338 



conic-ovoid; sepals lanceolate, acuminate, the tips very slightly 

 spreading; achenes suborbicular, 6-S mm. in diameter, puberu- 

 lent, abruptly narrowed at both ends, with an orbicular impression 

 in the middle, sometimes slightly inequilateral, the plumose style 

 erect or slightly oblique, 5-6 cm. long, tawny, lustrous, the hairs 

 spreading. 



Collected by the writer in the Yellow River valley, near Mc- 

 Guire's Mill, Gwinnett county, Georgia. In flower July 2, 1895, 

 m fruit July li, 1893. 



A handsome species between Clematis Addisonii d.nd C. Viorna, 

 with foliage somewhat resembling that of the former and with the 

 habit of the latter. It differs from C. Addisonii in its much elon- 

 gated and climbing stem, and the distinctly petioled and acute 

 floral leaves. It may readily be distinguished from C. Viorna by 

 its suborbicular achene and longer plumose styles, as well as 

 by the foliage. 



Lobelia flaccidifolia. 



Perennial, slender, deep green, glabrous or nearly so. Stems 

 erect, 2-6 dm. tall, solitary, or loosely tufted, usually branched 

 above, or, in small plants, rarely simple, the branches wire-like ; 

 leaves thin, the basal or lower cauline obovate or oblong-spatu- 

 late, the rest linear-oblong or rarely linear-lanceolate, 3-10 cm. 

 long, obtuse, undulate or crenate-undulate, short-petioled; racemes 

 interrupted, .5-2 dm. long, recurved ; pedicels erect, slightly 

 curved, 4-5 mm. long, usually exceeded by their bracts; calyx 

 glabrous, its tube broadly turbinate, becoming globose-hemi- 

 spheric and strongly ribbed, its segments linear-lanceolate, 4-5 mm. 

 long, acute, spiny-toothed, auricled at the base, slightly revolute; 

 corolla about 1.5 cm. long, blue, sparingly pubescent without, the 

 segments of the upper lip reflexed, crisped, about i^ as long as 

 the tube, the lower lip as long as the tube, its segments acute, the 

 middle one lanceolate, the lateral ones oblong-lanceolate ; staminal 

 tube ascending, anthers pubescent; capsule ovoid, 5-8 mm. long, 

 beaked, the free portion somewhat shorter than the part adnate 

 to the calyx-tube. 



In sand in deep river swamps, southern Georgia. Summer. 



The species here described as new is, on the whole, most 

 closely related to Lobelia Liidoviciana, from which it differs m the 

 delicate habit, the very thin texture of the leaves and the branch- 

 ing stems; there are characters in the flower to separate it from 

 the Louisiana plant in the narrower calyx-segments and narrower 

 segments of the lips of the corolla. 



