163 UNITED STATES AND MEXICAN BOUNDARY. 



Poir.y (Adelia p'^rulosa, Michx.) which much resembles this species, differs in its entire ohtuse 

 leaveS; narrrovvlj evolute on the margin. 



FoRESTKRA SPH^EROCAEPA (n. s]^.): foliis ad apicem ramulorum aggregatis, rhomhoideo- 

 oblongis parvulis acutiusculis superne crenato-serratis utrinque pubescentibus ; cymulis foemineis 

 trifloris ; pedicellis pubescentibus fructu subgloboso vix dimidio brevioribus. Dry ravines near 

 the LimpiOj July (in fruit); Bigeloio. Leaves about three-fourths of an inch long, somewhat 

 coriaceous, usually 4 or 5 together in a cluster at the extremity of the short branchlets. Fruit 

 the size of a pepper-corn, with a thin pulp, dark purple and covered with a bloom. This species 

 is easily distinguished by the small fasciculate leaves and small subglobose fruit. 



FoRESTiERA ANGUSTiFOLiA (u. sp.): foliis fasciculatis lineari-spathulatis vel anguste-lanceolatis 

 integerrimis obtusis glabris obsolete venosis subtus porulosis ; fructibus ovatis acutis. Western 

 Texas near the Kio Grande; Wright^ Eo. 566. Near Kew Braunfels and shore of Matagorda 

 Bay, February ; Lindheimer. Matamoras, Tamaulipas ; Berlandier^ No. 3024. Mexico ; Gregg. 

 A large shrub, densely branched. Leav^es in fascicles of 3 to 5, on very short spurs, or 

 undeveloped branches. They are 8-10 lines long and 2-2| lines wide, somewhat coriaceous. 

 Cymules 3-5-flowered arising from the centre of the luft of leaves. BrKcteoles broadly obovate. 

 Flowers hermaphrodite, 3-4-androus. In Berlandier's specimens the leaves are narrowly 

 lanceolate, more coriaceous, and revolnte when dry. 



JASMINACE^. 



Menodora scabra, Gray^ in Sill. Journ. n. sei\ 14, iJ. 44 ; Torr. inBot. Pacif. B. Boad Bep. 7, 

 p. 18j t. 7. Western Texas and New Mexico ; Parry ^ Bigeloia, Arroyo del Pczo Verde, Sonora, 

 July; Scliott. Ojo de Vaca, etc, Chihuahua; Thurher, (No. 563 and 1694, Wright.) 



Menodora longiflora, Gray^ Z, c, Eavines and rocky hills along the Pvio Grande and. its 



tributaries, (No. 1695 and 1696, Wright.) 



Mexodora heterophylla, 3Ioricand i?i DG. Pr^dr. 8,^. 316; Gray^ I. c. Sandy plains and 

 borders of streams, western Texas and Neuvo Leon ; May — October. 



AEISTOLOCHIACEAE. 



Bot. Whipp. Bep. p. 128. 



Napa county, California, March j 



Thurher. 



Aristolochia LOxniFLORA, Engehu. dt Gray, PL Lindh. 1, p. 51. Sandy alluvions of the Rio 

 Grande, below the mouth of Los Moras, August ; Schoit. 



Aristolochia brevipes, Benth, PI. Hartw. p. 15. A. Wrightii, Seemann, Bot. Herald, p J ^"^0^ 

 t. 72. Dry roclcy ravines northwestern Texas, Chihuahua, and Sonora. (No. 567, 568, and 

 1700, Wright.) No. 1701 of Wright is a form with the lobes of the leaves narrower and less- 

 rounded at the extremity. Mr, Seemann's plant was collected in Durango. 



NYCTAGINACE^. 



Selinocarpus DiFFCSi^, Gray, I. c; var, parvifolius: foliis parvis (vix semi-pollicaribus); 



floribus solitariis. Canons of the Kio Grande, October; Parry . Presidio del Norte, August; 



Bigeloiv. 



OxYBAPHus GLARRiFOLius, Vahl. Enum. 2, p. 40 ? Western Texas, near the Eio Grande, "below 

 El Paso. This seems to have been collected only by Mr. Wright in his earlier exj^lorations. It 

 is his No. 605, Although the involucres are mostly 2 or 3-flowered, it may be only a variety 0£ 



O. glabrifolius. 





Ox YEP Alius AGGREGATUs, Valill. c. Plains'uear the Limpio, Texas; Bigelow, (No. 1717, Wright.) 



