82 PROCEEDINGS OF THE AMERICAN ACADEMY 



views which we here take may be best exhibited in a conspectus of 

 the American species.* 



* SPECULARUL Americans. 



§ 1. CAMPYLOCERA. Flores dimorphi, prajcociores cleistogami. Capsula 

 elongata, valvulis infra-apicalibiis dehiscens, sero saltern in prfficocioribus 

 ab apice longitudinaliter subdissiliens. Ovarium in floribus cleistogamis 

 quandoque abortu uniloculare, placenta laterali. — Campylocera Nutt. in Trans. 

 Amer. Pliil. Soc. n. ser. 8, p. 257 (1843). 

 ^ 1. S. LEPTOCABPA. Caule virgato ; foliis lanceolatis ; floribus in axillis arete 

 sessilibus ; stigmatibus 2-3 ; ovario in fl. cleistogamis nonnullis abortu unilocu- 

 lari calycis lobis S-4 superato ; capsulis fere cylindricis gracilibus valvulis sub- 

 apicalibus adscendentibus 1-3 pertusis, praecocioribus sa?pius decurvatis raro 

 tortis ; seminibus oblongis. — Campanula leptocarpa Engelra. in berbariis. Cam- 

 pylocera leptocarpa & var. glabella "Nutt. 1. c. Specularia Linsecomia Buckley iu 

 Proc. Acad. Pliilad. 1861, p. 460. — Arkansas, Nuttall, Engelmann ; Texas, 

 Wright, Buckley ; Colorado to tlie Rocky Mountains, Parry, Vasey. As to 

 the twisting of the .capsule on its axis, in the manner of Downingia, mentioned 

 by Nuttall, it is hardly if at all to be seen in our specimens. 

 *' 2. S. LiNDHEiMERi Vatke in Linnsea, 38, p. 713. Procerior ; caule erecto vel 

 reclinato (1-3-pedali) superne nunc paniculato ; foliis oblongo-lanceolatls imisve 

 ovalibu^s ; floribus brevi-pedunculatis vel subsessilibus niagis panlculatis ; stig- 

 matibus loculisque ovarii semper 3-4; calycis lobis etiara in cleistoganrs 5 ; 

 capsulis angulatis basi angustatis baud curvatis tortisve valvulis 2-3 pauUo 

 infra apicem pertusis ; seminibus fere orbiculatis. — W. Texas, Lindheimer, 

 Wright, Buckley. I take this to be the "Campanula Coloradoense " Buckley, 

 1. c, from his character of "stigmas 4-6" (I have seen only 4), and tlierefore 

 have adopted the specific name. The seeds are described as " ellipsoid," of 

 the preceding species " elliptical." The expanded corollas are an inch in 

 diameter, about twice the size of those of S. leptocarpa. The capsules appar- 

 ently are never one-celled, although the partitions separate readily from the 

 axis, one carrying away the placenta, and there is a tendency to be septicidal. 

 The perforations, moreover, are by valves that open from above downward, 

 or by mere ruptures. In many of the cleistogamous flowers, the corolla has 

 attained considerable development, so as to suggest a gradation between the 

 two kinds. 



§ 2. DYSMICODON Endl. Flores dimorphi, praecociores cleistogami calyce 

 3-4-lobo, normales serotini, calyce 5-lobo. Capsula brevior, aut sub apice 

 aut infra medium pertusa. Semina lenticularia. — Dijsmkodon Nutt. 1. c. 

 TrioJallus Raf., ubi ? Specularia § Trioclallus Torr. El. N. Y. 



'^ 3. S. BiFLORA. Caule gracill ad angulos retrorsum serrulato-hlrtello vel 

 sublEevi ; foliis ovatis oblongisve rariter crenulatis, superioribus lanceolatis 

 flore fulcrato brevioribus ; floribus in axillis solitariis binisve sessilibus ; calycis 

 lobis in cleistogamis brevibus ovatis vel subulatis, in normalibus lanceolato- 

 subulatis elongatis corollam vix ada^quantibus ; capsulis cylindraceis subfusi- 

 formibus vix costatis, valvulis infra-apiealibus. — Campanula bijlora, Ruiz & Pav. 



