ARISTOLOGHIAGE^-BIRTHWORT FAMILY 



PIPE VINE. DUTCHMAN'S PIPE 



AHstolbchia macrophylla. AristoUchia sipho. 



Arislolochia is the ancient name; supposed to refer to medicinal 

 properties. 



A perennial, climbing, woody 

 vine, found in rich woods from 

 Pennsylvania to Minnesota and 

 south to Georgia and Kansas; 

 cultivated as a trellis and porch 

 cover. May, June. 



Pipe Vine. Arislolochia macrophylla 



Stem. — ^Twining, nearly gla- 

 brous. 



Leaves. — Alternate, bright- 

 green, large, heart-shaped, or 

 reniform, margin entire, apex 

 acute. 



Flowers. — Solitary on long 

 peduncles, brownish. 



Calyx. — An inflated, curved, 

 yellowish-green, veiny tube, en- 

 larged above the ovary, con- 

 tracted at the throat; the flat border brownish -purple and obscurely 

 three-lobed. 



Corolla. — Wanting. 



Stamens. — Six anthers and no filaments, in united pairs under the 

 three lobes of the short, thick stigma. 



Fruit. — A many-seeded, six-lobed capsule. 



This is one of our best hardy climbing vines for screen or shade, 

 as its great leaves overlap each other and quickly form a leafy 

 wall. In rich soil along the Alleghany Mountains and on the 



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