TABLE OF CONTENTS 
PART 1 
Introduction 3... by wn a Ue eo ¿ib e i 
Descriptive: Vaillantia hispida موم موم م۰۰۰۰‎ 8 
Explanation of plates......... codice ماخ‎ eee eee 23 
PART 2 
Further description of genera. 
CA 27 
WA 32 
O E ETT ULAIL. .. c E 34 
DIEN. qnx eene re ee ecc i ee 36 
ais AC c ks RA 43 | 
CHE تپ‎ Ces A ws ru vu von i E 44 
AROS VOTAN. ee ence keene Her et tie 48 
IMIR ll bods وی‎ UU VR des n AN 52 
a PUG sorrise ee- r ourer oru e 54 
LAS ei d ME 56 
Summary and CONCLUSIONS 4... err nr ma 59 
The tetrad and embryo-sac itoses rer et! 66 
Summary and. conclusions... وان وی‎ seo rH S 82 
The behavior of the pollen tube 
Diodia teres and Richardsonia ۵6/0506. + '"" 88 
A A nmt 97 
Késults asd conclusions مر‎ O 100 
DO cr ÓN 103 
Explanation of plates 105 
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"oO RIN K RR M B4 MM b.e * Bo.» o * b ue "o t "T 
(112) 
