82 PROCEEDINGS OF THE AMERICAN ACADEMY 



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

 the American species.* 



* SPECULARIiE Americans. 



§ 1. CAMPYLOCERA. Flores dimorplii, prjBcoeiores cleistofjami. Capsnla 

 elongata, valvulis infra-apicalibus deliiseens, sero saltern in i)raecocioribus 

 ab apice longitudinaliter subdissiliens. Ovarium in floribus cleistogamis 

 quandoque abortu uniloculare, i)lacenta lateral!. — Cumpylocera Nutt. in Trans. 

 Ainer. Phil. Soc. n. ser. 8, p. 257 (1843). 



1. S. LEPTOC.4KPA. Caule virgato; foiiis lanceolatis; floribus in axillis arete 

 sessilibus; stiginatibus 2-3 ; ovario in fl. cleistogamis nonnullis abortu unllocu- 

 lari calycls lobis 3-4 superato ; eapsulis fere cylindricis gracilibus valvulis sub- 

 apiealibus adscendentibus 1-3 pertusis, praecocioribus saapius decurvatis raro 

 tortis ; seminibus oblongis. — Campanula leptocar/xi Engelm. in herbariis. Cam- 

 pylocera leptocarpa & var. glabella Nutt. 1. c. Specnlaria Liiisecoiin'a Buckley in 

 Proc. Acad. Philad. 1861, p. 460. — Arkansas, Nuttall, Engelniann ; Texas, 

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

 the twisting of the capsule on its axis, in the manner of DowniiKjia, mentioned 

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



2. S. LiNDHEiMERi Vatke in Linnwa, 38, p. 713. Procerior; caule erectovel 

 reclinato (1-3-pedali) superne nunc paniculate; foiiis oblongo-lanceolatis imisve 

 ovalibus ; floribus brevi-pedunculatis vel subsessilibus magis paniculatis ; stig- 

 matibus loculisque ovarii semper 3-4; calycis lobis etiam in cleistogamis 5 ; 

 eapsulis 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 "Camjuinula Coloradoi-nse" Buckley, 

 1. c, from his character of " stigmas 4-5"- (I have seen only 4), and therefore 

 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 calyco 

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

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

 Triodallus Raf., ubi 1 Specnlaria § Triodallus Torr. Fl. N. Y. 



3. S. mi'LouA. Caule gracili ad angulos retrorsum serrulato-hirtello vel 

 subljevi ; foiiis ovatis oblongisve rariter crenulatis, superioribus lanceolatis 

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

 lobis in cleistogauiis brevibus ovatis vel subulatis, in normalibus lanccolato- 

 subulatis elongatis corollam vix adaiquantibus ; eapsulis cylindraceis subfusi- 

 formibus vix costatis, valvulis infra-apicalibus. — Campanula hiJJora, Ruiz & Pav. 



