OF AETS AND SCIENCES. 95 



the genus Diplacus Nutt. was founded. Here the two placentse are 

 hardly at all united in the axis, even in the blossom ; which is other- 

 wise that of a true 3Iimulus. Then there is a low annual species with 

 short corolla and thin-walled capsule, but the placentfe dividing with 

 the valves, which is so peculiar in wanting the angles or keels which 

 are so conspicuous in Mitnulus that it was- referred to a peculiar sec- 

 tion of Herpeslis. Altogether it seems necessary to regard the whole 

 as one polymorphous genus, and to arrange our species as in the 

 subjoined conspectus.* 



* MIMULUS Linn. 



§ 1. EUNANUS. {Eunanus Benth. in DC.) Herbae annuae, plerumque nanae : 

 calyx 5-clentatus, 5 aiigulatus, angulis dentibusque pi. m. plicato-carinatis : 

 corolla in typicis tubo gracili elong-ato : stylus superne glandulosus vel pubes- 

 cens : stigma aut bilaniellatum, aut labiis latis petaloideo-ililatatis eonnatis 

 peltatum vel infundibulifornie : capsula valvis medio septiferis placentas 

 divisas aiiferentilnis. — Species 11, Californicae, habitu varice, pube pi. m. 

 viscida vel glandulosa. 



* Capsula cartilaginea, 2-4-sulcata, sero dehiscens, basi obliqua vel gibbosa: 

 calj'x basi gibbosus, ore valde obliquo : corolla purpurea, fauce variegata 

 vel maculosa, 



•t- Tubo filiformi longe exserto : flores primarii caule multo longiores. [CEnoe 

 Gray in PI. Hartvv., & sect, in Bot. Calif.) 



•^1. M. TRICOLOR Lindl. Jour. Hort. Soc. 4, p. 222, "Junio, 1849." Foliis 

 oblongis vel subliriearibus basi attenuatis sessilibus ; calyce sursum ampliore 

 (dentibus longioribus) basi parum gibbo; coroll;e labiis sequilongis, lobis con- 

 similibus ; capsula lirevi-ovali seu ovata subconipressa, marginibus anticis et 

 posticis acutis ; semiiiibus obovatis obliquis iis subsequentium multo ninjoribus. 

 — Eunanus Coulteri Gray ex Benth. PI. Hartw. p. 329, " Augusto, 1849." — It is 

 well that Lindley's name takes precedence, as there was a mistake in supposing 

 tliat this species was in Coulter's collection. 



^ Var. ANGUSTATUS. Foliis linearibus parvulis, tubo corollse bipollicari tener- 

 rimo. — Eunanus Coulteri var. angustatus Gray, Proc. Am. Acad. 7, p. o81. 



" 2. M. DouGLASii. Poliis ovatis oblongisve in petiolem contractis ; calyce 

 basi mox valde gibboso ; corollas labio inferiore abbreviato, superiore amplo 

 erecto ; capsula lineari seu lineari-oblonga tereti 4-sulcata ; seminibus ovalibus 

 modo Eunnni utrinque apiculatis. — M. nanus var. fi. suhunijlnrus Hook. & Arn. 

 Bot. Beech, p. 378. Eunanus Doucjiasii Benth. in DC. Prodr. 10, p. 374. The 

 stigma is sometimes of two very unequal lobes, as described by Bentliam, some- 

 times of two broad and rounded unequal lobes, sometimes peltate and nearly 

 circular, as in most of the following. 



J- H- Tubo coroUae e calyce parum exserto : flores folia vix superantes. 



■^ 3. M. LATiFOLius. Spithamseus, viscosus ; foliis radicalibus exiguis ovani- 

 dis, caulinis amplis late ovatis membranaceis basi angustatis sub2)etiolati8 ; 



