ROSE MEXICAN \M» CENTRAL AMERICAN PLANTS. 1 3 1 



SPECIES OF SEVERAL GENERA. 



Apium ammi Urban. 



Collected by J. N - . Rose and Jos. II. Painter, on mountain side, Hacienda de la 

 Encarnaci6n, Mexico, July 7. L905 (no. 8467 . 



Centella asiaticii L. Urban. 



Collected by Dr. I'.. Palmer, near San Dieguito, San Luis Potosi, June, 1905 

 qo. 625 . 



This is the firsl time the genus has been reported from Mexico, although its occur- 

 rence there is not a surprise. It will doubtless be found in many places along the 

 eastern coast. 

 Coaxana ebracteata Rose. 



Oaxacana ebracteata Rose, Contr. Nat. Herb. 8: 337. 1905, by error. 



Stems tall. 60 cm. or more high, erect, glabrous; upper leaves twice ternate; leaflet 

 ovate, acute, more or less cleft and sharply serrate; petioles wanting, the stipular 

 bases of the leaves much enlarged and scarious; peduncles short, 7 to 8 cm. long; 

 ra\ - numerous, spreading, 3 to 4 cm. long; involucre and Lnvolucel bractlets wanting; 

 flowers purplish, the sterile ones on Blender pedicels, the fruiting ones very shi 

 subsessile. 



Collected by C. and E. Seler between Hurtztan and Oxchuc, Chiapas, March 11. 

 L906 no. 2148). 

 Hydrocotyle sp. 



Collected by J. N. Rose and Jos. II. Painter, on river hank near txmiquilpan, 

 Hi. lain. i, July 29, L905 (no. 9082). 



Hydrocotyle sp. 



Collected by J. N. Rose and Jos. H. Painter, on river hank in alluvial soil near 

 Toinellin, Oaxaca, September 4, 5, 1905 (no. L0053). 

 Lomatium dasycarpum (Torr. & Gr. > Coult. & Rose. 



Collected by E. A.Goldman in the San Pedro Martir Mountains, Lower Cali- 

 fornia, July 15, 1905 (no. 1138). 



This is new to the Mexican Mora. 

 Sphaenosciadium eryng-iifolium (Greene) Coult. & Rose. 



Collected by E. A. Goldman in the San Pedro Martir .Mountain-. Lower Cali- 

 fornia, Mexico. 1905 no. 1230). 



This is new to the Mexican Flora 



ADDENDA. 



A NEW IONOXALIS. 



Ionoxalis stolonifera Rose, sp. nov. fl 



A very delicate plant producing long, slender, branching stolons; bulbs small for 

 the genus (4 to 5 nun. in diameter), growing in damp moss on perpendicular cliffs; 

 hulh scales thin, black, 3-nerved; leaflets 3, 5 to 18 mm. long, wedge-shaped, the 

 apex strongly notched and the Lobes usually very unequal; peduncles slender, 

 usually Longer than the petiole-, solitary or few-flowered; sepals 2 nun. Long; petals 

 violet-purplish, 12 mm. long. 



'This remarkable specie-, inserted while the paper i- in proof, is the on j 

 herein published based on the collections of 1906. 



