414 The 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 glabra as food for hogs. 



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

 haps Quercibs Ilex, transferred to Quercus Priniis. 



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

 to the shape of the leaves of Viburnum pruidfolium. 



Prunus — L. (plum-tree) fr. the Gr. Trpviwj, the conunon name for the plum 

 tree. 



Pseudoacacia — L. (false- acacia) fr. the Gr. ipevdog, a falsehood, and aKUKia, 

 the acacia, a thorn tree of Egj'pt; referring to the similarity of the genus 

 Acacia to Rohinia Pseudoacacia. 



Ptelea — L. L. fr. the Gr. nre'/Ia, the elm, from wrfpov, wing ; referring to the 

 winged fruit of the elm, and Ptelea. 



pubescens — -L. (having hair) fr. jmbescei-e, to grow hair; referring to the 

 hairy organs of several species. 



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

 purea. 



Pyrus — ^ L. (the pear). The L. common name for the pear. 



Quercus — 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 Ulmus racemosa. 



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

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



Rhamnus — L. L. (the buckthorn) fr. the Gr. pa/xvoc^ the common name of the 

 genus. 



Rhododendron — L. fr. the Gr. /)0(loi>, a rose, and divSpor^ a tree; referring to 

 the showy flowers of the genus. 



Rhus — -L. (the sunlach) fr. the Gr. /.«)•(•, from piu^ to flow, the common name 

 of the genus. 



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

 riglda. 



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

 who 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. rubere, to be red; referring to the color of the 

 f(jliiige or cones of Pieea rubens (rubra). 



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

 other species. 



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



saccharinum — L. a. (sweet) fr. saecharum, sugar; referring to the sweet sap 

 of Acer saceharinuni. 



saecharum — L. (sweet or sugar) fr. the Hkt. garkara through the Gr. 

 acLKxapor; referring to the sweet sap of Acer saecharum. 



Salix — • L. (willow) fr. the common name of the willow. 



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

 mcut, througli the Gr. aafiiSvKr/ and <pu?.hjv, leaf; referring to the elder-like 

 leaves of Fraxinus nigra. 



Sassafras — Ij. L. j)erliaps from the early Indian name. 



sativa — L. (iiertiiining 1o i)lantiiig) ; referring to the seeds of Castanea 

 dinh Id. 



serotina — ^ L. (tli;it which ripens late); referring to the late flowering of 

 Prunus serothio. 



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



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

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



sphaeroide?. — ^ L. (spherical) fr. the Gr. c<paipa^ sphere, and aides, like; refer- 

 ring to the globular cones of Chamaevypcris thyoides. 



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

 the steeple-like inflorescences of Acer spicatum. 



