454 A TEXT-BOOK OF BOTANY. 



Opulus. Ancient Latin name of a kind of maple. 



Opuntia. Prickly pear. Ancient Greek name of a plant, perhaps from 



'0-oi'f, a town in Locris. 



Orientalis'-e. Pertaining to the Orient or East. 

 Origanum. Wild marjoram. The ancient Greek name. Probably from 



bpot, mountain, + -ydvo<; } brightness, joy. 

 Ornus. Wild mountain ash. The classical Latin word. Perhaps from 



Gr. 6/wf, mountain. 

 Osmunda. Flowering fern. From Osmunder, Saxon name of the Celtic 



divinity, Thor. 



Ostrya. Hop hornbeam. Ironwood. The ancient classical name. 

 Oxalis. Wood sorrel. Ancient classical name ; from Gr. o^V, sour. 

 Oxycedrus. Prickly cedar. Ancient Greek name ; from 6rc, sharp, -)- 



/cff^pof, cedar. Cedar with pointed leaves. 

 Pseonia. Peony. The ancient Greek name. From Haiui', physician to the 



gods. 



Palmatus-a-um. Pertaining to a palm, like a palm. From Lat. palm-a, a palm. 

 Palustris-e. Fenny, marshy, swampy. From Lat. pains, a marsh. 

 Panax. Ginseng. Greek name of a plant. From TTOC, all, -f- OKOC, a cure ; 



all-healing, panacea. 

 Paniculatus-a-um. Having panicles. From Lat. panicula, a tuft or 



panicle. 



Panicum. Panic grass. Ancient Latin name of Italian panic grass. 

 Papaver. Poppy. The classical Latin name. 



Papyrifer-a-um. Producing papyrus. Lat. papyrus, -)- fcro, to bear. 

 Parvifforus-a-um. Having small flowers. Lat. parvus, small, + flos, a 



flower. 

 Passiflora. Passion flower. Adaptation of the Latin flos passionis, flower 



of passion. From a supposed resemblance of the parts of the flower 



to the implements of the crucifixion. 

 Pauciflorus-a-um. Having few flowers. Lat. paucus, few, -f flos, a 



flower. 

 r:;ullinia. Guarana. Named for C. F. Paullini, a German botanist (1643- 



1712). 



Pedatus-a-um. Having pedates or lobes. Lat. pcdo, to supply with feet. 

 Peltatus-a-um. Peltate or shield-like. Lat. pclta, a shield. 

 Pcnnatifolius-a-um. Feathered, winged. Lat. pcnnatus, winged, -~ folium, 



leaf. 



Pcnthorum. Ditch stonecrop. From Gr. Trt-vrt-, five, + o/>of, a rule; refer- 

 ring to the quinary order of the flower. 



Pepo. Pumpkin. Melon. The ancient Latin word. 



Pereine. Of Pereira. Named in honor of Jonathan Pereira, an Eng- 

 lish pharmacologist, who visited South America (1804-1853). 



Perfoliutus-a-um. Perfoliate. Stem apparently passing through the leaves. 

 Lat. per, through, + folium, leaf. 



