ASTERACEAE HELIANTHEAE

 I-HELIANTHEAE

A-THE TRIBE AMBROSIACEAE CHANGE TO TRIBE HELIANTHEAE

II-IVA PLANT WITH HEAD WITH FLOWER OF BOTH SEXES SUBTENDED BY LEAVES

1-IVA ANNUA

2-IVA AXILLARIS

3-IVA FRUTESCENS

4-IVA IMBRICATA

III-CYCLACHAENA XANTHIFOLIA  PLANT WITH STAMINATE AND PISTILLATE FLOWER IN THE FLOWER HEAD ,NOT SUBTENDED BY LEAVES

IV-AMBROSIA PLANT WITH HEAD OF DIFFERENT SEX ,MONOICOUS INVOLUCRAL

                               BRACT OF STAMINATE HEAD UNITED

1-AMBROSIA ARTEMISIIFOLIA

2-AMBROSIA ACANTHICARPA

3-AMBROSIA BIDENTATA

4-AMBROSIA PSILOSTACHYA

AMBROSIA TOMENTOSA

V-XANTHIUM STAMINATE AND PISTILLATE HEAD SEPARATED INVOLUCRAL BRACT

                              OF STAMINATE HEAD SEPARATED

1-XANTHIUM SPINOSUM

2-XANTHIUM STRUMARIUM

VI- ACANTHOSPERMUM AUSTRALE  -OPPOSITE LEAVES  DISK FLOWER PERFECT

                                                                           STERILE

VII-SILPHIUM TALL HERBS  WHORLED OR ALTERNATE LEAVES  DISK FLOWER STERILE

1-SILPHIUM PERFOLIATUM-- LEAVES OPPOSITE

2-SILPHIUM INTEGRIFOLIUM - OPPOSITE ENTIRE LEAVES

3-SILPHIUM TRIFOLIATUM-WHORLED LEAVES

4-SILPHIUM ASTERISCUS- LEAVES ALTERNATE

5- SILPHIUM LACINIATUM LEAVES PINNATIFID ALTERNATE

6-SILPHIUM TEREBENTHINACEUM

7- SILPHIUM COMPOSITUM VAR RENIFORME- BASAL CORDATE LEAVES

VIII-BERLANDIERA  CANESCENT HERBS, ALTERNATE LEAVES  DISK FLOWER STERILE

1-BERLANDIERA TEXANA

2-BERLANDIERA  LYRATA

3-BERLANDIERA

IX-ENGELMANNIA RENISTERIA- ALTERNATE PINATIFID HIRSUTE HERBS DISK FLOWER 

                                                             STERILE

X- PARTHENIUM -CANESCENT HERB OR SHRUB, FEW WHITE  RAY FLOWER,DISK

                                               FLOWER STELIE

1-PARTHENIUM HISTEROPHORUS- PINNATIFID LEAVES

2-PARTHENIUM INTEGRIFOLIUM