Results 121 to 130 of about 1,356 (139)

Cytological Studies on Monnina

Feddes Repertorium, 1967
AbstractThree species of Monnina have been studied cytologically for the first time. The following chromosome numbers were found, M. brachystachya n = 9 and 2n = 18; M. dictyocarpa 2n = 40; M. rusbyi n = 10 and 2n = 20. Evolutionary trends in the genus are discussed.
K. Larsen
semanticscholar   +2 more sources

Biphenyls and a xanthone from Monnina sylvatica

Phytochemistry, 1992
Abstract Two novel biphenyls, 3′-hydroxy-4′,5-dimethoxy-3,4-methylenedioxybiphenyl and 3′,4′,5-trimethoxy-3,4-methylenedioxybiphenyl, and a known xanthone were isolated from the roots of Monnina sylvatica . The structures of the isolates were established by spectroscopic methods (UV, mass spewometry, 1 H and 13 CNMR, including homonuclear NOE ...
A. Bashir, M. Hamburger, Mahabir P. Gupta, P. Solis, K. Hostettmann   +4 more
semanticscholar   +2 more sources

A Revision of the Venezuelan species of Monnina

Brittonia, 2008
In continuation of his study of the genus Monnina (Polygalaceae), the writer has examined all the readily available Venezuelan specimens of it in several American herbaria, and the present paper summarizes what is known of the genus in Venezuela. On the basis of the material seen, there are ten species of the genus in this country, a somewhat smaller ...
R. Ferreyra
semanticscholar   +2 more sources

Isolation and structural characterization of glycosides from an anti-angiogenic extract of Monnina obtusifolia H.B.K.

Fitoterapia, 2011
Angiogenesis, the growth of new blood vessels from the pre-existing vasculature is of physiological and pathological importance. Substantial data over the last decade has implicated uncontrolled angiogenesis with various pathological states. Vascular endothelial growth factors (VEGFs) play a critical role in its regulation, and have become one of the ...
L. Lepore, N. Malafronte, Fausto Bedoya Condero, M. Gualtieri, S. Abdo, F. Dal Piaz, N. de Tommasi   +6 more
semanticscholar   +4 more sources

A Revision of Monnina Subg. Pterocarya (Polygalaceae) in Northwestern South America

Annals of the Missouri Botanical Garden, 1993
Three subgenera are currently recognized in the genus Monnina, which consists of approximately 175 species. This paper treats the systematics of Monnina subg. Pterocarya in northwestern South America. The subgenus is a naturally coherent taxon characterized by dry, samaroid fruits. It consists of ca.
B. Eriksen
semanticscholar   +2 more sources

Species of Monnina with names first published by Bonpland in Hebeandra (Polygalaceae)

TAXON, 1996
SummaryEriksen, B.: Species of Monnina with names first published by Bonpland in Hebeandra (Polygalaceae). – Taxon 45: 631‐640. 1996. – ISSN 0040‐0262.Due to a misunderstanding new species of Monnina collected by Humboldt and Bonpland were described twice and under different generic names. In 1808 Bonpland described the genus Hebeandra to accomodate 16
B. Eriksen
semanticscholar   +2 more sources

(S)‐13‐HYDROXY‐CIS‐9, TRANS‐11‐OCTADECADIENSAEURE‐LACTON, EINE 14GLIEDRIGE RINGVERBINDUNG AUS MONNINA‐EMARGINATA‐SAMENOEL

Chemischer Informationsdienst. Organische Chemie, 1970
AbstractAus obiger Spezies konnte das makrocyclische Lacton (I) isoliert werden, das bei der katalytischen Hydrierung zu (II) gesättigt wird.
B. Phillips, C. R. Smith, L. W. Tjarks
semanticscholar   +2 more sources

Antifungal Biphenyls from Monnina sylvatica

Planta Medica, 1991
A. Bashir1, M. Hamburger1, Lila Rahalison1, Michel Monod2, M. Gupta3, P. Solis3, K. Hostettmann1   +6 more
semanticscholar   +3 more sources

NECTÁRIOS ESTIPULARES EM Monnina exalata A.W. BENN (POLYGALACEAE) [PDF]

, 2017
Nodal glands are found in one third of the Polygalaceae genera and have valuable taxonomic, ecological and evolutionary significance. In Brazil, they occur in five of the eleven genera already registered The origin of the glands has been the subject of ...
Joana Patrícia Pantoja Serrão Filgueira, D. Demarco, J. F. Pastore, Ana Cristia Aguiar-Dias   +3 more
semanticscholar   +4 more sources

Monnina goiana (Polygalaceae), a Well-Known but Misidentified Brazilian Species

Systematic Botany, 2013
Alina Freire-Fierro, J. F. Pastore
semanticscholar   +2 more sources