230 PROCEEDINGS OF THE ACADEMY OF [DeC, 



Sepals united only at base. Corolla with posterior 

 lobes evident, united one-half length of anterior. 

 Styles distinct less than one-fourth length. Leaves 

 orbicular. 14, Glohifera. 



Sepals united |-| length, split nearly to base on the 

 anterior side. Corolla with the posterior lobes 

 lost, the tube split nearly to base on posterior 

 side. Styles distinct ^| length. Leaves elliptic- 

 obovate. 15. Hemianthus. 



Leaves bipinnatifid. Seeds pale greenish-yellow, ridged, with 

 faint transverse lines. Pedicel not bibracteolate. Cor- 

 olla lavender. Erect. 16. Leucospora. 



III. VERBASCE^ 17. Verhascu7n. 



IV. CHELONE^. 



Seeds angled or winged, maturing many to each cell. Corolla- 

 lobes uniformly colored, shorter than the tube which is 

 not conspicuously pouched at base posteriorly. Posterior 

 filament a conspicuous process. Sepals nearly or quite 

 distinct. Plants stiff, 4-20 dm. tall. 

 Corolla white or pink-red, pubescent or glabrous within, its 

 anterior lobes projecting. Sepals distinct. Sterile fila- 

 ment slender, filiform, white. 

 Corolla membranous, somewhat pubescent or glabrous 

 within over base of anterior lobes. Sterile filament as 

 long as the others, pubescent on its posterior face. 

 Anther-sacs distinct, glabrous or barbate with short 

 hairs. Sepals lanceolate to ovate, acute to acuminate. 

 Seeds wingless. Inflorescence compound, a raceme of 

 cymosely branching lax flower-clusters. 



18. Penstemon. 

 Corolla semi-fleshy, densely pubescent within over base of 



anterior lobes. Sterile filament much shorter than 

 the others, glabrous. Anther-sacs becoming confluent, 

 densely lanate. Sepals ovate-orbicular, rounded. 



Seeds winged. Inflorescence simple, a spike-like ra- 

 ceme of single flowers on short several-bracted pedicels. 



19. Chelo7ie. 

 Corolla red-brown, glabrous within, its antero-lateral lobes 



vertically projecting, the anterior lobe deflexed. Sepals 

 obviously united at base. Sterile filament shorter than 

 wide, two-lobed, red-brown. Inflorescence compound. 



20. Scrophularia. 

 Seeds rounded, smooth, maturing one to each cell. Anterior 



corolla-lobes blue, posterior white, all longer than the tube 

 which is strongl}^ pouched at base posteriorly. Posterior 

 filament a crescentic scarcely raised process. Sepals united 

 over one-third length, enclosing over half the capsule. 

 Plant lax, 1-3 dm. tall. 21. Collinsia. 



V. RUSSELIEiE. 22. Russelia. 



