254 DESCRIPTION OF SPECIES. 



ZANTHOXYLE^E. 



AILANTHUS, Desf. 

 Ai Ian thus ovata, sp. nov. 



Plate LI, Fig. 7, 8. 



Winged fruits or samaras, oblong ovate, rounded on one end, acute at the other, 

 short, transversely striate ; seeds oval. 



The specimen shows a branch with unopened buds and some samaras 

 scattered around, which, though not contracted in the middle and not as 

 long as are generally those of this genus, seem however referable to it. 

 No leaves were found in connection with the specimen. The samaras are 

 nearly 2 centimeters long and 13 millimeters broad in the middle. The 

 nearest relation of the species is A. recognita. Sap., "Et.," i, p. 105, pi. viii, 

 fig. 7, formerly described as Ropalospermites strangeceformis. The branch 

 with prominent buds and smooth back has the facies of an old branch of 

 Ailanthus. 



Hab. — Bridge Creek, Oregon. 



MYRTOIDEtE. 



MYRTUS, Tourn. 



Myrtus orcgonensis, sp. nov. 



Plate LVIII, Fig. 10. 



Leaves coriaceous, oblong-ovate, rounded iu narrowing to the petiole, very entire ; 

 secondary nerves nearly at right angles, joining the marginal vein; intermediate ter- 

 tiary nerves shorter ; surface puuctulate. 



The leaf, nearly 4 centimeters long, 1 i broad, is widest below the middle, 

 gradually narrowed up to a point or short acumen, rounded in narrowing 

 more rapidly to a short petiole. The basilar nerves follow the borders all 

 along, anastomosing in curves with the ends of the lateral ones, which, 

 all parallel, are at an angle of 60° to the somewhat strong rigid midrib. 

 The tertiary branches are short and generally disappear in the middle of 

 the areas, anastomosing at right angles; the surface is dotted. The rela- 

 tionship of this species is with Myrtus amissa, Heer, "Bornstadt Fl.," p. 18, 



