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Hansen & Rahn | Family List

Gramineae A. L. Jussieu
        = Poaceae

woody plants, herbaceous plants

important diagnostics
spiny stems or leaves

African, Asian, Australian and Oceanian, European, North American, South American

leaf: position
alternate, distichous

leaf: nature
not compound

leaf: venation
pinnate or hardly visible in leaves or leaflets., invisible or leaves 1-nerved, longitudinal in leaves or leaflets

with entire margin, lobed or divided, dentate

leaf: glands/ligule
with a ligule

leaf: stipules

spike, compound, sympodial or monopodial

flower: sexuality
bisexual, unisexual

flower: symmetry
actinomorphic, zygomorphic or irregular

flower: receptacle

flower: disc

flower: perianth number
0, 2, 3

flower: perianth nature
perianth of similar segments

flower: sepal number
0, 2, 3

flower: sepal position
all free from one another

flower: sepal nature
sepals imbricate or contorted

flower: petal number

stamen: number
1, 2, 3, 4, 6

stamen: anthers
basifixed, opening by longitudinal slits, opening by apical pores

stamen: filaments
free from the corolla, not connate

pistil: style
styles more than 1, free, style 1, or styles more or less connate

pistil: carpel

pistil: ovary

pistil: ovule
1 in each loculus

carpels free from each other or carpel 1, ovules attached to the central axis or ventrally in apocarpae, ovules attached to the apex of the ovary, ovules attached to the base of the ovary

fruit: type
a nut, fleshy

fruit: seed
1 seed

seed: embryo

seed: endosperm
seeds with endosperm


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