ents 
ULMACEAE 
1. Leaves entire, glabrous, prominently 3-veined at base, 
very oblique at base, usually with insect galls; 
buds appressed to stem; fruit a dark green drupe...... Celtis 
1. Leaves serrate or dentate, pubescent or roughened 
on both surfaces (except U. pumila), moderately to 
slightly oblique at base, without insect galls; buds 
somewhat spreading; fruit a Samara......ccsececceeceee Ulmus 
Celtis occidentalis L. Hackberry, Sugarberry (L) 
Java Farm. Moderately abundant in old fields and along roadsides, 
especially those with oyster shell paving. Prefers calcareous soil. 
Ivy Neck. One station at old house, between entrance road and 
source of Scaffold Creek drainage. Hectare 4658. Higman 367, 370, 
46350473 «483563354773: 
Ulmus 
1. Leaves smooth, simply serrate, very slightly oblique 
at “base; “samaras-entirely glabrous dares. c tects oe oc os Uo pUMLLA 
1. Leaves rough or harsh above, doubly serrate, definitely 
oblique at base; samaras pubescent. 
2. Leaves slightly folded at the midrib, very harsh 
above, ciliate; buds and branchlets downy pubescent; 
samaras pubescent only in the center.............-. U. rubra 
2. Leaves flat, moderately scabrous above, glabrous; 
buds and branchlets glabrous or sparingly pilose; 
samaras pubescent only on the margins............-. U. americana 
Ulmus pumila L. 
(not in Britton & Brown) Dwarf Elm 
Ivy Neck. One station: edge of bank above Rhode River, just 
north of Sand Point. Hectare 4769. Associate species: Maclura 
pomifera, Liquidambar styraciflua. Higman 1074. 
U. rubra Muhl. Slippery Elm 
Java Farm. Infrequent near northeast corner and in vicinity of 
pier. Associate species: Fraxinus tomentosa, Ulmus americana, 
Celtis occidentalis. Higman 347, 391, 619, 771. 
