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PHARMACEUTICAL BOTANY 
and corolla. The petal in front of stamen and stigma, which differs 
from the others in form and secretes nectar, is called the Labellum. 
Examples: Cypripedium and other Orchids. 
When calyx and corolla each consist of three parts closely resem- 
bling each other in form and color, as in the Tulip and Lily, the 
flower is called Liliaceous. 
The Ligulate or Strap-shaped corolla is nearly confined to the 
family Compositse. It is usually tubular at the base, the remainder 
resembling a single petal. Examples : Marigold, and Arnica Flowers. 
Labiate, or Bilabiate, having two lips, the upper composed of two 
petals, the lower one of three. This form of corolla gives the name 
to the Labiatce, while in the family Leguminosoe this arrangement is 
sometimes reversed. The corolla may be either ringent, or gaping, 
as in Sage, or personate, when the throat is nearly closed by a projec- 
tion of the lower lip, as in Snapdragon. 
Rotate, Wheel-shaped, when the tube is short and the divisions of 
the limb radiate from it like the spokes of a wheel. Example: The 
Potato blossom. 
Crateriform, Saucer-shaped, like the last, except that the margin 
is turned upward or cupped. Example: Kalmia latifolia (Mt. 
Laurel). 
Hypocrateriform, or Salver-shaped (more correctly, hypocrateri- 
morphous), when the tube is long and slender, as in Phlox or Trail- 
ing Arbutus and abruptly expands into a flat limb. The name is 
derived from that of the ancient Salver, or hypocraterium with the 
stem or handle beneath. 
When of nearly cylindrical form, the corolla is Tubular, as in the 
Honeysuckle, and Stramonium. 
Funnel-form (Infundibuliform), such as the corolla of the common 
Morning Glory, a tube gradually enlarging from the base upward 
into an expanded border or limb. 
Campanulate, or Bell-shaped, a tube whose length is not more 
than twice the breadth, and which expands gradually from base to 
apex. Examples: Canterbury Bell, Harebell. 
Urceolate, or urn-shaped, when the tube is globose in shape and 
the limb at right angles to its axis, as in the official Uva Ursi, Chima- 
phila and Gaultheria. 
