Plantcc Lindheimeriana. 151 



branching, a span to a foot high, clothed with a soft spread- 

 ing pubescence. Leaves from 5 to 10 lines long, coriaceous, 

 minutely pubescent but shining, with a prominent midrib, the 

 veinlets conspicuously reticulated on both surfaces. Racemes 

 gradually prolonged so as to bear from 10 to 20 flowers in the 

 course of the season ; the joints of the remarkably zig-zag 

 rachis from one to three lines long. Pedicels shorter than the 

 calyx, 3-bracteate. Upper sepal a little remote from the 

 flower, like a bractlet, ovate-oblong, concave, with the rudi- 

 ment of a gland in its axil. Stamens 8, subdiadelphous. 

 Thegalea of the carina is beardless, and bears a conspicuous, 

 straight spur on the back in place of a crest. The ripe fruit 

 is unknown. The large upper sepal is persistent at the base 

 of the half-grown fruit, after the others have fallen. All the 

 sepals are deciduous in what I take to be P. ovalifolia, DC, 

 which was gathered on the Leona and Rio Grande by Mr. 

 Wright, as well as by Dr. Edwards and Major Eaton at Mon- 

 terey, &c. 



KRAMERIACE^E. 



(13.) Krameria lanceolata, Torr. in Ann. Lye. New 

 York, 2. p. 168 ; Gr. Gen. 111. 2, t. 185, 186. New Braun- 

 fels, among rocks. April, June. "Roots often mere than 

 three feet long." 



violace^:. 



(578.) Ionidium lineare, To/t. in Ann. Lye. New York, 

 2, p. 168 ; Torr. fy Gr. Fl. 1. p. 145 ; Gr. Gen. 111. 1, t. 82. 

 I. stipulaceum, Nutt. in Torr. fy Gr. I. c. Stems much 

 branched from a ligneous perennial root, diffuse, or the 

 branches often erect. Leaves opposite or occasionally alter- 

 nate, entire or remotely serrulate ; the lower varying from 

 lanceolate to oblong or obovate ; the upper linear, obtuse, 

 usually three or four times the length of the stipules. Seeds 

 turning black. — I possess no perfectly authenticated speci- 

 mens of I. stipulaceum, Nutt. ; but I have good reason to 



