Nymphaea tenuinervia
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| Nymphaea tenuinervia | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Order: | Nymphaeales |
| Family: | Nymphaeaceae |
| Genus: | Nymphaea |
| Subgenus: | Nymphaea subg. Hydrocallis |
| Species: | N. tenuinervia |
| Binomial name | |
| Nymphaea tenuinervia Casp.[1] | |
| Synonyms[1] | |
| |
Nymphaea tenuinervia is a species of waterlily native to Colombia, Guyana and Brazil.[1]
Vegetative characteristics
Nymphaea tenuinervia is an aquatic herb.[2] The ovoid rhizome is stoloniferous throughout the vegetative period.[3] The heart-shaped to egg-shaped leaves have a firm texture and entire margins.[4] The leaf blade is 21 cm long and 19 cm wide.[3] The abaxial leaf surface features elongated round, small, black spots directed along their longitudinal axis toward the centre of the leaf blade. The petiole bears downward-facing trichomes towards its upper end.[4] The leaf bears characteristic bifurcated (Y-shaped) trichosclereids in the mesophyll layer of the leaf.[5][6]
Generative characteristics
Nymphaea tenuinervia has protogynous flowers with nocturnal anthesis.[8] The floral fragrance has been described as solvent-like. It is primarily composed of anisole, but also significantly smaller amounts of (methoxymethyl)benzene and butyl acetate.[7] The ovoid, granulose, pilose seeds feature trichomes arranged in continuous longitudinal lines.[2]
Cytology
Reproduction
Vegetative reproduction
In most populations vegetative reproduction through stolons plays a significant role in reproduction.[3] Proliferating pseudanthia are absent.[2]
Generative reproduction
Autogamy was not observed in this species, therefore a reliance on out-crossing for generative reproduction is likely.[3][8]
Habitat
In Brasil, it occurs in the Amazon rainforest, the central Brazilian savanna, and the Atlantic rainforest as aquatic vegetation.[2]
Taxonomy
Type specimen
The type specimen was collected near Juazeiro in the St. Francisco river of Bahia, Brazil in April 1819.[10][11][3]
Placement within Nymphaea
It is a member of Nymphaea subg. Hydrocallis.[3][7]
Orthographic variants
In the original description it was first named Nymphaea tenuinervia. However, in other parts of the publication it is spelled as Nymphaea tenerinervia.[3][10] Nymphaea tenerinervia Casp. is an orthographical variant of Nymphaea tenuinervia Casp.[12]