Results 281 to 290 of about 13,769 (299)

Psychotria sarmentosoides Valeton 1909

2018
Published as part of Turner, I. M. & Kumar, V. S., 2018, Flora of Singapore precursors, 4. A summary of scandent Psychotria (Rubiaceae) in Singapore and Peninsular Malaysia, pp.
Turner, I. M., Kumar, V. S.
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Cytotoxic and Bacteriocidal Activities of Psychotria rostrata

International Journal of Pharmacognosy, 1993
AbstractQuadrigemine B, a major alkaloid of Psychotria rostrata, was shown to be cytotoxic with HEp-2 cells and normal human lymphocytes. The cytotoxicity was time- and dose-dependent. Bacteriocidal activity was also shown by this compound toward Escherichia coli and Staphylococcus aureus.
Mustaffa Musa, Nordin H. Lajis, Zurinah Mahmud, Norhayati Ismail   +3 more
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Psychotria Genus

2016
Abstract Natural products have been used by humankind for thousands of years in applications such as pigments, flavorings, and drugs. Since antiquity, the use of natural products has been the best or the only alternative adopted by many people worldwide in the treatment of several diseases.
M. G. de Carvalho, A.R. de Carvalho, Ivo José Curcino Vieira, Raimundo Braz-Filho, Raimundo Braz-Filho   +4 more
openaire   +2 more sources

Psychotria grandistipula Merrill 1923

2018
Psychotria grandistipula Merrill (1923: 42) Type (lectotype, designated here): MALAYSIA. Sabah: Sandakan and vicinity, Sep-Dec 1920, M. Ramos 1194 (BM barcode BM000945545; isolectotypes K barcode K000777202, US barcode US 00731131).
Turner, I. M., Kumar, V. S.
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Pyrrolidinoindoline Alkaloids from Psychotria oleoides and Psychotria lyciiflora

Journal of Natural Products, 1999
The chemical study of two Rubiaceae from New Caledonia, Psychotria lyciiflora and Psychotria oleoides, led to the isolation of several pyrrolidinoindoline alkaloids. Two dimers, the known meso-chimonanthine (9) and the new Nb-desmethyl-meso-chimonanthine (5), and a known trimer, hodgkinsine (1), have been isolated from P. lyciiflora.
Laurent Serani, Olivier Laprévote, Marie-Thérèse Martin, Valérie Jannic, Thierry Sevenet, Pierre Potier, Françoise Guéritte   +6 more
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Psychotria (Rubiaceae) in the Marquesas islands

1939
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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Psychotria chartacea Craib 1932

2018
1. Psychotria chartacea Craib (1932: 477). Type (lectotype, designated here):— THAILAND. Satul: Kao Keo Range 1600 m, 12 Mar 1928, A. F. G. Kerr 14504 (K barcode K 000777255). Specimens examined: — PENINSULAR MALAYSIA. Kedah: South facing slope of Bukit Perak, Kedah, alt. 1500’, 27 Nov 1969, B.
Turner, I. M., Kumar, V. S.
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Biochemical responses in leaf tissues of alkaloid producing Psychotria brachyceras under multiple stresses

Journal of plant research, 2023
Nicolás de Palma, A. C. Yendo, J. Vilasboa, D. Chacon, A. Fett-Neto   +4 more
semanticscholar   +1 more source

A Note on Psychotria (Rubiaceae) in Papuasia

Kew Bulletin, 2004
Psychotria lolokiensis S. Moore, J. Bot. 67: 49 (1929). Type: Haga, Loloki R., Central Division, Papua, Brass 898 (lectotype, A; isolectotypes, BM, K). Psychotria bracteosa Valeton in Lorentz, Nova Guinea 8: 490 (1911), non R bracteosa Hiern (Fl. Trop. Afr. 3: 207. 1877) [= Peripeplus bracteosus (Hiern) E. Petit, Bull. Jard. Bot. Etat 34: 23.
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Psychotria leucocarpa Blume 1826

2018
Published as part of Turner, I. M. & Kumar, V. S., 2018, Flora of Singapore precursors, 4. A summary of scandent Psychotria (Rubiaceae) in Singapore and Peninsular Malaysia, pp.
Turner, I. M., Kumar, V. S.
openaire   +1 more source