96 



* 

 by its short and smoother heads. The plants from Kerrville were always 



erect. 



April 24 (1649); type locality, Mexico. 

 Plantago Virginica L. Sp. PL 113 (1753). 



A rather peculiar form of this species was collected in the shell de- 

 posit at Corpus Christi, and along the railroad embankments. The 

 plants are small, prostrate, with a very short scape ; leaves rather thick, 

 with distant, sharp teeth. 



March 8 (1410); type locality, Virginia. 



RUBIACEAE. 



HOUSTONIA L: Sp. PL 105 (1753). 

 Houstonia angustifolia Michx. Fl. Bor. Am. i: 85 (1803). 



Oldenlandia angustifolia A. Gray, PL Wright. 2: 68 (1853). 

 Abundant at Kerrville from the lowest elevations to about 1800 feet, 

 but not found on the upper slopes and summits of the hills. 

 April 27 (1661); type locality, "in submaritimis Florida." 



Houstonia salina n. sp. 



(PLATE 9.) 



Prostrate, from an apparently perennial root ; stems usually about four 

 inches in length, sometimes six or eight inches, cymosely branched, 

 more or less winged, glabrous; leaves sessile, thick, oblong, slightly 

 narrowed at each end, acutish, the margins rolled in on the under 

 side, glabrous; stipules more or less fimbriate; peduncles usually 

 longer than the leaves just beneath them ; pedicels short, two or 

 three flowered, calyx- teeth triangular-ovate or ovate-lanceolate, short; 

 flowers funnel-form, about the size of those of H. angustifolia, 

 usually dense, white or pinkish ; inner face of the corolla lobes pu- 

 berulent or glandular, especially on the margins, the throat pubes- 

 cent ; pod one- fourth free. 

 This species, in some respects resembling H. angustifolia, is yet very 



different from it in both habit and habitat, and in several other respects. 



Found only in the shell deposit along the beach at Corpus Christi, 



growing in prostrate tufts. 

 May 31 (1812). 



CEPHALANTHUS L. Sp. PL 95 (1753). 

 Cephalanthus occidentalis L. Sp. PL 95 (1753). 



