Dicotyledones
KEY TO FAMILIES
Key
93
Anthers one-celled, splitting longitudinally, lvs grasslike, or if not then tough with prominent longitudinal veins
KEY TO GENERA
Key
56A
Sepals and petals 4, ovules in 1 series
Sepals and petals 5, ovules in 2 series
110A
Lvs with watery papillae; utricle transverse to bracts
Lvs glab. or with soft hairs; utricle || bracts
112
Branchlets jointed and swollen at nodes, lvs ovate-cordate, plant perfectly glab. shrub with fleshy catkins
134
Capitula in large scented panicles; phyllaries in one series, scarious, ray florets with ligules very short, sts 2-lipped
Capitula not in panicles, scentless; phyllaries not as above; female florets tubular or absent or with long ligules
139
Calyx saucer-shaped with rim entire or irregularly shallowly lobed; lvs glaucous below
139A
Corolla > calyx, petals united at base only
Corolla < calyx, wholly or almost wholly tubular
199
Lvs completely clothed in appressed silvery tomentum; capitula in dense glomerules surrounded by white, felt-like, conspicuous floral lvs; pappus hairs flattened
Lvs oblanceolate, sessile and auriculate at base, much larger; fls in hemispherical receptacles
226A
Ovary 3-4-celled, fr. hollowed at apex
Ovary 2-celled, fr. not hollowed at apex
Stipules fused, forming a scarious sheath around the stem; fr. a nut enclosed in the persistent per.
252
Lvs densely tufted; fr. a valvate capsule with free-basal placenta bearing many seeds
Corolla tube very long and slender; ovules 1 per locule; anthers free, erect