Related species Nepenthes spectabilis

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an upper pitcher of n. rigidifolia


nepenthes spectabilis thought closely related n. lavicola. can distinguished species on basis of smaller floral bracts, longer fruits, , long unbranched spur. in addition, species differ in shape of lower pitchers. of n. lavicola urceolate globose, while of n. spectabilis ovoid in lower part , cylindrical above. furthermore, pitchers of n. lavicola dark brown or purple throughout, compared light green , dark brown speckled traps of n. spectabilis.


in nepenthes of sumatra , peninsular malaysia, charles clarke mentions undescribed taxon aceh intermediate in appearance between n. lavicola , n. spectabilis. unlikely of hybridogenic origin not sympatric other nepenthes species.


nepenthes rigidifolia bears superficial resemblance n. spectabilis, particularly in colouration of pitchers. apart markedly different upper pitchers, n. spectabilis differs former in having thin leaves, unbranched spur, , apical tendril insertion.


in 1928 monograph, b. h. danser placed n. spectabilis in nobiles clade. wrote:



the third group, of nobiles, comprises species form transition between vulgatae , montanae on 1 hand , regiae on other. n. spectabilis, sumatra, reminds 1 of n. sanguinea in many respects shows resemblance regiae yellowish colour of herbarium specimens , red-brown indumentum.



clarke suggests n. spectabilis perhaps have been better placed in montanae, includes several species appear closely related, such n. gymnamphora , n. pectinata .


in 2001, clarke published cladistic analysis of nepenthes species of sumatra , peninsular malaysia based on 70 morphological characteristics of each taxon. resultant cladogram placed n. spectabilis in small clade n. gymnamphora. however, since study limited in geographical scope, placement may not accurately reflect relationship between n. spectabilis , closest relatives.








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