Famiglia: Araceae

Genere: Rhaphidophora

Nome: Rhaphidophora tenuis

Rhaphidophora tenuis engl., a species considered synonymous with the widespread and variable R. korthalsii Hassk. in the most recent revision of Bornean species is resurrected as an endemic to Sarawak and Brunei. A full description of R. tenuis is presented together with a modification to the most recent published key to Rhaphidophora in Borneo and photographs. This reinstatement takes to 5 the number of Rhaphidophora species recognized for Borneo.

Rhaphidophora latevaginata M.Hotta

Rhaphidophora è un genere della famiglia Araceae, che si verificano in Africa tropicale e verso est in Malesia e Australia nel Pacifico occidentale. Il genere comprende circa 100 specie.

Rhaphidophora is a genus in the family Araceae, occurring from tropical Africa eastwards through Malesia and Australasia to the Western Pacific. The genus consists of approximately 100 species.

CLASSIFICAZIONE SCIENTIFICA

Regno: Plantae

Non classificato: Angiosperme

Non classificato: Monocotiledoni

Ordine: Alismatales

Famiglia: Araceae

Sottofamiglia: Monsteroideae

Tribù: Monstereae

Genere: Raphidophora (Hassk, 1842)

Sinonimi

Raphidophora Hassk

Afroraphidophora Engl.

DESCRIZIONE

Questo è un genere di piante rampicanti, robuste e sempreverdi.

This is a genus of evergreen, robust, climbing plants. The flowers are bisexual, lacking a perigone. The spathe is shed after flowering. The ovules number eight or more and are superposed on two (rarely 3) parietal placentas of the ovary. The flowers produce many, ellipsoid, straight seeds with a brittle and smooth outer coat (testa).

These are hemiepiphytes, plants capable of beginning life as a seed and sending roots to the soil, or beginning as a terrestrial plant that climbs a tree and then sends roots back to the soil. In rare cases they are terrestrial rheophytes (plants that grow in fast-flowing water).

Their bast fibers have typically abundant, long and slender trichosclereids, merging with the fibers of the sclerenchyma. If the blade of the leaf is torn, many hairs become apparent. The leaf stalks bend abruptly at their top. The leaf margin is entire. The leaves are pinnatifid to pinnatisect (cut with deep opposite lobing). The leaf venation is parallel (with veins running parallel for the length of the leaf), pinnate (one mid-vein with smaller veins branching off laterally) to reticulate (feather-veined).

Chemistry

Six compounds extracted from the dried leaves and stems of Rhaphidophora decursiva have been shown to possess activity against the malarial agent Plasmodium falciparum. Polysyphorin and rhaphidecurperoxin showed the strongest antimalarial activity, while rhaphidecursinol A, rhaphidecursinol B, grandisin, and epigrandisin were less active. Rhaphidecursinol A and rhaphidecursinol B were determined to be neolignans, a major class of phytoestrogens, while rhaphidecurperoxin is a new benzoperoxide.

Heterotypic synonyms

Raphidophora Hassk., Tijdschr. Natuurl. Gesch. Physiol. 9: 168 (1842), orth. var.
Afrorhaphidophora Engl. in H.G.A.Engler & K.A.E.Prantl, Nat. Pflanzenfam., Nachtr. 3: 31 (1906).

Taxonomy

Research on the chloroplast DNA sequence data (trnL-F) has shown that Rhaphidophora and Epipremnum are paraphyletic, forming three informal groups with other genera of the paraphyletic tribe Monstereae. This may result in taxonomic changes in this genus. The genera Rhaphidophora, Epipremnum, and Monstera are poorly differentiated.

One cultivar Rhaphidophora excelsa `Exotica’ has been recognized.

Selected species

Rhaphidophora acuminata Merr., Philipp. J. Sci., C 10: 265 (1915).
Rhaphidophora africana N.E.Br., Bull. Misc. Inform. Kew 1897: 286 (1897).
Rhaphidophora angustata Schott, Ann. Mus. Bot. Lugduno-Batavi 1: 128 (1863).
Rhaphidophora araea P.C.Boyce, Gard. Bull. Singapore 52: 116 (2000).
Rhaphidophora australasica F.M.Bailey, Queensland Agric. J. 1: 453 (1897).
Rhaphidophora balgooyi P.C.Boyce, Gard. Bull. Singapore 52: 118 (2000).
Rhaphidophora banosensis P.C.Boyce, Gard. Bull. Singapore 52: 222 (2000 publ. 2001).
Rhaphidophora beccarii (Engl.) Engl., Bot. Jahrb. Syst. 1: 181 (1881).
Rhaphidophora bonii Engl. & K.Krause in H.G.A.Engler, Pflanzenr., IV, 23B: 34 (1908).
Rhaphidophora brevispathacea Engl. & K.Krause, Bot. Jahrb. Syst. 54: 79 (1916).
Rhaphidophora calophylla Schott, Prodr. Syst. Aroid.: 380 (1860).
Rhaphidophora chevalieri Gagnep., Notul. Syst. (Paris) 9: 136 (1941).
Rhaphidophora conica Engl., Bot. Jahrb. Syst. 1: 181 (1881).
Rhaphidophora conocephala Alderw., Bull. Jard. Bot. Buitenzorg, III, 1: 384 (1920).
Rhaphidophora corneri P.C.Boyce, Gard. Bull. Singapore 51: 205 (1999).
Rhaphidophora crassicaulis Engl. & K.Krause in H.G.A.Engler, Pflanzenr., IV, 23B: 52 (1908).
Rhaphidophora crassifolia Hook.f., Fl. Brit. India 6: 543 (1893).
Rhaphidophora cravenschoddeana P.C.Boyce, Gard. Bull. Singapore 53: 96 (2001).
Rhaphidophora cretosa P.C.Boyce, Gard. Bull. Singapore 52: 228 (2000).
Rhaphidophora cryptantha P.C.Boyce & C.M.Allen, Gard. Bull. Singapore 53: 99 (2001).
Rhaphidophora cylindrosperma Engl. & K.Krause in H.G.A.Engler, Pflanzenr., IV, 23B: 28 (1908).
Rhaphidophora dahlii Engl., Bot. Jahrb. Syst. 25: 8 (1898).
Rhaphidophora decursiva (Roxb.) Schott, Bonplandia (Hannover) 5: 45 (1857).
Rhaphidophora discolor Engl. & K.Krause, Bot. Jahrb. Syst. 54: 80 (1916).
Rhaphidophora dulongensis H.Li, Acta Bot. Yunnan., Suppl. 5: 7 (1992).
Rhaphidophora elliptica Ridl., J. Straits Branch Roy. Asiat. Soc. 44: 186 (1905).
Rhaphidophora elliptifolia Merr., J. Straits Branch Roy. Asiat. Soc., Spec. No.: 88 (1921).
Rhaphidophora elmeri Engl. & K.Krause, Bot. Jahrb. Syst. 44(101): 11 (1910).
Rhaphidophora falcata Ridl., J. Straits Branch Roy. Asiat. Soc. 44: 198 (1905).
Rhaphidophora floresensis P.C.Boyce, Gard. Bull. Singapore 52: 126 (2000).
Rhaphidophora foraminifera (Engl.) Engl., Pflanzenr., IV, 23B: 45 (1908).
Rhaphidophora formosana Engl., Bot. Jahrb. Syst. 25: 10 (1898).
Rhaphidophora fortis P.C.Boyce, Gard. Bull. Singapore 53: 104 (2001).
Rhaphidophora geniculata Engl., Bot. Jahrb. Syst. 25: 7 (1898).
Rhaphidophora glauca (Wall.) Schott, Bonplandia (Hannover) 5: 45 (1857).
Rhaphidophora gorokensis P.C.Boyce, Gard. Bull. Singapore 53: 111 (2001).
Rhaphidophora guamensis P.C.Boyce, Gard. Bull. Singapore 53: 112 (2001).
Rhaphidophora hayi P.C.Boyce & Bogner, Gard. Bull. Singapore 52: 91 (2000).
Rhaphidophora honkongensis Schott, Prodr. Syst. Aroid.: 378 (1860).
Rhaphidophora hookeri Schott, Prodr. Syst. Aroid.: 381 (1860).
Rhaphidophora intonsa P.C.Boyce, Gard. Bull. Singapore 53: 119 (2001).
Rhaphidophora intrusa P.C.Boyce, Gard. Bull. Singapore 53: 120 (2001).
Rhaphidophora jubata P.C.Boyce, Gard. Bull. Singapore 53: 124 (2001).
Rhaphidophora kokodensis P.C.Boyce, Gard. Bull. Singapore 53: 127 (2001).
Rhaphidophora korthalsii Schott, Ann. Mus. Bot. Lugduno-Batavi 1: 129 (1863).
Rhaphidophora laichauensis Gagnep., Notul. Syst. (Paris) 9: 137 (1941).
Rhaphidophora latevaginata M.Hotta, Acta Phytotax. Geobot. 22: 4 (1966).
Rhaphidophora lobbii Schott, Prodr. Syst. Aroid.: 379 (1860).
Rhaphidophora luchunensis H.Li, Acta Phytotax. Sin. 15(2): 103 (1977).
Rhaphidophora maingayi Hook.f., Fl. Brit. India 6: 543 (1893).
Rhaphidophora manipurensis Engl. & K.Krause, Bot. Jahrb. Syst. 45: 659 (1911).
Rhaphidophora megaphylla H.Li, Acta Phytotax. Sin. 15(2): 102 (1977).
Rhaphidophora megasperma Engl., Bot. Jahrb. Syst. 25: 8 (1898).
Rhaphidophora megastigma Engl., Bot. Jahrb. Syst. 1: 180 (1881).
Rhaphidophora microspadix K.Krause, Bot. Jahrb. Syst. 49: 92 (1912).
Rhaphidophora mima P.C.Boyce, Gard. Bull. Singapore 53: 138 (2001).
Rhaphidophora minor Hook.f., Fl. Brit. India 6: 544 (1893).
Rhaphidophora moluccensis Engl. & K.Krause in H.G.A.Engler, Pflanzenr., IV, 23B: 36 (1908).
Rhaphidophora montana (Blume) Schott, Ann. Mus. Bot. Lugduno-Batavi 1: 128 (1863).
Rhaphidophora monticola K.Krause, Bot. Jahrb. Syst. 44(101): 12 (1910).
Rhaphidophora neoguineensis Engl. in K.M.Schumann & U.M.Hollrung, Fl. Kais. Wilh. Land: 19 (1889).
Rhaphidophora nicolsonii P.C.Boyce, Gard. Bull. Singapore 51: 236 (1999).
Rhaphidophora okapensis P.C.Boyce & Bogner, Gard. Bull. Singapore 52: 94 (2000).
Rhaphidophora oligosperma Alderw., Bull. Jard. Bot. Buitenzorg, III, 4: 340 (1922).
Rhaphidophora ovoidea A.Chev., J. Bot. (Morot) 22: 135 (1909).
Rhaphidophora pachyphylla K.Krause, Bot. Jahrb. Syst. 49: 92 (1912).
Rhaphidophora parvifolia Alderw., Bull. Jard. Bot. Buitenzorg, III, 4: 338 (1922).
Rhaphidophora peepla (Roxb.) Schott, Bonplandia (Hannover) 5: 45 (1857).
Rhaphidophora peeploides Engl., Bot. Jahrb. Syst. 25: 7 (1898).
Rhaphidophora perkinsiae Engl., Bot. Jahrb. Syst. 37: 115 (1905).

An Illustration of Raphidophora pertusa.

Rhaphidophora pertusa (Roxb.) Schott, Bonplandia (Hannover) 5: 45 (1857).
Rhaphidophora petrieana A.Hay, Telopea 5: 295 (1993).
Rhaphidophora philippinensis Engl. & K.Krause in H.G.A.Engler, Pflanzenr., IV, 23B: 137 (1908).
Rhaphidophora pilosa P.C.Boyce, Gard. Bull. Singapore 53: 151 (2001).
Rhaphidophora puberula Engl., Bot. Jahrb. Syst. 1: 180 (1881).
Rhaphidophora sabit P.C.Boyce, Gard. Bull. Singapore 52: 161 (2000).
Rhaphidophora sarasinorum Engl., Bot. Jahrb. Syst. 37: 114 (1905).
Rhaphidophora schlechteri K.Krause, Bot. Jahrb. Syst. 49: 94 (1912).
Rhaphidophora schottii Hook.f., Fl. Brit. India 6: 544 (1893).
Rhaphidophora spathacea Schott, Ann. Mus. Bot. Lugduno-Batavi 1: 129 (1863).
Rhaphidophora spuria (Schott) Nicolson, Allertonia 1: 348 (1978).
Rhaphidophora stenophylla K.Krause, Bot. Jahrb. Syst. 49: 94 (1912).
Rhaphidophora stolleana Engl. & K.Krause, Bot. Jahrb. Syst. 54: 79 (1916).
Rhaphidophora sulcata Gagnep., Notul. Syst. (Paris) 9: 137 (1941).
Rhaphidophora sylvestris (Blume) Engl. in A.L.P.de Candolle & A.C.P.de Candolle, Monogr. Phan. 2: 239 (1879).
Rhaphidophora talamauana Alderw., Bull. Jard. Bot. Buitenzorg, III, 1: 384 (1920).
Rhaphidophora tenuis Engl., Bot. Jahrb. Syst. 1: 181 (1881).
Rhaphidophora ternatensis Alderw., Bull. Jard. Bot. Buitenzorg, III, 4: 194 (1922).
Rhaphidophora tetrasperma Hook.f., Fl. Brit. India 6: 548 (1893).
Rhaphidophora teysmanniana Engl. & K.Krause in H.G.A.Engler, Pflanzenr., IV, 23B: 35 (1908).
Rhaphidophora todayensis K.Krause, Bot. Jahrb. Syst. 45: 658 (1911).
Rhaphidophora tonkinensis Engl. & K.Krause in H.G.A.Engler, Pflanzenr., IV, 23B: 34 (1908).
Rhaphidophora typha P.C.Boyce, Gard. Bull. Singapore 57: 211 (2005).
Rhaphidophora ustulata P.C.Boyce, Gard. Bull. Singapore 52: 176 (2000).
Rhaphidophora versteegii Engl. & K.Krause, Nova Guinea 8: 248 (1910).
Rhaphidophora waria P.C.Boyce, Gard. Bull. Singapore 53: 174 (2001).
Epipremnum aureum was once categorized in this genus.