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IOWA ACADEMY OF SCIENCE Vor. XXIX, 1922 
generally polyhedric, with five obtuse angles, often deeply fur- 
rowed. The tendrils are ordinarily rudimentary or not at all 
present in those varieties with short and not running stems. 
Leaves with five, quite pointed and often quite developed lobes, 
oftentimes divided into secondary lobes, more or less deeply 
separated by the sinus. The leaves are generally stiff. Quite 
frequently the leaves show white triangular spots at the angles of 
the veins. The leaf, petioles and the underside of the leaves are 
armed with stiff or prickly hairs. The peduncles of the male and 
the female flowers are more or less prismatic and obtusely 5- 
angled. The calyx of the male flowers is quite characteristic. Its 
tube is noticeably 5-sided, its divisions are generally fleshy and 
awl-shaped. The corolla is yellow with a little orange. The 
lobes spread out to some extent. The fruit is extremely variable 
in form, the dominant type being a reversed ovoid, more or less 
