388 USEFUL I'LANTS OK (SUAM. 



I'ap^iult'S vaiiiildc, tiirl>iii;itt'-<li<lyiiii>iis ur lu'inisplu'ric, tt'ri-tc or 4-ril)lt('(l, iiu'inbra- 

 noii8; cruwii usually i-xci't'dini; tlu' calyx teeth, Icjcnlicidal at tin,' top, inaiiy-iseeiU'il; 

 seeds subjilobosi', testii<leei)ly coarsely pitteil. 



A variable jilaiit (ifti'ii haviiitr the hal)it of chickweed. (ir(>\vin<r in waste places 

 on the island of (Uiani. Wi<U'ly spread thronghont tlie Pacific islands, the Philip- 

 pines, China, and tlu'East Indies. The allieil ()hlei)huidia vmhrllahi L., which grows 

 in India, lioth wild and cultivated, is tiu' source of thechaya root, which with alum 

 yields a beautiful re<l dye. 

 Rekerexck.s: 



Oldcnlandia jKniicitluta !.. Sp. PI. ed. 2. 2: lt)<)7. 1763. 

 Oleaceae. The Oi.ivk kamii.v. 



This family is represented in (iuani \>y .huwiinum marianum and the cultivated 

 Jiismluinn nfficirudi' and ./. m^nlxic 



Oleander. See Xcriunt oleander. 

 Olena (Hawaii). See Curcuma lour/a. 

 Onion. See Allium cepa and Gardenn. 



Operculina peltata. Shield-leavkd morning-gloky. 



Family Convolvulaceae. 



Local names. — Lagun (Guam); Wa bula (Fiji). 

 A dindnng plant with long, tough, woody stem, large dark-green leaves, and 

 milky juice. Glabrous or the veins of the leaves hairy beneath; leaves broadly 

 ovate, shortly acuminute, more or less peltate, or the upper ones cordate with a nar- 

 row sinus, lo to 25 cm. long; flowers large, usually white (they have also been 

 described as purplish and sulphur-colored), in loose cymes on a common peduncle 

 usually shorter than the petiole; sepals broad, obtuse, coriaceous, nearly equal, 

 about 18 mm. long when in flowei', larger when in fruit; corolla broadly campanu- 

 late, at least 5 cm. long; anthers large. 



Common in Guam in rocky places along the coast, especially on Orote peninsula, 

 and Apapa Island in the harbor of San Luis de Apia, spreadijig over bushes and 

 covering the rocks with its dark-green foliage. The species is foinid in Tahiti, Fiji, 

 Java, Amboina, and the islands on the east coast of tropical Africa. 

 Eeferexces: 



Operculirui peltata (L.) Hallier f. Engler's Bot. Jahrl). 16: 549. 1892. 



Cnurolndui^pi'ltnlnxL. Sp. PI. 2:1194.1753. 



Tpdinota jtcltala Choisy, Meui. Soc. Phys. Genev. 6: 452. 1833. 



Ophioglossales. See Fern-allies. 



Ophiog-lossum. pendulum. Same as Ophioderma pendula. See Fern-allies. 

 Opo, opu (Philippines). See Lagenaria lagenaria. 

 Opoponax (Southern United States). See Acacia famesiana. 



Opuntia sp. Prickly tear. 



Familv Cactaceae. 

 Local names. — Lengua de vaca (Spanish, meaning "cow's tongue"). 



A plant pro) )ably introduced from Mexico. Flowers yellow; fruit sweetish; not 

 common on the island. The natives do not care for the fruit. 

 Oramai (Ponape). See Boehnieria tenacissima. 

 Orange. See <'itrus aurantium. 

 Orange-berry. See Triphasia tri/n/lnla. 

 Orchidaceae. Orchid family. 



The following species of orchids have thus far been collected in Guam: Nerrilia 

 aragodiia (iandich. { Pogimin jUdielUforinis Lindl.) ; Lnisln fi'retifoli<( <rau<lii'h. (Epide)i- 

 druin triste Forst. ); laeniopliylluiu fmciola (Forst. ) Reichenb. [Wuidla J'asciula 



