1806. 



Cymbidium triste W illd. Same as Luma teretifolia. 



Cynodon dactylon Pers. Same as Capriola dactylon. 



Cyperaceae. Sedges. 



The following members of this family are known from Guam: Carex demifora, 

 Carex fuirenoides, Cladium gaudichaudii, Ci/perns difformiK, Cifperu,s pennaiua, Cf/perus 

 rotitndus, Eleorharis cnpitnta, FJeocharh pla)itagiiioi<Ira, Fi)nbrisli/lis comphinata, Fim- 

 hristi/lis diphiilla, Fi^nbridylls globulosa, Fiiiibri.sti/li.s mlUarea, Fimbridj/lia puberida, 

 Finibridi/Us spathacea, Fuireiia umbellata, Kijllinga monocephala, KyJUnga monocephala 

 sublricep.t, Kijnchospora corymbosa. 



Cyperus difFormis. 



Family Cyperaceae. 

 A glabrous annual sedge often growing in rice fields; stem 10 to 50 cm. high, acutely 

 3-angled at the top; leaves usually somewhat shorter than the stem; spikes arranged 

 in mnbelled heads, the umbel either simple, compound, or reduced to one head, the 

 rays up to 5 cm. long, sometimes longer; bracts 5 to 25 cm. long, lowest often sub- 

 erect (umbel lateral); spikes globose, 8 to 12 mm. in diameter; spikelets very small, 

 linear-oblong, most densely crowded; glumes close-packed, concave, very obtuse, 

 straw-colored, sides more or less red; stamens 1, rarely 2; anther small, oblong; nut 

 subsessile, subequally trigonous, pale brown; style shorter than the nut; stigmas 3, 

 linear, short. 



References: 



Cyperus difformis L. Cent. PI. 2: 6. 1756; Amoen. Acad. 4: 302. 1759. 



Cyperus hexastachyos. Same as Cyperus rotundus. 



Cyperus pennatus. 



A sedge collected in Guam by Gaudichaud, with compound umbels of cylin- 

 drical sessile spikes. Stems 60 to 90 cm. high; leaves longer than stem. 

 References: 



Cyperus pennatus Lam. 111. 1: 144. 1791. 



Mariscus albescens Gaudich. Bot. Freyc. Voy. 415. 1826. 



Cyperus rotundus. Nutgrass. 



Loc.\L N.\MEs. — Chaguan Humdtag (Guam); Mootha, Mutha (India); Hama- 

 sage (Japan). 

 A sedge growing in sandy places, with aromatic tuberous rootstock, having the 

 odor and taste of camphor. Very common in Guam, often growing in the yards of 

 Agafia with grasses and near the shore. It is a most troublesome weed in garden 

 patches. In Japan its roots are collected in the winter, dried, and used for medi- 

 cine. 



References: 



Cyperus rotundus L. Sp. PI. 1 : 45. 1753. 



Cypress vine. See Quamoclil quamodit. 



Cytisus cajan. Same as Cajan cajan. 



