132 SNAPDRAGON ORDER 



the summit ; flowers in terminal racemes or spikes ; leaves alternate, entire, 

 dentate or lobed, or the lower opposite or whorled; annual, biennial or 

 perennial. 



1. Flowers yellow and orange, 2-3 cm. long L. vulgaris 



2. Flowers blue and white, 8-12 mm. long L. canadensis 



Mimulus Linne 1753 Monkey Flower 



(Gr. mimos, comic actor, from the grinning corolla) 



PL 22, fig. 4. 



Sepals 5, united into a 5-angled, 5-toothed calyx, the upper tooth usu- 

 ally the largest, petals 5, pink, violet or yellow, united into an irregular 2- 

 lipped corolla, tube cylindric, upper lip erect or turned backwards, lower 

 lip spreading, 3-lobed, the lobes rounded, stamens 4 in pairs, inserted on the 

 corolla tube, ovary with 2 cavities, style thread-like, stigma 2-lobed, capsule 

 oblong or linear, enclosed by the calyx ; flowers axillary, solitary, stalked ; 

 leaves opposite mostly toothed ; perennial. 



1. Flowers yellow 



a. Upper calyx tooth largest; fruiting calyx in- 



flated 



(1) Stems spreading, rooting at the joints M.Geyeri 



(2) Stems erect, not rooting at the joints 



(a) Corolla 2-3 cm. long; perennial M. Langsdorfi 



(b) Corolla 6-10 mm. long; annual M.Hdllii 



b. Calyx teeth equal or nearly so; fruiting calyx 



not inflated ; leaves sticky, musk-scented 



( 1 ) Corolla 2-4 cm. long ; perennial M. moschatus 



(2) Corolla 10-12 mm. long; annual M.floribilndus 



2. Flowers red to purple* 



a. Corolla 1.5-5 cm. long 



(1) Corolla 1.5-2 cm. long; stigma funnelform M. nanus 



(2) Corolla 3-5 cm. long; stigma 2-lobed M. Lewisii 



b. Corolla 6-8 mm. long; stigma 2-lobed M.rubellus 



Orthocarpus Nuttall 1818 Orthocarpus 



(Gr. orthos, straight, karpos, fruit) 



PI. 22, fig. 2. 



Sepals united into a tubular or bell-shaped calyx, 4-cleft or sometimes 

 split down both sides, petals 5, yellow, white or purplish, united into a very 

 irregular, 2-lipped corolla with slender tube, upper lip little if any longer 

 than the 3-lobed 1-3-pbuched lower one, stamens 4 in pairs, inserted in the 



