364 Scrophulariaceae 



Capsule firm, coriaceous, opening down the upper suture 

 only, the valves spreading out nearly flat. 



1. D. longiflorus Nutt. Low, suffrutescent, 5-10 dm. high, 

 more or less branched throughout, viscid- pubescent or the in- 

 florescence and growing parts villous and somewhat glandular; 

 leaves narrowly or broadly lanceolate, more or less acute, 3-7 cm. 

 long, rather thin, the margins often revolute, denticulate or den- 

 tate ; calyx about 2.5 cm. long and about 8 mm. broad ; the lobes 

 5-7 mm. long, the upper a little longer, villous with viscid hairs; 

 corolla about 5 cm. long; the lobes of the upper lip shallowly 

 2-lobed, their margins wavy or erose; those of the lower lip usu- 

 ally truncate, more or less deeply crenately toothed. 



Common on all the foothills and in the chaparral belt of the mountains. 

 We have seen no specimens with the strongly arachnoid pubescence which 

 is found on the plants about Santa Barbara, the type-locality of this species. 

 Two quite different forms occur with us: the one from which the above 

 description is drawn occurs in the Santa Monica Mountains, and is nearest 

 the type; but about Los Angeles and Pasadena the plants are usually less 

 villous and have a slender (about 5 mm. broad) calyx, and narrower corolla- 

 throat which tapers gradually to the slender tube. 



2. D. puniceus Nutt. Resembling the last in habit; leaves 

 usually narrowly lanceolate, the margins strongly revolute ; calyx 

 15-20 mm. long, 5 mm. broad, viscid, not at all woolly, its lobes 

 4-5 mm. long; corolla 2-2.5 cm. long, scarlet, the lobes of the 

 lower lips rather narrow, emarginate or retuse. 



Common on dry hillsides about San Diego and ranging northward to the 

 Santa Margarita River, where it seems to intergrade with D. longiflorm. 



8. MIMULUS L. MONKEY-FLOWER. 



Herbs with opposite leaves and mostly showy yellow 

 or red flowers solitary and axillary or in a terminal 

 raceme. Calyx prismatic, 5-angled and 5-toothed. Co- 

 rolla from tubular to funnelform with strongly bilabiate 

 limb or the lobes nearly equal, a pair of bearded ridges 

 extending down the lower side of the throat. Stamens 

 4, the fifth entirely wanting. Stigma mostly of 2 flat 

 lobes closing together when irritated. Capsule dehiscent 

 by both sutures or on one side only, or cartilaginous and 

 indehiscent. Seeds many. 



