PLANTS FROM BAJA CALIFORNIA. l79 



into a short petiole, the lower opposite, the upper alternate: 

 heads few on peduncles 1-2 inches long, from the ends of the 

 branches and the upper axils: involucre of 10-12, linear 

 obtuse scales, 10-12 mm. long, exceeded about ^ by the 

 pale-purple flowers: rays, none: corolla lobes ovate, half as 

 long as the throat, a little longer than the tube: styles 

 hardly thickened upward: akenes linear-clavate 6-8 mm. 

 long; pappus of 2-5, palese with broad costate-thickened 

 center not reaching the tip, and as many or more intermedi- 

 ate, similar and shorter ones, the longer | the length of 

 the akene. — Growing on the sand strip between the lagoon 

 and the ocean near the Boca de Las Animas. 



Palafoxia linearis. Lag. — Calmalli. 



Ch^nactis carphoclinia, Gray. — Calamujuet, AgciaDulce. 



CH.ENACTIS TENUiFOLiA, Nutt. — Agua Dulce. 



Ch^nactis stevioides, Hook & Arn. — San Enrique. 



Trichoptilium incisum. Gray.— San Gregorio, Santa 

 Maria. 



Helenium puberulum, DC. — El Rosario. 



POROPHYLLUM TRIDENTATUM, Benth. The involucral scales 

 are often furnished with three or four glands. — Magdalena 

 and Santa Margarita Islands, San Gregorio. 



PoROPHYLLUM GRACILE, Benth. — Magdalena Island, San 

 Jorge. 



PoROPHYLLUM CRASSIFOLIUM, Watson. — Pozo Grande. 



NicoLLETiA Edwardsii, Gray.— San Gregorio, San Se- 

 bastian. 



Dysodia porophylloides, Gray. — Calmalli. 



Dysodia anthemidifolia, Benth.— il showy plant very 

 abundant in sandy soil near the ocean from San Jorge to 

 Calmalli. 



Hymenatherum pextach^tum, DC. — San Fernando. 



