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Cypress (Tavodinm distichuin), Sequoia, Cryptomeria, and the 
Umbrella Pine (Sciadopitys verticillata). 
5. The Cypress Family (Cupressaceae) includes Arborvitae 
(Thuja), Japanese Cypress (Chamaecyparis), and Juniper. Juni- 
per (Juniperus) has fleshy cone-scales, fused to appear like a berry. 
The Gnetales have rudimentary floral envelopes, and the group 
is somewhat intermediate between Gymnosperms and Angiosperms. 
Two of the three genera are in the Botanic Garden: The tropical 
Gnetum gnemon in the Conservatories; and the Asiatic Ephedra 
distachya in the Japanese Garden. In all the Gnetales the embryo 
has two cotyledons. 
Angiosperms (Plants with Flowers) 
Flowering plants are called “ Angiosperms ” from the fact that 
their seeds are enclosed (in an ovary). ‘There are two great groups 
of Flowering Plants, namely, those, like the bean, whose embryo 
has two seed-leaves or cotyledons (Dicotyledons) ; and those, like 
the corn, whose embryo has only one seed-leaf (Zonocotyledons). 
By far the larger part of the Systematic Section is occupied by the 
Angiosperms. 
Dicotyledons without Petals (Apetalous ) 
Southwestward from the Gymnosperms, on the west side of the 
Brook, are Angiospermous trees having flowers without floral en- 
velopes (calyx and corolla), and usually borne in cone-like catkins 
or aments (the so-called ament-bearers or Amentiferac). In the 
Hickory, Oak, Chestnut, and others only the staminate flowers are 
in catkins. Most of these forms are wind-pollinated, including the 
Birches, Alders, and others, of the Birch Family (Betulaceae). 
Here, also, are the Beeches, Oaks, and Chestnuts, of the Beech 
Family (Fagaceae); the Walnuts and Hickories, of the Walnut 
Family (Juglandaceae) ; and the Elms (Elm Family, Ulmaceae). 
South of the east-west walk, leading to the White Oak Circle, 
are the Mulberries and Paper-Mulberry, wind-pollinated trees of 
the Mulberry Family (J/oraceac), and the insect-pollinated Fig of 
— 
the same Family. 
~ 
The Willows and Poplars (Willow Family, Salicaceae) are 
