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Hansen & Rahn | Family List

Xyridaceae C. Agardh

habit
herbaceous plants

important diagnostics
bulb present

distribution
African, Asian, Australian and Oceanian, South American

leaf: position
alternate, distichous, ensiform

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

leaf: stipules
absent

inflorescence
head

flower: sexuality
bisexual

flower: symmetry
actinomorphic, zygomorphic or irregular

flower: receptacle
small

flower: disc
absent

flower: perianth number
5, 6

flower: perianth nature
perianth of calyx and corolla

flower: sepal number
2, 3

flower: sepal position
all free from one another, connate

flower: sepal nature
sepals imbricate or contorted

flower: petal number
3

flower: petal position
all free from one another, petals connate, petals imbricate

stamen: number
3

stamen: symmetry
the same number as and opposite the petals or alternate with the sepals

stamen: anthers
basifixed, introrse, extrorse, opening by longitudinal slits

stamen: filaments
inserted on the corolla, not connate

stamen: other characters
staminodia present

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

pistil: carpel
3

pistil: ovary
1-locular, 3-locular

pistil: ovule
3+ in each loculus

pistil
ovules parietal, carpels connate, ovules attached to the base of the ovary

fruit: type
a capsule

fruit: seed
3+ seeds

seed: embryo
straight

seed: endosperm
seeds with endosperm


 

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