DIDYNAMIA. ANGIOSPERMIA. 49 



Stamina srarccly unequal* subsessile, inserted 

 neaj- the orifice; anthers oblong, naked. Style 

 declinate. Capsule ventricose- ovate, acute, 2- 

 cclied, 2-vaIved, opening at the summit. 



Herbaceous plants with opposite pinnatifid leaves, and 

 yellow oppositely disposed flowers; lobes of tlie corolla 

 rounded and entire, orifice and short tube internally pu- 

 btisceni.; filaments scarcely any, pubescent, anlliers most- 

 ly smooth, oblonL"*, and nearly equal, 2-celled, opening lon- 

 gitudinally. In one, if not all of the species, there exists 

 an imperfect fifth stamen, thus pointing- out the affinity 

 of this genus to Cth-ia and Verbaacum and so to the natu- 

 ral order or" SoLAXACE^. Capsule ventricose-ovate, acute, 

 and compressed at the summit, partly 4-lobed, 2-celled, 

 somewhat 4-valved, being readily separable in the line of 

 the medial coriaceous dissepiments; seminal receptacies 2, 

 round, small, and pendulotis from the centre oi" the dis- 

 sepiments, neither compressed nor marginated as in the 

 preceding genus. Seeds angular, with alated margins. 



Species. 1. S. * macrophyUa. Stem tall and branched; 

 leaves large, nearly smooth, lower ones subpinnatilid or 

 deeply toothed, the upper lanceolate and entire; flowers 

 subsessile, shortly campanulate, orifxe and tube densely 

 lanuginous; stamina scarcely exserted. Hab. In shady allu- 

 vial soils on the banks of tlie Little Miami, (Oliio,) near 

 the town of Lebanon. Flowering in July. A very dis- 

 tinct species much resembling GerardiaJIava in herbage, 

 4 or 5 feet high, distinctly connecting tins genus with 

 the precedmg, and indicating by its disparity with the 

 Ibllowing species, the probable existence (jf several more 

 in some of the unexplored i ecesses of North or South 

 An^enca. Leaves from 3 to 6 mches long, attenuated to- 

 wards the petiole, which is short. Calix only divided 

 about halfway down, segments partly ovate and often fb- 

 liaceous. Corolla yellow, with a distinct tube, about the 

 size of ihat of Verbasciim ThapsiLs, but more like a Gerar- 

 diuy border deeply 5-parted, lobes rounded, orifice and 

 tube filled wiih a matted woolly pubescence. Stamina al- 

 most equal, oblong, and quite smooth; towards the base 

 cf the tube there is a fifth stamen often almost perfect. 

 Stigma subcupitate. Capsule small, ventricose, with a 

 compressed pomt. Receptacles 2, roundish, dissepiment 

 bipuriile. .\ hardy and curious plant, well worth cultiva- 

 ting- 



2. pectinata. Ph. Obs. Kxtremely branched; leaves 

 small, pinnatifid, segments simple, linear, terminal one 

 VOL. II, E 



