Pinguicula ionantha

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TAXONOMY:

Family : Lentibulariaceae

Genus : Pinguicula

Name : Pinguicula ionantha

Sub-classification (Casper) : link

Publication : Godfrey in Godfrey & Stripling in Amer. Midl. Nat. 66 (1961) 405

DESCRIPTION :  In Casper

 

Perennis. Rhizoma smplex breve radicibus adventitiis numerosis filiformibus. Folia numerosa radicalia rosulata oblonga apice rotundata basin versus angustata plana integerrima superne glanduloso-viscosa glandulis sessilibus dense et glandulis stipitatis modice dense vestita 35 -80 mm longa, (9) 15 - 20 (25) mm lata laetevirentia. Hibernacula nulla. Pedicelli 1 - 5 (9) erecti glandulis stipitatis parce obtecti 95 -200 (250) mm alti uniflori. Flores mediocres (12) 15 - 20 (23) mm longi (calcari incluso). Calyx bilabiatus atro-olivaceus plerumque plus minusve purpurascens extus glandulis stipitatis vestitus; labium superum trilobum lobi oblongis rotundatis circa 4 mm longis; labium inferum bilobumlobis ovato-triangulis obtusis +/- 3 mm longis. Corolla subisolob pallide violacea vel alba extus glandulis stipitatis parce vestita lobis obovatis leviter emarginatis longioribus quam latis 7 - 9 (11) mm longis, 6 - 7 (9) mm latis. Tubus subcylindricus cum fauce plus saturate violaceo et venoso intus pilosus pilis albidis longe stipitatis clavate capitatis cum palato luteo et cymatio palati (4) 5 - 7 (8) mm longus 3 - 5 mm latus. Palatum conicum vel anguste cylindricum 4 - 6 mm longum 1.5 - 2 mm crassum exsertum antico luteum pilis luteis longe stipitatis clavate rubro-capitatis postico violaceum pilis singularibus vestitum; cymatium palati pilis breviter stipitatis suborbiculate vel late oblonge rubescente capitatis vestitum. Calcar breve subcylindricum obtusum flavum vel olivaceum (2) 4 - 5 (6) mm longum cum tubo angulum obtusum vel rubrectum formans. Stamina +/- 1.5 mm longa; filamenta pallide violacea vel albida; antherae pallide luteae; pollen (3) 4 - 5 (6) - colporatum. Ovarium subglobosum glandulis stipitatis obtectum. Stigma bilbiatum labio infero violaceo. Capsula depresso-globosa, 5 mm diametro calyce incluso. Semina scobiformia numerosa oblongo-cylindrica brunnea 0.6 - 0.8 mm longa alveolata.  

Chromosomata 2n = 22 

 

Floret : II - IV (?)

 Translation :

- soon - 

ORIGIN AND HISTORY :

From South east of the USA in very limited areas.

Localisation / Map:  (source : U.S. FISH AND WILDLIFE SERVICE)

Pinguicula ionantha grow near the Gulf coast in the Florida panhandle between Tallahassee and Panama City (Godfrey and Wooten 1981, Florida Natural Areas Inventory). It is locally abundant in Apalachicola National Forest. 

(click on the map for better location and relief map)

HABITAT: (source : U.S. FISH AND WILDLIFE SERVICE)

Pinguicula ionantha inhabits seepage bogs on gentle slopes, deep quagmire bogs, ditches, and depressions in grassy pine flatwoods and grassy savannas. It often occurs in shallow standing water (Godfrey and Stripling 1961). In Franklin County, it occurs at a savanna with a particularly rich flora, including Macbridea alba (white birds-in-a-nest) and Scutellaria floridana (Florida skullcap), both federally listed as threatened species.

THREATS : (source : U.S. FISH AND WILDLIFE SERVICE)

All carnivorous plants are threaten by drainage of site, degradation of water quality and all human activities. As this species have a very limited distribution, it is more threaten than the other south-east USA Pinguicula. According to litterature, only 20 locations have been recorded !

The species is threatened by habitat degradation due to lack of prescribed fire and shading by planted pines. This plant does not tolerate shade and according to Kral (1983), canopy closure in pine plantations may result in loss or diminishment of the species until the next logging.

 

The Forest Service will be able to incorporate management measures for Pinguicula ionantha into its planning and management systems, probably by formal agreement with the Fish and Wildlife Service. State and Federal land acquisition projects on the southern periphery of the National Forest will protect and restore a great deal of habitat for this species, possibly enough to allow its delisting. Principal private landowners can be notified of locations and the importance of protecting this species's habitat through several mechanisms, including Florida's system for protecting endangered and threatened species from pesticide (including herbicide) application, and Florida's procedures for regional and local planning.

 

Source : Endangered and Threatened Species of the Southeastern United States (The Red Book)

 

For more information please contact :

U.S. Fish and Wildlife Service
6620 Southpoint Drive South, Suite 310
Jacksonville, Florida 32216-0912

Telephone: 904/232-2580 Fax: 904/232-2404

Introduction in culture :

This species is unfortunately still very rare in culture despite skilled growers that make seeds available worldwide but can be purchased in some limited carnivorous plants nurseries. 

 

DO NOT ACCEPT TO BUY WILD COLLECTED PLANTS (OR SUSPECTED). 

CULTURE AND MULTIPLICATION : 

(North hemisphere, France near Paris, in a garden  - see the map -)    

Life cycle : This species, native from Southeastern USA, stay all the year under rosette form. They rise beautiful various flowers from February to april according to temperatures. 

Media: The plants grow in a mix of 1/2 peat and 1/2 non calcareous sand.

Pot : plastic, colour terracotta, diameter 12.5cm, height 12cm.

 

Cultivation :  Here are the growing tips of Bob McMorris, one of the best grower I know for these species (personnal communication with Bob on September 29th 2001) :

"I would suggest 50% peat, 50% sand for P. lutea, P. caerulea and P. pumila (actually P. pumila occurs all the way south into the Florida Keys and the Bahamas, where they grow in pockets of limestone with perharps a bit of sand and decomposed plant matter; so I suspect this species can grow with a bit of vermiculite and less peat. The last three species); P. planifolia, P. primuliflora, and P. ionantha generally grow in very wet areas, with P. primuliflora having been recorded as growing under water along the edges of streams. 

I grow these species with a base of peat and then the upper layer of live Sphagnum. The seeds should be started on peat and then when large enough (perhaps the second season) moved into Sphagnum. The first 3 (P. lutea, P. caerulea and P. pumila) are usually found along side the road in low grasses where they get quite a lot of sun. The ground is usually damp not wet. The latter 3 (P. planifolia, P. primuliflora, and P. ionantha) are usually found in much wetter locations, but still receiving quite a lot of sun. I have grown them on the tray system under lights with success, however they do much better outdoors with full sun."   

Multiplication : Some plants in culture forms seeds but it is very rare as growers that succeed in having adult plants flowering in culture are not numerous despite this species behing easier than the others south-east USA Pinguicula.  

 PICTURES: (click to enlarge)