The flower appears out of the winter rosette. In culture I could observe the formation of only one flower per vegetation period. The flower stalk is up to 6 cm long and of brown-reddish colour, densely covered with 1 mm long white hair. The corolla is divided into an upper and a lower lip. The lobes of the upper lip are about 6 mm long and the outermost part is lightly blueish to pale violet coloured. The lower lip consists of 3 lobes. The middle lobe is up to 9 mm long and the 2 side lobes can achieve a length of 6 mm. The spur is approximately 5 mm long, of a light green colour and its form reminds to P. agnata. The tube is white coloured with an oval light green spot at the base, which is visible also on the outside of the tube. The calyx is two-lipped and of a light green colour. The lobes of the calyx are only 1 mm in size and pointed.
Cultivation of this species is not very easy. Among all Maxican Pinguicula species I grow these plants do form their winter buds first (already in August). If you keep then the soil still wet, the plants begin to form summer leaves again. Under these cool-wet conditions in winter, often plants tend to rot and will die. Therefore it is important to keep the soil damp or dry when the plants have formed their winter rosette. The use of a permeable substrate is of advantage.
In 1993 near Santiago Nuyoo Pass in the Mexican district of Oaxaca Alfred Lau collected some plants that he sent to some growers in Europe without knowing what species it could be. In the description of P. mirandae in 1998 the authors pointed out that a plant named Pinguicula 'Santiago Nuyoo' should be the same as P. mirandae.
After several years of cultivation I was convinced that the plants I grew were not identical to P. mirandae, but a new and undescribed butterwort species. Finally in 2003 the plant was officially described as P. conzattii by S. Zamudio and J. van Marm, denominating the species after the botanist Don Cassiano Conzatti, who dedicated 50 years of his life to the flora of Oaxaca.
The summer rosette consists of up to 10 leaves and can achieve a size of 4 cm in length and 2 cm in width. The margin of the leaf is upturned and is showing a light red coloration. A quite striking feature are the numerous white coloured hair, which can be found on the upper side of the leaf base. The summer leaves are of a dark green colour while the middle leaf nerv is light green or yellowish. When the plant is forming its winter rosette, the summer leaves are getting smaller and smaller until only winter leaves are produced.
The winter rosette consists of numerous non-carnivorous leaves (40-80). The colour of the leaves is light green, with the base coloured light violet.The leaves can be up to 1 cm long in size and 3 mm wide. The tip of the leaves is rounded or slightly acute. A specific feature of the winter leaves is their surface structure. On first sight you have the impression that it looks like an compound eye of an insect with a shining aspect when exposed to bright light. If you take a closer look it is clear that the structure originates in the plants cells. The upper third of the leave is covered with isolated white hair.