External morphological features of a monecious plant of Cannabis sativa L.

Authors

  • Amélia Moema Veiga Lopes Departamento de Biologia, Centro de Ciências Naturais e Exatas - CCNE Universidade Federal de Santa Maria - UFSM, Santa Maria, RS.
  • Vanoli José Xavier Lopes Departamento de Biologia, Centro de Ciências Naturais e Exatas - CCNE Universidade Federal de Santa Maria - UFSM, Santa Maria, RS.

DOI:

https://doi.org/10.5902/2179460X24851

Abstract

The the external morphological features of a monoecious plant Cannabis sativa L. were studied. These features were compared with those of dioecious plant described by CARAUTA (1) and COSTA & JACCOUD (2) and the following conclusions were reached: 1) the monoecious plant presents external characteristics similar to the male dioecious plant; 2) in the monoecious plant do occur, aproximately in the same proportion, flowers with 2 and 3 stigmas, while the dioecious plant normally has 2 stigmas present; 3) in branches on which modified flowers occur, the general aspect of the flowers suggests that the male flowers give origin to female flowers.

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Author Biographies

Amélia Moema Veiga Lopes, Departamento de Biologia, Centro de Ciências Naturais e Exatas - CCNE Universidade Federal de Santa Maria - UFSM, Santa Maria, RS.

Vanoli José Xavier Lopes, Departamento de Biologia, Centro de Ciências Naturais e Exatas - CCNE Universidade Federal de Santa Maria - UFSM, Santa Maria, RS.

References

CARAUTA, J.P.P. Canabáceas. Flora Ilustrada Catarinense. Itajai, Santa Catarina, 1975. l7p.

COSTA, O.de A. & JACCOUD, R.J. de S. Algumas considerações farmacognósticas referentes ao Cannabis sativa L. Rev. Bras. Farm. 48 (1): 3 - 25. 1967.

FOSTER, A.S. Techniques for study of venation patterns in the leaves of Angios perms. Stocklolm, Proc. 7th Int. Congr.: 586-587. 1950.

HAMMOND, C.T. & MAHLBERG, P.G. Morphology of glandular hairs of Cannabis sativa from scanning electron microscopy. Amer. J. Bot. 60 (6): 524 - 528. 1973.

SMALL, E. & CRONQUIST, A. A practical and natural taxonomy for Cannabis. Taxon 25 (4): 405 - 435. 1976.

VALLE, J.R. do. Contribuições antigas, de Garcia da Orta e de Frei Veloso, a propósito do cânhamo ou maconha. Ciência e Cultura, 23 (4): 459 - 463. 1971.

Published

1979-12-10

How to Cite

Lopes, A. M. V., & Lopes, V. J. X. (1979). External morphological features of a monecious plant of Cannabis sativa L. Ciência E Natura, 1(1), 113–120. https://doi.org/10.5902/2179460X24851

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