Nuphar orbiculata

(Small) Standley

Publ. Field Columbian Mus., Bot. Ser.8: 311. 1931 (as orbiculatum)

Synonyms: Nuphar lutea orbiculata Nymphaea bombycina
Basionyms: Nymphaea orbiculata
Found in FNA Volume 3.
Rhizomes ca. 7-8 cm diam. Leaves mostly floating, occasionally submersed; petiole terete. Leaf blade abaxially and adaxially green, often suffused with purple, orbiculate or nearly so, 20-45 × 20-45 cm, 1-1.2 times as long as wide, sinus ca. 1/2 length of midrib, lobes approximate to overlapping; surfaces abaxially densely pubescent. Flowers 4-8 cm diam.; sepals 6, abaxially green to adaxially yellow, never red-tinged toward base; petals oblong, thick; anthers 5-6 mm, longer than filaments. Fruit greenish or yellowish, cylindric to nearly globose, 3.5-5 cm, smooth basally, finely ribbed toward apex, slightly constricted below stigmatic disk; stigmatic disk green, yellow, or sometimes reddened, ca. 30-35 mm diam., undulate; stigmatic rays 12-28, linear or lanceolate, terminating 1-3 mm from margin of disk. Seeds 4-6 mm.

Phenology: Flowering mid spring–early fall.
Habitat: Acidic ponds
Elevation: 0-100 m

Distribution

Ala., Fla., Ga.

Discussion

Nuphar orbiculata is perhaps best treated as a subspecies. Plants intermediate between it and N. advena occur in southern Georgia and northern Florida.

References

None.

Facts about "Nuphar orbiculata"
AuthorJohn. H. Wiersema + and C. Barre Hellquist +
BasionymNymphaea orbiculata +
Elevation0-100 m +
HabitatAcidic ponds +
IllustratorJohn Myers +
PhenologyFlowering mid spring–early fall. +
ReferenceNone +
SynonymNuphar lutea orbiculata + and Nymphaea bombycina +
Taxon nameNuphar orbiculata +
Taxon parentNuphar +
Taxon rankspecies +
VolumeVolume 3 +