l68 CALIFORNIA ACADEMY OF SCIENCES. 



507. Aristoeochia, sp. A larger species belonging 

 to the same section. — Sierra de la Laguna. 



508. HouTTUYNiA Californica (Hook.) San Jose 

 del Cabo. 



510. Peperomia uMBiLicATA Ruiz & Pavon. — Sierra 

 de San Francisquito. 



511. LoRANTHUS Sonor^ Watson ? Growing on Cvr- 

 tocarpa. Much larger than the described specimens. — 

 San Jose del Cabo. 



512. Phoradendron sp. Common throughout the 

 southern half of the peninsula. 



513. Pedilanthus macrocarpus Benth. — San Jose 

 del Cabo. 



ERiANTHA Benth. — San lose del 



Hindsiana Benth. — San Jose del 

 hypericifolia L. — San Jose del 



HETEROPHYELA L. Var. CYATHO- 



PHORA Jacq. — Miraflores, San Jose del Cabo. Speci- 

 mens from the first place have white seeds with a trans- 

 verse depression, a solitary gland and the floral leaves 

 are sometimes margined with white. Specimens from 

 the second locality are smaller, the styles more deeply 

 divided, glands five, seeds dark. 



var. ERioPHYLEA Millsp. Zoe, i, 348. — 



Sierra de la Laguna. 



518. Euphorbia leucophylla Benth. This species 

 is extremely variable as was shown by Engelman in his 

 notes in Proc. Am. Acad., v, 168-170. E. velntiiia 

 Greene Bull. Cal. Acad., ii, 57, is exactly the typical 



