144 COULTER AND ROSE 



34. Arracacia xanthorrhiza Bancr. Jamaic. Journ. 4: 18. 1826. 



This is the type of the genus and was based upon specimens col- 

 lected in Jamaica. We have recently received specimens from the 

 Botanical Department of Jamaica. 



The following species are to be excluded : 



Arracacia acuminata Benth.= Neonelsonia sp. 



" decumbens B. & H.= Tauschia sp. 



" mariana Watson = Tauschia sp. 



" edulis Watson = Tauschia sp. 



" vaginata C. & R.= Tauschia sp. 



" fiiifolia C. & R.= Tauschia sp. 



" nudicaulis C. & R.= Tauschia sp. 



"■' arguta B. & H.= Deweya sp. 



" hartwegi Watson = Deweya sp. 



" kelloggii Watson = Deweya sp. 



" parishii Greene = Deweya sp. 



" vestita Watson = Deweya sp. 



19. OTTOA H.B.K. Nov. Gen. et Sp. 5: 20. 1821. 



A South American genus, of a single species, which extends into 

 South Mexico. 

 Ottoa oenanthoides H.B.K. Nov. Gen. et Sp. 5: 20. pi. 423. 1821. 



Vera Cruz : C. de Perote, Nelson 2030, May 1S93. 

 Oaxaca : Sierra de San Felipe, altitude 3000 meters, Charles L. 

 Smith 894, September 25, 1894. 



20. APIUM L. Sp. PI. i: 364. 1753. 



A genus of world-wide distribution. For the Mexican and Central 

 American region Hemsley enumerated five species, four of which bear 

 names. Of these, A. echijiatum Benth. & Hook, has been transferred 

 to Leptocaulis ; A. graveolens L. is an introduced species; A. popei 

 Gray has been transferred to Ammoselinzi/n ; ^vhile A. leptophyllum 

 Mull, becomes A. am7?ii^ as indicated below. This leaves a single 

 native, but not endemic species for our region. 



Apium ammi (Jacq.) Urban, Fl. Bras. 11^: 341. pi. gi. 1879. 



Sison a>;i//n' ]a.cq. Hort. Vindob. 2: pi. 200. 1772. 



Apium hptopJiyllitm F. Muel in Benth. Fl. Austral. 3 : 372. 1866. 



Lower California: in the Plaza, La Paz, Rose 1322, June 14, 1897. 

 State of Mexico: Chimaleapan, Altamirano 8, June 1890. 

 Federal District: Altamirano 5, July 1890. 

 Vera Cruz : Papantla, E. A. Goldman 80, March 7, 1898. 

 Durango : near City of Durango, Palmer 358, April— November 

 1896. 



