GENERAL KEY 5) 
Leaves normal, but not evergreen. 
Foliage punctate, with a strong odor; trees or 
shrubs. Rutacee. 
Foliage not punctate. 
Herbs. 
Ovary not enclosed in a hypanthium. 
Carpels free at the top. Saxifragacez. 
Carpels united to the top of the ovary. 
Sepals and petals four each, stamens six, 
tetradynamous. Crucifere. 
Sepals and petals five each, capsule sev- 
eral- (often five-) celled. 
GERANIALES. 
Ovary enclosed in a hypanthium. Lythracee. 
Trees, shrubs or woody vines. 
CELASTRALES. 
Petals more or less united. 
Petals attached to each other, but not truly gamopetalous. 
Without latex; stipules present; fruit a legume. 
Leguminose. 
With latex; stipules wanting. 
Leaves compound or dissected. Fumariacee. 
Leaves simple, entire. Poly galacez. 
Petals united from the base into a single piece, truly gamo- 
petalous. 
Stamens free from corolla, more numerous than its lobes. 
ERICALES. 
Stamen filaments attached to the corolla. 
Corolla regular cr nearly so. (Some Lamiales and Ver- 
bascum have nearly regular corollas.) 
Carpels two, distinct or only partly united; ovary not 
compound; seeds with coma; plants with milky 
juice (latex). GENTIANALES. 
Carpels united into a compound ovary. 
Corolla four-lobed, scarious, stamens four; acaules- 
cent plants with ribbed leaves. Plantaginacee. 
Corolla five-lobed, stamens usually five. 
Stamens attached to middle of the corolla lobes, 
i. €., opposite to the lobes. Primulacez. 
Stamens attached between the corolla lobes, i. e., 
alternate with the lobes. 
Ovary one-celled. 
Plants glabrous, leaves entire. Gentianacee. 
Plants not glabrous, leaves not entire. 
Hydrophyllacez. 
Ovary two to five-celled. (Four-lobed in the 
* Boraginacez.) POLEMONIALES. 
Corolla irregular, fertile stamens two or four (five in Ver- 
bascum), often in two unequal pairs. (Corolla nearly 
regular in some Lamiales.) 
Fruits one to four-seeded, usually separating into one- 
seeded nutlets or achenes. LAMIALES. 
Fruits, six to many-seeded capsules. 
SCROPHULARIALES. 
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