It is an evergreen climbing undershrub, having whitish green flowers, and grows readily from suckers.    From Wordnik.com.  [The Commercial Products of the Vegetable Kingdom Considered in Their Various Uses to Man and in Their Relation to the Arts and Manufactures; Forming a Practical Treatise & Handbook of Reference for the Colonist, Manufacturer, Merchant, and Consumer, on the Cultivation, Preparation for Shipment, and Commercial Value, &c. of the Various Substances Obtained From Trees and Plants, Entering into the Husbandry of Tropical and Sub-tropical Regions, &c.] Reference

It is an undershrub, the stem of which is compressed and angular below, and armed with prickles at the angles.    From Wordnik.com.  [The Commercial Products of the Vegetable Kingdom Considered in Their Various Uses to Man and in Their Relation to the Arts and Manufactures; Forming a Practical Treatise & Handbook of Reference for the Colonist, Manufacturer, Merchant, and Consumer, on the Cultivation, Preparation for Shipment, and Commercial Value, &c. of the Various Substances Obtained From Trees and Plants, Entering into the Husbandry of Tropical and Sub-tropical Regions, &c.] Reference

I took a botanical account of stock of our domains before the dew was off, and found that the ground-hemlock, or American yew, was the prevailing undershrub.    From Wordnik.com.  [The Atlantic Monthly, Volume 02, No. 08, June 1858] Reference

A barren fragment of undershrub, with opposite fleshy leaves with recurved margins.    From Wordnik.com.  [The Land of Midian — Volume 2] Reference

The indigo plant, SWAINSONA GALEGIFOLIA, is a glabrous perennial, or undershrub, with erect flexuose branches, sometimes under one foot, sometimes ascending, or even climbing, to the height of several feet.    From Wordnik.com.  [The History of Australian Exploration from 1788 to 1888] Reference