148 ' UNITED STATES AND MEXICAN BOUNDARY. 



ISTama Jamaicensis^ Linn. Sp. p. 327 ; Clioisy^ I. c, San Antonio, Texas ; TJiurher. Sonora 

 and Chihualiiia ; Scliott^ Parry. It is No. 316 of Driimmond^s 2nd Texan Collection. 



Eriodyctiox CalifornicuMj Benth. Bot. Sulph. p. 35; Choisy in DC. Prodr. 10, p. 185. 

 Wigandia Californica, Hooh. & Am. Bot. Beech, p. 361, t. 88. Borders of the Lower Gila and 

 on the mountains east of San Diego, California ; Major Emory. Near Monterey and in other 

 part^ of California; Parry. A sliruhbj plant, commonly 3-5 feet high. The leaves are 

 variable in breadth and toothing : one of the narrow-leaved forms being E. angustifolium, 

 Nutt. The flowers are rather showy and of a light purplish-blue color. The plant has a strong 

 terebinthine taste, and abounds in a resinous matter which sometimes exudes so copiously from the 

 stalks and leaves that in drying, the specimens stick firmly to each other and to the paper. 

 The natives of California make an infusion of the leaves and use it as a tonic. 



Eeiodyction tomentosum, Benih. I. c. E. crassifolium, Benth. L c. Sandy fields around San 

 Diego, June ; Parry , Thiirher. This is a taller species than the preceding, growing from 6-8, 

 and sometimes even 10 feet high. Like that, it is variable in the form and toothing of the 



leaves, and we have no hesitation in uniting the two species of Bentham here quoted. We 

 have specimens that are intermediate, and Dr. Parry informs me, that he has seen them in 



California passing into each other. 



FOUQUIERIACE^. 



Fouq¥Iekia splendens, Engdm. in Wisliz. N. 3Iex. p. 98; Gray^ PI. Wright. 1, p. 85, dc 2, 

 p. 63. Gravelly hills on the Rio Grande, from El Paso to the great canon 60 miles below, 



April — May. 



CONYOLVULACE^. 



TTS, Engelm 



Phil. Soc. (n. ser.) 



hastatus, Nutt. in Trans. Amer^ 

 Emory's Pep. p. 149. Hillsides 



and ravines ; common in western Texas and New Mexico, along the Rio Grande ; flowering 

 through the season. Canon of Guadalupe, Sonora; Oapt. E. K. Smith. Near the next species. 



Convolvulus Hermanni.^, Herit.; Choisy^ I. c. River banks and ravines ; Presidio Falls, Rio 

 Grande to Eagle Pass, March. — November ; Schott, Bigelow. 



Convolvulus Californicus, Choisy in DC. Prodr. 9, p. 405. Hillsides near Monterey, Cali- 

 fornia, Maj ; Parry, 



QuAMOCLiT cocciNEA, Moencli; Choisy, I. c. p. 335. Magdalena in Sonora, Thurler. Copper 

 Mines, August, (fl & fruit); Bigelow, {Wright, No. 1611.) The leaves in Dr. Bigelow's 

 specimens are deeply 3-parted ; the lateral divisions more or less angularly lobed at the base. 



Caltstegia sepium, B. Br. Prodr. p. 483 ; Choisy, I. c. p. 433. Near San Diego, California, 

 May ; Thurher. C. Maximiliana, Nees^ in Maximil. Trav. seems to be only a variety of this species. 



Calystegia Soldanella, B. Br. Prodr. p. 483; Choisy j I. c. Seabeach, Monterey and other 

 places along the coast of California. 



Batatus littoealis, Choisy in DC. Prodr. 9, p. 337. Convolvulus obtusilobus, Michx. Fl. 

 1, p. 139. Mouth of the Rio Grande and coast of the Gulf of Mexico, May ; Schott. 



Tpom(ea paistburata, 3Iey.; Choisy^ I. c. p. 381. Wet places, near running water; western 

 Texas, Oct.; (fl. & fr.); Bigeloiu. Leaves all entire and heart-shaped. Sepals varying from 



oblong to ovate, and from very obtuse to rather acute and mucronate. 



Ipomcea tenuiloba (n. sp.): glabra; caule volubili ; foliis petiolatis pedatis lobis 5-7 fili- 



formibus integris ; pedunculis unifloris petiolo sub^equalibus ; sepalis oblongo-lanceolatis acutis, 



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