A. PENTANDRA. 297 



Muertos, Porto Rico, Britton, Cornell, and Brovm 5036 (NY, US) ; Pedro Bluff, Jamaica, Harris 9932 (NY, 

 US); near Willemstad, Curasao, Britton and Shajer 2926 (NY, US). 



14. A- PUEBLENSis Standley, 1. c, 56, 1916. — The same as A. pentandra muricata, but a form with unap- 

 pendaged bracts (as in minor variation 9, A. glomerata Watson) and the staminate glomerules in naked terminal 

 spikes. The leaves are described as entire, but this varies in the type collection (although not in the type 

 specimen) as pointed out by Macbride (Contr. Gray Herb. 53:10, 1918). A duphcate of the type at the 

 University of Cahfornia has leaves mostly entire, but some with a few minute dentations, and the staminate 

 inflorescenses are 1 to 2 cm. long. Type, near Tehuacan, Puebla, Pringle 8577 (US). 



15. A. TAMPiCENsis Standley, 1. c. — There are no satisfactory characters upon which to separate this from 

 A . pentandra typica. The leaves are entire, but the single collection thus far made consists only of the ends 

 of the branches and the principal leaves are therefore unknown. In any event, this feature is much too variable 

 in the group to be of taxonomic value. The staminate glomerules are in elongated terminal spikes and panicles, 

 as is common in pentandra. The fruiting bracts are only 2.5 to 3 mm. long, not crested but faintly reticulated 

 on the faces. The bracts are therefore undersized for typica, and in this respect the form is closer to subspecies 

 muricata. Type, vicinity of Tampico, Tamaulipas, Palmer 332 (US). 



16. A. TEXANA Watson, Proc. Am. Acad. 9 : 113, 1874.— A little-known form from southern Texas which may 

 be referred to A. pentandra typica until differentiating characters can be found. Geographically it belongs 

 between typica and muricata, but the bracts are much too large for the latter, 3 to 3.5 mm. long by 4 to 4.5 

 mm. broad in the type, which, however, was grown in the botanical garden at Cambridge, Massachusetts, 

 from Texas seed. All of the few collections since made are from within 250 km. of the coast of the Gulf of 

 Mexico. These localities may therefore represent the western limits of typica, which ranges thence both north 

 and south along the Gulf. A. texana can not be separated from typica on the basis of its entire leaves as pro- 

 posed by Standley (N. Am. Fl. 21 ; 37, 1916), since these sometimes are sparingly dentate, as originally described 

 by Watson and, moreover, typical pentandra varies in the West Indies to forms in which the leaves are nearly 

 all entire. In addition to the type, the following belong here: Guadalupe, southwest of San Antonio, Texas, 

 Palmer 1168 (Gr, US); Corpus Christi Bay, Texas, Palmer 1159 (Gr, US); Laredo, Texas, in sandy soil, Rever- 

 chon 3682 (Gr). An earlier name for this variation is given under No. 23. 



17. A. TUBERCULATA Coulter, Contr. U. S. Nat. Herb. 2 : 368, 1894.— Based upon Obione elegans tvberculosa, 

 which see in this list. 



18. A. wARDi Standley, 1. c, 56, 1916.— The types are nearly leafless plants with no characters to differ- 

 entiate them from typical A. pentandra, except the absence of appendages on the faces of the fruiting bracts. 

 These bracts were described as only 2 to 2.5 mm. long and longer than broad. Many of the mature ones of 

 the type are fully 3 mm. long. The absence of the usually broad herbaceous margin is responsible for this 

 small size. The faces are strongly reticulated, this indicating the close relationship with subspecies typica 

 and arenaria. The root is annual and the few remaining leaves are entire. Type, Galveston, Texas, Sep- 

 tember 16, 1877, Ward (US). 



19. AxYBis PENTANDRA Jacquin, Sel. Stirp. Am. 244, 17G3.—Atriplex pentandra typica. The original 

 specimen is illustrated in figure 40. 



20. Obione arenahia Moquin, Chenop. Enum. 71, 1840.—^. pentandra arenaria. 



21. O. CRiSPA Moquin, 1. c, 73, 1840.— Referred to A. pentandra confinis, although both leaves and bracts 

 are much smaller in true crispa. According to Moquin, the leaves in the type, which came from Haiti, are 

 only 0.4 to 0.6 cm. long, 0.1 to 0.2 cm. wide, whitish farinose on both faces, and acutely dentate, while the 

 bracts are only about 2 mm. long. This very smaD-leaved form is represented by plants from Eastern Cay, 

 Turks Island, Bahamas {Millspaugh 9369, NY), in which, however, the fruiting bracts are slightly over 3 mm. 

 long. Possibly the type specimen was immature, which would account for the small size of the bracts. The 

 name crispa is not here taken up because of the tenable Atriplex crispa Dietrich (Syn. PI. 5:536, 1852) of Asia. 



22. O. CRISTATA Moquin, 1. c. — Based upon Atriplex crislata, which see. 



23. O. elegans var.? tuberculosa Torrey, Bot. Mex. Bound. 183, 1859.— A form later described as 

 Atriplex texana Watson (No. 16 of this list). 



24. O.? KUNTHIANA Moquin, 1. c, 72, 1840. — A. pentandra muricata. 



25. 0.? MURICATA Moquin, in De CandoUe, Prodr. 13«:109, 1849.— vl. pentandra muricata. 



