72 PLANTS WKIGHTIAN^. Y. 



Oct. — Stems 3 or 4 inches high. Leaves only 4 to 6 lines long ; the flowers also 

 proportionally small. Evidently, however, only a reduced form of the foregoing. 



f (E. (Salpingia) Hartwegi, Benth. PI. Hartw. p. 1. On the Eio Grande, Tex- 

 as, and in mountain valleys east of El Paso ; Aug. Abundant in the collection of 

 1851. — Flowers as large as those of Hartweg's plant (the petals from three fourths 

 of an inch to an inch long ; calyx-tube about an inch and a half long) ; the stems 

 more elongated and sufFruticose, from a span to a foot high, erect. The specimens 

 pass into 



198. CE. Hartwegi, var. caulibus elongatis diffusis; foliis lanceolato-linearibus, 

 1-3 lin. latis. (Prairies on the Sabinal ; June.) And this in turn apparently 

 passes into (E. Fendleri, with oblong-lanceolate leaves, abundantly gathered in the 

 collection of 1851, indicating a species of as diverse forms as (E. serrulata. 



J (E. (Salpingia) Lavandulae folia, Torr. 8c Gray, Fl. 1. p. 501 ; Hook. Lond. 

 Jour. Bot. 6. p. 223. Between Western Texas and El Paso; coll. of 1851; in 

 beautiful floAvering specimens. — The fasciculate-clustered erect stems are from two 

 or three inches to a span high ; and the hoary leaves (of the hue of those of lav- 

 ender) are much crowded, often fascicled, and with revolute margins. The petals 

 are smaller than in (E. Hartwegi, from 6 to 8 lines in length. 



196. (E. LAVANDUL^roLiA, var. caulibus spithamseis et ultra ; foliis glabratis. — 

 Prairies of Live Oak Creek, Western Texas ; June. " Plant from 6 to 12 

 inches high." Tends to connect (E. lavandulsefolia with (E. Hartwegi. 



199. (E. (Salpingia) Greggii, Gray, PI. Fendl. p. 4:6, adnot. ; var. pubescens: 

 pilis mollibus patentibus villosa. — Dry hills beyond the Pecos ; Aug. — Stems 

 woody, rather stout, a span to a foot high. Leaves oblong, 2-4 lines long. Calyx- 

 tube 9-15 lines long. Petals 4-6 lines long. Capsules hairy, 4-6 lines long, 

 cylindraceous, thickish. 



200. LuDwiGiA NATANS, Ell. Sk. 1. p. 581 ; Gray, PL Lindh. 2. p. 190. In the 

 Leona and San Felipe ; July, Aug. 



201. Proserpinaca palustris, Linn. In the Eio Nueces ; June. 



202. Myriophyllum heterophyllum, Michx. ; var. foliis emersis parvulis. — Tur- 

 key Creek, Texas ; June. 



203. Gaura sinuata, Nutt. in DC. Prodr. 3. p. 44. Prairies of Live Oak 

 Creek and the San Pedro River ; June, July. 



204. G. suFFULTA, Engelm. in PI. Lindh. 2. p. 190. Hills along the Rio Frio, 

 Texas ; June. — The fruit, as in Lindheimer's specimens, is either acute or obtuse, 

 usually the latter when fully ripe, and the sides are mostly even. No. 82 of 

 Drummond's third Texan collection (from San Felipe) is the same species. The 

 flowers are tetramerous and the fruit tetraquetrous, in the specimens of the Hook- 

 erian herbarium ; but in those of Mr. Webb's herbarium I observed both tetra- 

 quetrous and triquetrous fruit, even on the same specimen, and it is, as I sus- 

 pected, the plant referred to G. tripetala by Spach ; of which our plant is, I suppose, 

 only a pretty constantly tetramerous variety. It has been raised in the Jardin des 

 Plantes, from seeds gathered by M. Trecul. 



205. G. tripetala, Cav. Ic. 4. p. 66. t. 396. Prairies along the Rio Brazos ; 



