254 USEFUL PLANTS OF GUAM. 



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

 texture coriaceous; upper surface naked, lower thinly coated with whitish tomentum 

 in the sterile but more densely in the fertile part beneath; veins hidden; sori small, 

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

 of the frond. 



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

 in India, Ceylon, and the Mascaren Isles. 

 Refekenxes: 



CyclophoTus adnascens (Sw. ) Desv. Berl. Mag. v. 300 (ex Luersaen). 



Polypodium adnascens Sw. Syn. Fil. 25, 222. tab. 2. f. 3. 1806. 

 Cymbidium triste Willd. Same as Luisia teretifolia. 

 Cynodon dactylon Pers. Same as Capriola dactylon. 



Cyperaceae. Sedges. 



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

 Carex fiiirenoides, Cladium gaudichaudii, Cyperus difformis, Cyperus pennalux, Cyperus 

 rotundus, Eleocharis capUata, Eleocharis plantaginoidea, Flmbrislylis complanata, Pim- 

 bristylis dipkyUa, Fimbristylis globulosa, FimbriMylis mUiacea, Fimbristylis pubenda, 

 FimbrislyUs spathacea, Fuireita umbellata, Kyllinga monocephaia, Kyllinga monocephala 

 subtriceps, Eynchospora corymbosa. 

 Cyperus dififormis. 

 Family Cyperaceae. 



A glabrous annual sedge often grow^ing 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 umbelled head.?, 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 liexastacliyos. Same as Oypenis 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 pennaius Lam. 111. 1: 144. 1791. 



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



Cyperus rotundus. NnTGR.\ss. 



IiOC.\L NAMES. — 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 

 Agana 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 rotundvs L. Sp. PI. 1 : 45. 1753. 



Cypress vine. See Quamoclit quamodil. 



Cytisus cajan. Same as Cajan cajan. 



