That is certainly the case with the Nymphaea thermarum.

The Nymphaea thermarum was the garden's pin-up for International Day for Biodiversity, in May 2010.

As well as being hard to get at, the Nymphaea thermarum were not flowering in January.

We encamped at a fine Nymphaea lagoon, in the rich shade of a white drooping gum tree.

What you cannot have. The first batch of Nymphaea thermarum seeds arrived at Kew in July 2009.

Its sandy and occasionally rocky bed, was dry; but parallel lines of Nymphaea lagoons extended on both sides.

I threw a tin canister over to them, and they returned me a shower of roasted Nymphaea fruit.

In the lower part of the gully, we came upon some fine Nymphaea ponds and springs surrounded by ferns.

Why does the water-lily 'Kumud or Nymphaea' keep awake all night long and close her petals during the day?

From the moment that Magdalena successfully propagated the water lily, both scientists were excited about the Nymphaea thermarum's commercial potential.

They were planted next to a sign about Nymphaea thermarum and are believed to be the victims of mistaken identity.

No one else is getting worked up about the future of St Helena ebonies, Nymphaea thermarums and rare ant plants.

Besides his personal irritation, the Nymphaea thermarum was of such international importance that its theft had to be publicly recorded.

We don't give a toss. At one point, we drifted into the Princess of Wales Conservatory and paused by the Nymphaea thermarum.

A well grassed open forest extended along both sides of the river; and, at its left, large deep Nymphaea lagoons were parallel to it.

A small fish, a species of Gristes, about six inches long, was seen in the Nymphaea ponds, but we could not induce it to bite.