16. 
ILLINOIS NATURAL HISTORY SURVEY MANUAL 1 
KEY TO FAMILIES 
@rees or shrubs, erect... 52. oi. ee kc eb we 2 
Shrubs (vines) that ‘climb.... 2.0: 5... . 2. 1... See 17 
BEER se cor 19 
Bark and leaves spicy, aromatic. ... LAUREL FAMILY p. 118 
Bark and leaves not thus..............'. . .s..eeynee 3 
Flowers chocolate brown, 3-parted; fruits bananalike...... 
SSO Ee ae CUSTARD APPLE FAMILY p. 113 
i ts is oa en ee ee 4 
Leaves palmately 5-9-foliate. .SOAPBERRY FAMILY p. 190 
Leaves pinnately divided; sap milky...........¢/......0. 
Sr Ie erg a Son pe os CASHEW FAMILY p. 184 
Not Chai8. fos bo sis one oe a ah + PS cnet 5 
Flowers yellow, blooming in fall........................ 
RY TS ie ee WITCH-HAZEL FAMILY p. 144 
INot tiuse.. 5 os. es 2 be ee oe ee cts Deep 6 
Flowers 4-parted: )./: 6o25 6. 2. . 5s) eos a ee 7 
Flowers 5 or 6-parted.. 2.2... . 000.05. ee I 
fe) 
Flowers in catkins, pendant or erect.. ..BIRCH FAMILY p. 73 
Leaves alternate, simple.. DOGWOOD FAMILY in part p. 225 
Leaves alternate, compound, dotted with clear spots..... 
Rt ee Pec «al Se Ee Ge eee RUE FAMILY p. 178 
Leaves opposite... 2... 0. 0000.05 bo ee ee 8 
We Cel es ae BLADDER NUT FAMILY p. 189 
Leaves stmple.)...... 5:55:50 252. ss. es soe oo 9 
Flowers -dull purple...STAFF TREE FAMILY in part p. 187 
Flowers greenish, white or yellow, many in cluster...... 
AO Cane ay Sena eee DOGWOOD FAMILY in part p. 225 
Leaves Opposite sjo.:62. 0. aegaleo)o.e- wb sone 4 js0 a8 pie II 
Leaves alternate. 2.3 20). ow nce so» 2.8 ain et pe 12 
Flowers greenish yellow, solitary or few in cluster........ 
is SAE clea See STAFF TREE FAMILY in part p. 187 
Flowers white in dense clusters.......:.......si.908.0ue 
IS 4 aS hal HONEYSUCKLE FAMILY in part p. 321 
Flowers very small or small in lateral clusters............. 13 
Moet thus... 204... cae e ee es dda ee » alae 14 
eet aig erates i. ....7 & 2 .doe ek ees HOLLY FAMILY p. 186 
Petals more or less united... HEATH FAMILY in part p. 227 
Flowers. irregular, butterfly shaped.......... /:.4.eemaue 
RN ich. See Tie PULSE FAMILY in part p. 157 
Stamens very many; flowers conspicuous...............- 
re ta | ng Oat”, Alaa ROSE FAMILY p. 145 
Petals incurved.............. BUCKTHORN FAMILY p. 192 
Petals not incurved; flowers white....................-. 
i Raa naa SAXIFRAGE FAMILY in part p. 139 
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