150 CALIFORNIA ACADEMY OF SCIENCES. 



divided, ovate; anterior lobes narrowly linear: calyx 

 spurred ; posterior lobes erect, linear lanceolate ; anterior 

 lobes similar to and distinct from the others, standing out 

 at right angles to the upper ones. 



Compared with //. arahidoidcs, the spur is much longer, 

 the posterior lobes of the corolla much more deeply 

 divided and of a different shape. The two anterior 

 calyx lobes are situated near the end of the spur, distant 

 from the upper ones. A handsome species common m 

 the high mountains. 



354. Arbutus Menziesii Pursh. Leaves large, to- 

 mentose below. A medium sized tree, blooming in Jan- 

 uary. — Common on the summits of the high mountains. 



355. Samolus Valerandi L. var. repens. Stems 

 creeping and rooting at the joints, forming entangled 

 mats often many feet in extent. — Sierra de la Laguna on 

 moist rocks. — Sierra de San Francisquito on stream 

 banks. 



This plant differs strikingly in habit from typical S. 

 Valerandi, but some forms collected by J. G. Lemmon 

 (No. 2645) in the Huachuca mountains in Arizona are 

 intermediate between them. 



356. Macreightia intricata Gray, Proc. Am. 

 Acad. V, 163. The leaves are described as " leviter 

 triplinervis,"' but the lateral nerves are short, given off 

 above the base and usually hardly visible ; the reflexed 

 pedicels of the hermaphrodite flowers are from about 

 one-half to the full length of the leaves, thickened above 

 and with a small bract at the lower third ; they are ap- 

 parently always sohtary, though from the approximation 

 of the axils they frequently appear clustered: calyx lobes 

 ovate, apiculate-rephcate, the lobes at flowering longer 

 than the basal part: corolla 5-7 mm. cyhndrical-urceo- 



