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Descriptive Flora 



Buddleia racemosa Torr. 



Shrubby plants with small, ball-like clusters of incon- 

 spicuous, white or yellowish flowers growing in pairs along the 

 ends of the many branches and similar to Laphamia lindheimeri 

 in the habit of growing out of cracks and crevices of vertical 

 limestone walls. Leaves simple, opposite. Blades 1 to 2" long, 

 ovate-oblong to lanceolate, coarsely and bluntly toothed, green 

 above, paler and veiny below. Calyx small, whitish, 4-lobed, 

 scurfy. Corolla white or yellowish, minute, 4-lobed. Stamens 4 

 or 5, inconspicuous. May to fall. 



Polypremum procumbens L. 



Low, tufted plants, 2 to 8" high, with repeated forked 

 branching, wiry, 4-angled stems, small, opposite, narrow leaves 

 and small, white flowers, solitary and sessile in the forks of the 

 branchlets or in the axils of the uppermost leaves. Leaf-blades 

 linear, 1" or less long, sessile, the margins often rolled back. 

 Corolla white, 4 or 5-lobed, about across. Calyx lobes 4 or 5, 

 linear, exceeding the corolla. Capsules very small, 2-lobed, con- 

 taining many seeds. March to July. In sandy soil to the south 

 of San Antonio, also, rarely in stony, dry creek bottoms of the 

 Edwards Plateau. 



GENTIANACEAE. Gentian Family. 



JErytliraea calycosa Buckl. Centaury. Grass-pinks. 



Star Flower. 



This rosy gentian is an erect plant, 4 to 10 inches high, with 

 repeated forked branching, opposite leaves, and starry, deep 

 pink or true purple flowers about y<£ across. Leaves simple, 

 opposite. Blades linear to oblong, y 2 to 1 inch long. Flowers 

 in the forks of the branches or in the axils of the upper leaves. 

 Petals 5, joined at base into a narrow tube. Stamens 5, with 

 spirally twisting anthers. A very pretty plant growing singly 

 or in small patches in moist fields, along the road or in a bit of 

 rich soil on limestone hills and hillsides of the Edwards Plateau. 



