Drosera sessilifolia

Drosera sessilifolia ແມ່ນ sundew ນ້ອຍອາເມຣິກາໃຕ້ທີ່ມີ rosette ຂອງ rounded, leaves yellowish ແລະດອກສີແດງ-lila. ໃນທໍາມະຊາດມັນແມ່ນປົກກະຕິແລ້ວເປັນປີທີ່ອາໄສຢູ່ໃນລະດູຝົນດຽວ.

Drosera sessilifolia forms a rosette of small, wedge-shaped to round carnivorous leaves. The leaves are usually yellowish and become redder with age. Plants are usually 1 to 2 cm across, and the largest wild rosettes recorded measured 4.5 cm.

The tiny flowers have pink-lilac or light lilac petals, and the sepals are often covered with short, stiff red hairs. The flower stalks are usually 5 to 8 cm tall and do not curve at the base, although one stalk 52 cm tall has been recorded.

It is very similar to its closest relative, Drosera burmannii, and the two make up section Thelocalyx. D. sessilifolia generally has rounder leaf blades and wider, shorter petioles, while D. burmannii has wedge-shaped, almost triangular leaves. Flower color does not separate them reliably, because some D. burmannii also have pink flowers. Both species have five styles that divide at the tip, unlike the other sundews of the Americas.

ເຂດເດີມ: ບຣາຊິນ, ເວເນຊູເອລາ ແລະ ກາຊຽນ

ເຂດດິນຟ້າອາກາດ: ຮ້ອນ, ມີລະດູຝົນ ແລະ ລະດູແຫ້ງທີ່ແຕກຕ່າງກັນ

D. sessilifolia ຂະຫຍາຍຕົວໃນດິນຊາຍຫຼືດິນຊາຍໃນ seasonal ລະບາຍ, ບ່ອນທີ່ຮູບເງົານ້ໍາຫນາປົກຄຸມທອງແດງໃນລະດູຝົນ; ຢູ່ດ້ານລຸ່ມຂອງລະບາຍເຫຼົ່ານີ້ມັນຍັງເຕີບໃຫຍ່ໃນດິນຊາຍແຫ້ງຫຼືດິນຊາຍ. ມັນໄດ້ຖືກບັນທຶກຈາກປະມານ 150 m ສູງໃນ Pantanal ຖ້ວມພູສູງເຖິງປະມານ 1,200 m ທີ່ Chapada dos Veadeiros. ໃນບຣາຊິນມັນໄດ້ຖືກຮູ້ຈັກຈາກຫຼາຍລັດ, ຈາກ Minas Gerais ແລະ Goiás ຫາຝັ່ງຕາເວັນອອກສຽງເໜືອ, ບ່ອນທີ່ມັນເຕີບໃຫຍ່ໃກ້ກັບສວນນ້ໍາທີ່ສ້າງຂຶ້ນໃນບັນດາຫີນຊາຍໃນລະດູຝົນ. ມັນຢູ່ບ່ອນທີ່ລະດູຝົນແຫ້ງແລະແຫ້ງແມ່ນແຕກຕ່າງກັນຫຼາຍ.

ຂະໜາດໃຫຍ່: Rosette ປົກກະຕິແລ້ວ 1-2 ຊມ across (ເຖິງ 4.5 ຊມ); ດອກໄມ້ stalks ປົກກະຕິແລ້ວ 5-8 ຊມ

ອັດຕາການເຕີບໂຕ: ​រហ័ស

ປະເພດໃສ່ກັບດັກ: Flypaper Trap

ຄືກັນກັບຕົ້ນໄມ້ອື່ນໆ, ໃບມີກ້າມຊີ້ນທີ່ແຂງແຮງ ເຊິ່ງມີກິ່ນຫອມທີ່ດຶງດູດ ແລະ ຈັບສັດຕູພືດນ້ອຍໆ. ກ້າມຊີ້ນນັ້ນຈະປ່ອຍເອນຊີມິນທີ່ກິນອາຫານຂອງສັດຕູພືດ ແລະ ໃບຈະດູດຊຶມສານອາຫານ.

In the wild it grows, flowers, sets seed and dies within one rainy season; the seed sprouts with the next rains.
In seepages its seed germinates under a film of water and algae, so seedlings are often seen still submerged.
It and Drosera burmannii are the only two species in section Thelocalyx.
A hybrid with D. burmannii was made in cultivation in 1994 and called D. x thelocalyxiana.
Seed sold as D. sessilifolia before 2009 was sometimes D. burmannii or a hybrid.

ຊາວຝຣັ່ງ Auguste de Saint-Hilaire botanist ພົບເຫັນ Drosera sessilifolia ໃນພາກຕາເວັນຕົກ Minas Gerais, ບຣາຊິນ, ໃກ້ກັບແມ່ນໍ້າ São Francisco, ແລະໄດ້ອະທິບາຍມັນໃນ 1824. George Bentham ໄດ້ອະທິບາຍ Drosera dentata ຈາກ Guyana ໃນ 1842, ແລະ Ludwig Diels ຫຼຸດລົງມັນໄປເປັນຊື່ຄ້າຍຄືຂອງ D. sessilifolia ໃນ 1906 ຂອງລາວ monograph ຂອງ Droseraceae. ໃນ 1996 ຊາວຝຣັ່ງ botanist Fernando Rivadavia ໄດ້ອະທິບາຍການຊອກຫາມັນໃນປ່າທໍາມະຊາດພຽງແຕ່ຫຼັງຈາກການເດີນທາງຫຼາຍ, ເພາະວ່າພືດໄດ້ເສຍຊີວິດແລ້ວກັບຄືນໄປບ່ອນໃນລະດູແຫ້ງ.

1. Drosera sessilifolia, Wikipedia
2. Rivadavia, F. (1996). Drosera sessilifolia. Carnivorous Plant Newsletter 25(1): 26-29
3. Growing Drosera burmannii and D. sessilifolia, International Carnivorous Plant Society
4. Growing Subtropical Drosera, International Carnivorous Plant Society
5. Drosera, Wikipedia