﻿414 Tlie New York State College of Forestry 



populifolia — L. (poplar-leaf) fr. populus, poplar, and folium, leaf; referring 

 to the shape of the leaves of Betula populifolia. 



Populus — ^ L. (poplar) the L. common name for the genus. 



porcina — L. (pertaining to pigs) fr. porcus, a pig; referring to the use of 

 the fruit of Carya glohra as food for hogs. 



Prinus — L. f r. the Gr. TTplvog, the ancient name of some evergreen tree, per- 

 haps Quercu.s Ilex, transferred to Quereus Prinus. 



prunlfoUum — L. (plum-leaf) fr. Prunus, plum, and folium, leaf; referring 

 to the shape of the leaves of Viburnum prunifoUum. 



Prunus — L. (plum-tree) fr. the Gr. -pi'i'of, the common name for the plmn 

 tree. 



Pseudoacacia — L. (false-acacia) fr. the Gr. ^}ev6oq, a falsehood, and ahUKia, 

 the acacia, a thorn tree of Egypt; referring to the similarity of the genus 

 Acacia to Eohinia Psetuloacacia. 



Ptelea — L. L. fr. the Gr. Trre/Ja, the elm, from Trrtpor, wing; referring to the 

 winged fruit of the elm, and Ptelec. 



pubescens — ■ L. (ha\'ing hair) fr. pubescere, to gTow hair; referriaig to the 

 hairy organs of several species. 



purpurea — L. (purple) ; referring to the color of the branches of Salix pur- 

 purea. 



Pjnrtis — L. (the pear). The L. common name for the pear. 



Quereus — L. (oak) fr. the L. common name of the genus. 



racemosa — L. (full of clusters) fr. racemus, clusters and -osus, full of; 

 referring to the racemose fruit of JJlmus racemosa. 



resinosa — L. (full of resin) fr. the Gr. pmivri, resin, and -osus. full of; refer- 

 jiiig to the resinous quality of the wood and bark of Pinus resinosa. 



Rhamnus — L. L. (the buckthorn) fr. the Gr. iMjivoq, the common name of the 

 genus. 



Rhododendron — L. fr. the Gr. JMov, a rose, and divdpov^ a tree; referring to 

 the showy flowers of the genus. 



Rhus — -L. (the sumach) fr. the Gr. fmvc, from ptu^ to flow, the common name 

 of the genus. 



rigida — L. (stiff) fr. rigere, to be stiff; referring to the rigid habit of Pinus 

 ri(/i(la. 



Roblnia — L. for the surname of John Robin, herbalist to Henry IV, of Fr., 

 wlu) was first to cultivate the tree in Europe. 



rostrata — L. (beaked) fr. rodere to gnaw, through rostrum, the beak of a 

 shi]>; referring to the long attenuate fruit of Salix rostrata. 



rubens — L. (reddish) fr. rubers, to be red; referring to the color of the 

 foliage or cones of Pi^ea rubens (rubra). 



rubra — L. (red); referring to the color of the wood of Quercu-s rubra, and 

 other species. 



Russelliana — L. for the surname Russell. A synonym for Salix fragilis. 



saccharinum — ^ L. a. (sweet) fr. saccharum. sugar; referring to the sweet sap 

 of Acer saccharinum. 



saccharum — L. (sweet or sugar) fr. the Skt. Qarkara llirough the Gr. 

 aaK\aiior: referring to the sweet sap of Acer saccJtannn. 



Salix — L. (willow) fr. the coninu)n name of the \\'illow. 



sambucifolia — L. (elderberry-leaf) fr. the Semetic sabbka, a musical instru- 

 ment, through the Gr. aafi^'vKii and <pv'/./.(n', leaf; referring to the elder-like 

 leaves of Fraxinus nigra. 



Sassafras — L. L. perhaps from the early Indian name. 



sativa — L. (pertaining to planting); referring to the seeds of Castanea 

 liiiiUJa. 



serotina— L. (that which ripens late); referring to the late flowering of 

 PriDius scroti IK. 



Sorbus — L. (the service tree) given as a generic name for the Mountain Ash. 



speciosa — L. (ornamental) fr. specerc, to observe, through species, appear- 

 ance, and -osus. full of ; referring to the showy flowers of Catalpa speciosa. 



sphaeroidea — L. (spherical) fr. the Gr. cc^atpa, sphere, and aides, like; refer- 

 ring to the globular cones of Chamaecypcris thyoides. 



spicatum — L. (shape-pointed) fr. spica, a spine or ear of corn; referring to 

 the steeple-like inflorescences of Acer spicatum. 



