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Hansen & Rahn | Family List

Gramineae A. L. Jussieu
        = Poaceae

habit
woody plants, herbaceous plants

important diagnostics
spiny stems or leaves

distribution
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

margin
with entire margin, lobed or divided, dentate

leaf: glands/ligule
with a ligule

leaf: stipules
absent

inflorescence
spike, compound, sympodial or monopodial

flower: sexuality
bisexual, unisexual

flower: symmetry
actinomorphic, zygomorphic or irregular

flower: receptacle
small

flower: disc
absent

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
0

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
1

pistil: ovary
1-locular

pistil: ovule
1 in each loculus

pistil
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
straight

seed: endosperm
seeds with endosperm


 

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