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Tên Khoa học: Podochilus rotundipetala Aver. et Vuong
Tên tiếng Anh:
Tên tiếng Việt: Túc cước hai đài tròn
Tên khác:

MÔ TẢ CHUNG

Perennial clustering lithophytic herb. Stem few to many, erect, slender, rigid, rather straight, simple, leafy throughout, covered by sheathing leaf bases, (8)10–15(17) cm tall, densely tufted on short insignificant plagiotropic rhizome. Leaves numerous, distichous, lying in one plane, rigid, coriaceous, sessile, joined, sheathing at base, elliptic, (8)10–12(14) mm long, (1.2)1.5–2(2.4) mm wide, with prominent median vein, acute. Inflorescence terminal, short, (1)2–7(10) flowered, raceme. Scape and rachis (2)4–7(10) mm long, greenish with purple tint to light, pale pink-purple; scape with few small conduplicate papyraceous bracts or several greenish conduplicate rudimentary leaves. Floral bracts greenish to pale purple, triangular, conduplicate, acute, persistent, (1.2)1.5–2(2.2) mm long, (0.5)0.6–1(1.2) mm wide. Pedicel and ovary white, cylindrical, slightly curved, (2)2.2–2.8(3) mm long, (0.6)0.8–1(1.2) mm in diam. Flowers opening in succession, entirely white, not widely opening, (2)2.2– 2.4(2.5) mm across. Sepals fleshy, subsimilar, broadly ovate to sub-circular, (1.4)1.6–1.8(2) mm long and wide; lateral sepals slightly oblique, adnate with their flesh base with very short base of the column, forming no mentum. Petals fleshy, almost circular, little shorter than sepals, forward directed. Lip fleshy, spurless, entire, shortly cymbiform, being flattened broadly obovate to sub-circular, (1.3)1.4–1.5(1.6) mm long, (0.9)1–1.2(1.3) mm wide, with fleshy apex and large inflated callus on each side at the base, joined to column base by short narrow stalk. Column shortly cylindrical, footless, (0.7)0.8–1(1.2) mm tall and wide, simple; rostellum in form of thin plate, bifurcate at apex; stigma large, concave; anther cap 0.6–0.8 mm in diam., bilobe, with small umbo at apex. Pollinarium 0.5 mm long, with narrowly ellipsoid viscidium and two half funnel-like stipes, each bearing 2 narrowly conoid pollinia. Fruit obovoid, ribbed, dirty purple capsule, (2.8)3–4(4.2) mm long.

Etymology

Species epithet refers almost circular petals

Habitat, phenology and conservation status

Clustering lithophytic herb. Primary humid broad-leaved evergreen montane forests on granite. 1400–1500 m. Fl. January–February, May–June.

Rare.

Estimated IUCN Red List status – DD.

Distribution

Vietnam province: Khanh Hoa (Hon Ba Mountains).

Endemic.

ẢNH

Podochilus rotundipetala Aver et Vuong on Tuoitrenews.jpg at www.BotanyVN.com

Ảnh 1. Podochilus rotundipetala Aver et Vuong on Tuoitrenews.jpg

 

Podochilus rotundipetala on Taiwania 61(4) - 1.jpg at www.BotanyVN.com

Ảnh 2. Podochilus rotundipetala on Taiwania 61(4) - 1.jpg

 

Podochilus rotundipetala on Taiwania 61(4) - 2.jpg at www.BotanyVN.com

Ảnh 3. Podochilus rotundipetala on Taiwania 61(4) - 2.jpg

 

Podochilus rotundipetala on Taiwania 61(4) - 3.jpg at www.BotanyVN.com

Ảnh 4. Podochilus rotundipetala on Taiwania 61(4) - 3.jpg

 

PHÂN LOẠI KHOA HỌC
Giới: Thực vật
Ngành: Magnoliophyta
Lớp: Liliopsida
Bộ: Orchidales
Họ: Orchidaceae
Chi: Podochilus

CHỈ SỐ

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