128 tNITED STATES AND MEXICAN BOONDARY. 



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of the cell ; near the last^ and L. hispida^ Kimth.^ "but the latter species has serrato-creaate bal- 

 late-rugous leaves^ and a juicy fruit. 



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Laxtana ODORATA5 Linn ; Scliaiier^ I, c, p. 603. Var. Beklandieri : foliis rhomhoiJco-oblongis 

 acafciusculis supra scabriusculis subtus pallidioribus vix canescentibus. Ramos, Mexico, Tltur- 

 ha\ (No. 3184, Berlandier.) Plant 1-3 feet high, slender. Leaves about an inch long. Pe- 

 duncles (in Berlandier's specimens) much longer than the leaves. Fiowors white. 



Laxtana horhida, H. B. K, I. g, p, 211. Var. parviflora, Schaiier^ Z. c. p. 597. Near San 



Antonio, Texas ; Tliurher. Hilis and dry prairies along the Piio Grande, also on the seacoast 



near Indianola ; September — October ; ScJwU. (No. 1511, Wright] Nos. 2111 and 2310, Ber- 



landier.') Banks of the Escondido and near the Painted Caves ; Bigelow. We name this plant 



on the authority of an authentic specimen of Berlandier's, No. 2310, which is certainly the same 

 as ours. It is a shrub 3 or 4 feet high, often quite unarmed, and usually the prickles are sparse 



and extremely short. Flowers yellow, turning to a deep brown. The fruit i.^ about the size of 

 a peppercorn and is juicy when ripe. It may be only a variety of L. Camara. 



ViiRBEXA hastata, Ltuv.; Torr. FL N. York^ 2, p. 51. V. hastata, Lam. Ency. 8, p. 548; 

 ScJiaiter in I)G . Prcdr. 11, p. 545. Near the Copper Mines, June — July ; Bigtlcic. 



Verbena prostrata, R. Br. in Uort. Keia. (ed. 2) 4, p. 41 ; Schauer^ I. c, p, 547. Grassy places 

 near Monterey, California ; Parrij. 



Verbena orncmALis, Linn.] Schaicci^ L c. Rocky places between Van Horn's Wells and 

 Muerto, July; Bigclota. Seashore, near Galveston, Texas, September; Schott. Cafion of Gua- 

 deloupe, Sonora ; E. K. Smith. San Diego, California; Thurher. 



Var. iiirsuta: incano-hirsuta, assurgens, bracteis calycem subasquantibus. Near the Copper 

 Mines, New Mexico, June ; Bigeloio. 

 . Verbena canescexs, IL B. /f. Nov. Gen. & Sp. 2, p. 274, t. 136; Schauer, I. c. V. remota, 



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Berdh. PL Harhv. p. 2U Western Texas, along the Rio Grande, and in the adjoining Mexican 

 States, (Nos. 1496 and 1497, Wright. Nos. 827, 955, 1485, 2054, and 2247, Berlandier. 

 No. 77, (1840,) Lindheimer. No. 594, Ftndler.) Some forms of V. officinalis approach this 



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Fl 



Sa Diego mountains, on the 



Kio Grande, and sandy places, El Paso, etc.; May — October; Bigeloio^ Thurher. (JS 



Wright,) 



Verbena Aubletia, Linn.; Schaiier, I. c, p. 554. V. bipinnatifida_, Schauer^ I. c. Glandu- 

 lariabipinnatifida, Nutt. Trans. Amer. Phil. Soc. (n. ser.) 5, p. 184; common everywhere in 

 Western Texas, New Mexico, extending to Chihuahua and Sonora. (Nos. 1501, 1502, and 1503, 

 Wright.) Flowers throughout the season. We have in vain sought for characters to distinguish 

 the two species here united. They vary in the number and form of the segments of the leaves. 

 The ripe nutlets are the same in both. We know of no plants which, in the wild state, are 



prone to hybridize than the North American species of this genus. Dr. Engelmann has 



more 



(in Silliman's Journal, vol. ?j) m 



hastata, V. urtica}folia, and V. stricta, which he found in the vicinity of St. Louis, Missouri. 



AviCENNiA TOMENTGSA, Jacq.; Schaucv in DC. Prodr. 11, p. 699. Mouth of the Rio Grande, 

 October— November; Schott. Also found, many years ago, at Tampa Bay^ Florida, by i)r. Leaven- 

 worthy and at Key West by the late Mr. Blodgett. 



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