VOLUME XLVIII NUMBER 3 
BOTANICAL GAZETTE 
4 SEPTEMBER 1909 
PRELIMINARY ACCOUNT OF THE OVULE, GAMETO- 
_ PHYTES, AND EMBRYO OF WIDDRINGTONIA 
CUPRESSOIDES 
W. T. SAXTON 
(WITH PLATE XI AND THREE FIGURES) 
= INTRODUCTION 
) 4 The genus Widdringtonia contains about six species of trees in 
eq uatorial and south Africa and Madagascar. A plant from tropical 
Africa figured by GorBeL (16) and by EICHLER in ENGLER and 
PRANTL (12) as Callitris quadrivalvis is probably also very closely 
ted to Widdringtonia, but differs in the much smaller number 
Of ovules and also to some extent in the foliage, and was separated 
from that genus by Masters (26) as Tetraclinis articulata, I have 
hot had an opportunity to examine this plant. : 
a The genus Callitris has unfortunately been repeatedly confused 
with Widdringtonia, and the species of the latter are included under 
the former genus by BENTHAM and Hooker (2), EICHLER (12), 
JACKSON (17), BoLus and WoLLEy-Dop (3), and MARLoTH (25). 
‘Widdringtonia was clearly distinguished as a genus, however, by 
ENDucHer (13), and is recognized by such authorities as MASTERS 
(26, 27) and RENDLE (30), as well as by Sum (34) and MAqeEN (24), 
‘Me chief authorities on the forest floras of South Africa and Aus- 
ahs lia respectively. The two genera differ widely in cones and foliage, 
“4nd while Widdringtonia (excluding fossil species) is restricted to 
peuth and central Africa and Madagascar, Callitris is as rigidly 
‘Festricted to the Australian region. I have been fortunate in having 
'® 800d °pportunity to study several species of both genera growing 
= 
F 
a the Government Plantations at Tokai, the majority of the trees 
161 
