The Star-In-A-Mist, or Pseudonigella stellaris, is the plant that produces hyperdimensional crystals used in geometry drive manufacturing. It derives from the Love-In-A-Mist, or Nigella damascena, touched by the influence of the original geometry drive when Rani Spengler first examined it. P. stellaris is almost as mysterious as the first drive itself: though its biology still owes a lot to N. damascena, the way it excretes crystals with its flowers leads some scientists to consider it as a new form of life altogether.

P. stellaris thus presents as a 15-20 centimetres tall chlorophyll-based plant with pinnately divided, thread-like leaves. When the flowers bloom in early Earth summer, P. stellaris starts producing millimetre-long crystal structures that run around the underside of the petals. These crystals have the same colour as the petals, ranging from pale purple to clear blue. Much like the geometry drive itself, they gleam in the dark after absorbing energy in the shape of light or sound. Though they can interact within our three-dimensional space, the crystals are, in fact, the three-dimensional pattern of a four-dimensional object: hypercube fragments. One of P. stellaris' colloquial names is “geometry flower”.

Much like its mundane counterpart, P. stellaris isn't particularly challenging to grow and tolerates a wide range of climates and soil compositions, but several additional parameters have to be considered. P. stellaris requires incredible amounts of energy (for a plant this size, at least) to grow its crystals. In the presence of a regular day-night cycle, P. stellaris is quick to deplete the host soil. It is generally not advised to grow P. stellaris near other valuable crops: the geometry flower will outcompete and invariably end up killing them. A single P. stellaris flower contains between two and three milligrams of hyperdimensional crystals: the average geometry drive requires harvesting about a thousand flowers, while its maintenance consumes ten to twenty flowers a year. On Earth, the geometry flowers are grown in rainy, mountainous regions like the Himalayas or the Andes.

Inhaling or ingesting leaves or flowers of P. stellaris isn't advised: though it is a rather common practice among navigators and gardeners, it leads to feelings of weightlessness and unrealism, where the subject may briefly feel as if they were in two places at once.

P. stellaris can be adapted to the majority of habitable planets: its ability to create hyperdimensional crystals gives it more resilience than its regular counterpart. The differences in the visible and invisible spectrum on the host planet may induce variations in crystal thus geometry drive colours, explaining the dark red drives of Ishtar or the pale blue crystals of Azur. Low-gravity and artificial lighting don't seem to be a problem, but P stellaris' unreasonable requirements can be quick to bankrupt the energy and ecosystemic budget of a station. 

There have been many attempts at forcing other plants to produce hypercube fragments: they have, so far, only managed to produce explosive geraniums.