74 PLANTS ■WRIGHTIANjE. T. 



•f M. (Bartonia) multiflora, Nutt. PI. Gamh. p. 180 ; Gray, PL Fendl. p. 48. 

 Valley of the Eio Grande near El Paso ; Sept. Also collected by Wislizenus. — 

 Plant (with stems scarcely a foot high) wholly like Nuttall's specimens in the 

 Hookerian herbarium ; the petals in some specimens three fourths of an inch long, 

 as Nuttall describes them (in one from Wislizenus even larger), in others barely 

 half an inch long. The larger pods are from three fourths to half an inch in 

 length, cylindraceous-clavate (as in Nuttall's specimens), while the smaller, even on 

 the very same plant, are " urceolate " or turbinate, and only three or four lines long, 

 like those of No. 214. Mr. Wright has both states in his collection of 1851 ; and 

 Gregg gathered it at Buena Vista. The mere size of the flowers affords no good 

 characters in this genus. 



213. M. (Bartonia) multiflora, var. foliis angustis; floribus minoribus ; cap- 

 sulis plerisque cylindraceo-clavatis. — Mountain valleys, 30 or 40 miles east of the 

 Eio Grande, New Mexico ; Aug. " Flowers light yellow." The specimens are 

 mostly in fruit. 



214. M. (Bartonia) multiflora, var. humilis; foliis angustissimis (lobis rha- 

 chique lineam latis) ; capsulis brevibus urceolatis. — With the preceding'? The 

 specimens wholly in fruit.* 



215. Cevallia sinuata, Lagasca, Nov. Gen. Sf Sp. p. 11. t. 1 ; Torr. 8f Gray, 

 Fl. 1. p. 536, Sf 696; Hook. Ic. PI t. 252; Fenzl, in Denkschr. Regensh. 3. p. 188. 

 t. 4. Hills near the head of the San Felipe, July, and along the Rio Grande, Texas. 

 Also abundantly found by Gregg and Wislizenus in New Mexico and Northern 

 Mexico. 



PASSIFLORACE^. 



216. Passiflora tenuiloba, Engelm. in PI. Lindh. 2. p. 192. Calcareous hills 

 between Zacate Creek and the San Felipe ; also towards the Rio Grande in Texas ; 

 July. Abundant in the coll. of 1851. " Fruit dark purple, the size of a rifle-bul- 

 let." — The leaves are various in different individuals of this remarkable species, 

 or on different parts of the same plant ; but the lateral lobes are always long, nar- 

 row, and divaricate, and the middle one very short. 



* No. 663 of Geyer's Oregon collection, which was inadvertently referred by Hooker [Lond. Jour. 

 Bot. 6. p. 227) to Bartonia micrantha, Hook. Sf Am., and said exactly to accord with an original Califor- 

 nian plant, is not that species, but is only a more leafy form of Mentzelia albicaulis. The filaments are 

 all filiform, the pods elongated-cylindrical and many-seeded. It is likewise in Spalding's Oregon collec- 

 tion, from the same part of the country. I notice that most of the flowers in Geyer's specimens have 

 only ten stamens, while Spalding's has 20 or 30, as in the species generally. The same thing occurs in 

 the nearly-related M. Haenkii (Acrolasia bartonioides, Presl) of Chili ; at least Presl characterizes and 

 figures his plant as decandrous, while I find 15 or 20 in specimens collected by C. Gay (though not so de- 

 scribed in the Flora Chilena). The pods of my specimens of the Chilian plant have as many as twelve 

 or fourteen seeds ; and I find in M. albicaulis also distinct traces of the few small bristles at the apex of 

 the petals from which Presl derived his generic name ; — so that Acrolasia is not to be distinguished, even 

 as a section. Still A. bartonioides is not the same species as M. albicaulis, its pods being oblong-turbinate 

 and only 3 or 4 lines long ; while those of the latter arc slender, half or three quarters of an inch long, 

 and 30 - 40-seeded. 



