Pinguicula planifolia Chapm

BOTANICAL NAME: Pinguicula caerulea Walt. COMMON NAME: Violet butterwort (referring to the color of the flower).

RANGE: The southeastern coastal plain from North Carolina to the middle panhandle of Florida.

FLOWERING SEASON: February to May. TRAP SEASON: No winter hibernacula.

DESCRIPTION.— The rosettes are pale green and measure 5-10 cm across. The leaves have sharply rolled edges and are pointed. The scapes are tall (to 20 cm), and the large 2.5-3.0 cm corollas are violet with prominent venation of a deeper violet. The palate beard is exserted and colored greenish yellow to cream.

GENERAL.— In the vegetative stages of later summer, it is practically impossible to tell this species from P. lutea, with which it sometimes grows. But in the spring, the deep-veined, violet flowers of P. caerulea certainly contrast with the yellow flowers of the other species.

BOTANICAL NAME: Pinguicula planifolia Chapm. RANGE: The gulf coastal plain from the mid-Florida panhandle west to Louisiana. FLOWERING SEASON: March to April. TRAP SEASON: No winter hibernacula.

Fig. 6-7. The flower of P. caerulea. Venation is very prominent in this large flower. You can just see the top of the anterior stigma lobe down in the tube entrance.

Fig. 6-8. The flower of P. planifolia, with prominent ex-serted beard, pale purple color, and deeply incised corolla lobes.

DESCRIPTION.— The large rosettes measure to 15 cm across, and the older leaves are flat and have only slightly rolled edges. The leaves are mostly a dull red to purple, although green races are common. The tall scape bears a 3 cm, violet, unveined flower, which tends to be darker colored around the tube entrance. A prominent characteristic is that the lobes of the corolla are deeply incised to at least half their length, so that, at a glance, it appears as if the corolla has ten lobes instead of five. The palate beard is exserted and bright yellow.

GENERAL.— In contrast to the previously described species of the southeastern coastal plain, this and the next two species grow in constantly wet areas, sometimes completely submerged in water for periods of time. The distinctly purple, unveined flower of P. plani-folia, with its deeply incised corolla lobes, makes for easy identification in the spring. When the plant is not in flower, remember that it is the only species with reddish leaves. But different races and shade-grown plants of P. planifolia have green leaves, and in such cases there will be some difficulty in distinguishing non-flowering plants from the next two species.

Fig. 6-9. P. planifolia. The leaves have a reddish color.

Fig. 6-9. P. planifolia. The leaves have a reddish color.

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