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1.
AMARANTHÀCEAE
J. St. Hil. Expos. Fam. I : 204. 1805.
Herbs, some exotic genera low shrubs, with alternate or opposite simple
mostly entire thin leaves. Flowers small, green or white,
perfect, monoecious, polygamous, or diocious, bracteolate, variously
clustered, usually in terminal spikes or ancillary heads. Petals
none. Calyx herbacious ormembranous, 2-5 parted, or 5-cleft, the
segments distinct or somewhat united, equal, or the inner ones
smaller. Stamens 1-5, mostly opposite the calyx-segments,
hypogynous ; filaments distinct, united at the base, or into a tube ;
anthers 1-celled or 2-celled. Ovary ovoid or subglubose, 1-celled
; ovule solitary in the following genera, amphitropous (several in some
tropical genera) ; style short, elongated or none ; stigmas 1-3.
Fruit a utricle, curcumscissile, bursting irregularly or indehiscent,
1-seeded in our genera. Seed mostly smooth ; embryo annular ;
endosperm mealy, usually copious.
About 40 genera and 475 species, widely
dispersed, most abundant in warm regions.
Anthers 2-celled ; leaves alternate
Calyx
of the pistillate flowers wanting.
2. Acnida.
Anthers 1-celled ; leaves opposite
Flowers in
small ancillary clusters.
3. Cladothrix.
Flowers
variously spicate or paniculate.
Calyx
5-cleft ; filmanents united into a tube.
4. Froelichia.
Calyx 5-parted
; filaments united at the base.
5. Iresine. |
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Sources:
Nathanie1 L.
Britton amd Addison Lord Brown, An
Illustrated Flora of the Northern United States, Canada, and the
British Possessions from Newfoundland to the Parallel of the Southern
Boundary of Virginia, and from the Atlantic Ocean Westward to the 102d
Meridian, Charles
Scribner's Sons, 1913
Wisconsin State Herbarium, University of Wisconsin - Madison, WISFLORA:
Wisconsin
Vascular Plant Specie
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