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A Ristolochia Convolvulacea

cm and leaves

A RISTOLOCHIA CONVOLVULACEA.

Perennial, slender, bristly-pubescent throughout. Stems erect or decumbent, dm. long, angled, slightly flexuous, simple, or rarely branched below ; leaves thinnish, becoming firm at ma turity, broadly ovate to oval, 2-8 cm. long, short-acuminate or rarely acute, ciliate, deeply cordate at the base, short-petioled ; petioles .5-1.5 cm. long, hirsute ; peduncles slender, 1-2-flowered, flexuous, angled ; calyx densely hirsute, the tube .5-1 cm. long, the limb 6-8 mm. broad, scarcely lobed ; capsule subglobose, 6-7 mm. in diameter, pubescent.

In woods, " . . . Columbus, Georgia. Grows from Athens to near this place" (Boykin).

Dr. Boykin noticed the differences between Aristo/ochier Scow %arm and the one here described as new, many years ago. Besides

observing the plant in the field, he cultivated it in his garden, and sent both native and cultivated specimens to Dr. Torrey in whose herbarium they are preserved.

Aristolochia convokulacca can readily be distinguished from A.

Serpentaria by eithe. the pubescence or the foliage. In place of the soft pilose hairs characteristic of Aristo/ochia Scipentaria, we find a bristly-hirsute pubescence on all parts of the plant. The leaves are much broader in proportion to their length than those of its relative, resembling closely those of some Convolvulaceae, whence the name.