Nepenthes bongso
Distribution (General)
Indonesia, Sumatra: Jambi, Bengkulu, Sumatra Barat, Sumatra Utara.A
A. Clarke, C.M. 2001: Nepenthes of Sumatra and Peninsular Malaysia
Etymology
After a local name, "Putri Bungsu"B
B. Clarke, C.M. 2001: Nepenthes of Sumatra and Peninsular Malaysia
Description
Stem: climbing, ≤ 5 m in length, ≤ 0.8 cm in diameter, internodes ≤15 cm long, cylindrical to angular.
Leaves: coriaceous, sessile; lamina obovate to spathulate, margins roughly parallel near the base, ≤ 20 cm long, ≤ 5 cm wide. Apex acute to rounded, tendril insertion usually sub-apical, base abruptly contracted where it meets the stem. Longitudinal veins 2-5 on each side of the midrib, pennate veins scattered and irregular; tendrils ≤ 30 cm long.
Rosette and lower pitchers: ellipsoid throughout, or ellipsoid in the lower ½ and cylindrical above, usually hipped (in which case the parts above the hip are always cylindrical), ≤ 20 cm high, ≤ 7 cm wide, with two fringed wings (≤ 5 mm wide) running from top to bottom. Glandular region covers the inner surface up to the hip. Mouth round, oblique throughout, raised into a short neck at the rear. Peristome expanded and either loosely cylindrical or flattened, ≤ 20 mm wide, teeth narrow, distinct and relatively long, ribs ≤ 2 mm apart. Lid cordate to orbicular, sometimes with a simple, bifid or grossly carunculate appendage near the apex. Spur ≤ 7 mm long, unbranched.
Upper pitchers: arising abruptly from the tendril, the latter having a wide arc. Pitchers infundibular, widening gradually throughout, but noticeably contracted immediately below the peristome, ≤ 35 cm high, ≤ 8 cm wide, wings reduced to ribs. Peristome considerably narrower than in the lower pitchers, often loosely cylindrical, teeth shorter and less distinct, mouth elongated into a short neck at the rear. Lid may bear a carunculate appendage on the lower surface towards the apex, and/or a simple or hook-shaped appendage on the lower surface, towards the base. All other parts similar to those of the lower pitchers.
Inflorescence: a raceme; peduncle ≤ 10 cm long, rachis ≤ 15 cm. Partial peduncles ≤ 12 mm long, one- or two-flowered, with or without bracteoles. Sepals ovate, ≤ 3 mm long. Female inflorescence of similar structure to the male, but often more robust and with a shorter rachis.
Indumentum: most parts covered with short, simple caduceus hairs when young. Mature parts virtually glabrous, but for the rachis, which may be fringed with short brown to white hairs.C
C. Clarke, C.M. 2001: Nepenthes of Sumatra and Peninsular Malaysia
Leaves: coriaceous, sessile; lamina obovate to spathulate, margins roughly parallel near the base, ≤ 20 cm long, ≤ 5 cm wide. Apex acute to rounded, tendril insertion usually sub-apical, base abruptly contracted where it meets the stem. Longitudinal veins 2-5 on each side of the midrib, pennate veins scattered and irregular; tendrils ≤ 30 cm long.
Rosette and lower pitchers: ellipsoid throughout, or ellipsoid in the lower ½ and cylindrical above, usually hipped (in which case the parts above the hip are always cylindrical), ≤ 20 cm high, ≤ 7 cm wide, with two fringed wings (≤ 5 mm wide) running from top to bottom. Glandular region covers the inner surface up to the hip. Mouth round, oblique throughout, raised into a short neck at the rear. Peristome expanded and either loosely cylindrical or flattened, ≤ 20 mm wide, teeth narrow, distinct and relatively long, ribs ≤ 2 mm apart. Lid cordate to orbicular, sometimes with a simple, bifid or grossly carunculate appendage near the apex. Spur ≤ 7 mm long, unbranched.
Upper pitchers: arising abruptly from the tendril, the latter having a wide arc. Pitchers infundibular, widening gradually throughout, but noticeably contracted immediately below the peristome, ≤ 35 cm high, ≤ 8 cm wide, wings reduced to ribs. Peristome considerably narrower than in the lower pitchers, often loosely cylindrical, teeth shorter and less distinct, mouth elongated into a short neck at the rear. Lid may bear a carunculate appendage on the lower surface towards the apex, and/or a simple or hook-shaped appendage on the lower surface, towards the base. All other parts similar to those of the lower pitchers.
Inflorescence: a raceme; peduncle ≤ 10 cm long, rachis ≤ 15 cm. Partial peduncles ≤ 12 mm long, one- or two-flowered, with or without bracteoles. Sepals ovate, ≤ 3 mm long. Female inflorescence of similar structure to the male, but often more robust and with a shorter rachis.
Indumentum: most parts covered with short, simple caduceus hairs when young. Mature parts virtually glabrous, but for the rachis, which may be fringed with short brown to white hairs.C
Habitat
Epiphytic in lower montane forest; less commonly in upper montane forest, either epiqphytic or terrestrial; 1000-2700 m a.s.l.D
D. Clarke, C.M. 2001: Nepenthes of Sumatra and Peninsular Malaysia
Synonymy
- Isotype: Indonesia, Sumatra, G. Merapi, alt. 2500 m, P.W. Korthals s.n. (B)
- Lectotype: Indonesia, Sumatra, G. Merapi, alt. 2500 m, P.W. Korthals s.n. (K)
- Isotype: Indonesia, Sumatra, G. Merapi, alt. 2500 m, P.W. Korthals s.n. (W)
