Memoires du Museum d'Histoire Naturelle 1: 368. 1815.

Common names: Water-poppy
Etymology: Greek hydro, water, and clavis, club-shaped, presumably from shape of pistils
Treatment appears in FNA Volume 22.
FNA22 P1 Butomus Limnocharis Hydrocleys pg 4.jpegHydrocleys nymphoides
Butomus umbellatus
Limnocharis flava

Stolons often present, terete. Leaves: submersed leaves phyllodia, (expanded petioles resembling and functioning like leaves), sessile; floating leaves long-petiolate, petioles terete, septate; blade orbiculate to oblong-lanceolate, base cordate [rounded], apex mucronate to obtuse. Inflorescences occasionally proliferating with stolons, leaves; scape septate; bracts subtending pedicel, distinct, elliptic to lanceolate, shorter than pedicel, delicate. Flowers: sepals persistent, erect, green, lanceolate, leathery, midvein absent [present], apex hoodlike; petals erect to spreading, yellow to white, orbiculate [oblong-obovate], longer than [shorter than] sepals; stamens in [1–] 4–5 series, outer often sterile; pistils terete, linear-lanceoloid, attenuate into style, style curved inward, apex papillose. Fruits ± terete, linear-lanceoloid, membranous, dehiscing along adaxial margins. Seeds 50 or more, sparsely to densely glandular-pubescent.


Introduced; North America, South America


Species 5 (1 in the flora).

... more about "Hydrocleys"
papillose +
hoodlike +, mucronate +  and obtuse +
Robert R. Haynes +
Richard +
cordate +
orbiculate;oblong-lanceolate +
distinct +
elliptic;lanceolate +
Water-poppy +
North America +  and South America +
u--shaped +
Greek hydro, water, and clavis, club-shaped, presumably from shape of pistils +
hypogynous +
linear-lanceoloid +  and terete +
membranous +
long-petiolate +  and sessile +
submersed +
yellow;white +
deciduous +
erect +  and spreading +
orbiculate +
attenuate +, linear-lanceoloid +  and terete +
Memoires du Museum d'Histoire Naturelle +
kenton1982a +
not septate +
glandular-pubescent +
persistent +
lanceolate +
Hydrocleys +
Limnocharitaceae +
caulescent +, stoloniferous +  and rhizomatous +