166 APETALAE 
Sub-Class I. CHORIPETALAE 
Plants With Free Petals or With no Apparent Petals 
Group I. APETALAE. Flowers without petals 
Flowers without a corolla, often with no floral envelope, or with 
a very simple one. The group includes all the plants of the Order 
Juliflorae, the Order Hysterophytes and all but two Families in 
the Order Centrospermae. The special characters are shown in 
the descriptions of the Orders and Families. 
Order I—JULIFLORALES. Catkin-Bearing Trees and 
Herbs 
Flowers individually quite inconspicuous, wanting the corolla 
and most frequently the calyx except in a rudimentary form. 
Flowers grouped in large numbers in catkin-like inflorescence or 
in fascicles. Stamens opposite to the divisions of the calyx, when 
a calyx is present. 
The Order Juliflorales is divided into three Sub-Orders: 
1st. Sub-Order, of which we have but a single species Piperales 
2d. Sub-Order, the true catkin bearers, all trees and 
shrubsa-uiese ew © te oe i ak Ce eee 
3d. Sub-Order, the nettle group, all herbs except 
Ulta? iste 2 + OR re ee 
Sus-Orper I.—PIPERALES. Prirrerapes 
Our only species an herb with long nodding spikes of flowers 
which bear both stamens and pistils, differing in this from cat- 
kins. The flowers have neither calyx nor corolla. Fruit a berry. 
Famity I.—SAURURACEAE. Lizarp Tait FAMILY 
The characters of the family are included in the description of 
those of the Genus Saururus, 
