SEXUAL REPRODUCTION IN EPHEDRA NEVADENSIS (EPHEDRACEAE): FURTHER EVIDENCE OF DOUBLE FERTILIZATION IN A NONFLOWERING SEED PLANT
1990 ◽
Vol 77
(12)
◽
pp. 1582-1598
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Keyword(s):
1996 ◽
Vol 83
(6)
◽
pp. 767-780
◽
2001 ◽
Vol 3
(3)
◽
pp. 1-12
◽
Keyword(s):