CarlotcrigJitia. ACANTHACE.E. 327 



-H- -H- Calyx-lobes lanceolate or linear, hardly surpassing the capsule : cleistogamous flowers 

 common. 



R. Strepens, L. Green and almost glabrous or pubescent, 1 to 4 feet high : leaves oblong- 

 ovate or oblong, 2 to 5 inches long, mostly contracted at base into a short petiole : calyx 

 sparingly soft-hirsute or ciliate : well-developed corolla 1 or 2 inches long, with tube 

 about the length of the campanulate-funnelform throat and limb. Spec. ii. 634 (partly) 

 & Mant. 422; Sclik. Handb. 1. 177; Pursh, 1. c. Dipteracanthus strepens, Nees, 1. c., mainly. 

 Dry soil, Penn. to Wisconsin, Florida, and Texas. 



Var. cleistantha. Leaves commonly narrower and oblong : flowers for most of the 

 season cleistogamous. Dipteracanthus (Meiophanes) micranthus, Engelm. & Gray, PI. Lindh. 

 i. 49. D. strepens, var. strictus, Nees, 1. c., mainly. Hi/yrophila lllinoiensis, Wood in Bull. 

 Torrey Club, v. 41. Common with the ordinary form! 



5. STENANDRIUM, Nees. (Composed of O-TO/O?, narrow, and dv8poi>, 

 the hall for men, alluding to the narrow corolla ?) Low and small perennials, 

 all American, commonly with leaves all at base of scapiform flowering stems ; 

 the flowers spicate ; corolla rose-colored or purple. 



S. dulce, Nees. Hirsute-pubescent or glabrate : leaves all radical, oval or oblong, thick- 

 ish, 9 to 10 lines long, either narrowed or abruptly contracted into a rather long naked 

 petiole: scape equalling or shorter than the leaves, capitately few-flowered: bracts lanceo- 

 late, longer than the calyx, usually hirsute-ciliate (either nerveless or 3-nerved) : tube of 

 the corolla narrow, rather longer than the calyx, the limb half inch or more in diameter : 

 capsule clavate-oblong, somewhat terete. DC. Prodr. xi. 282, with S. trinerve. Ruellia 

 dulcis, Cav. Ic. vi. 02, t. 585, fig. 2. (Hex. to S. Chili.) 



Var. Floridanum. Glabrous, only the upper bracts and bractlets lightly hirsute- 

 ciliate. Indian River, E. Florida, Palmer. 



S. barbatum, Torr. & Gray. Very hirsute with long and shaggy white hairs, many- 

 stemmed from the root ; a span or less high : leaves crowded, oblanceolate, attenuate at 

 base into an indistinct petiole, above passing into the lanceolate and crowded foliaceous 

 bracts of the rather many-flowered spike, which nearly equal the corolla: tube of the 

 latter hardly longer than the calyx; limb over half inch in diameter: capsule ovate, 

 obcompressed, not attenuate at base: seeds hispid. Pacif. R. Rep. ii. 168, t. 4, & Bot. 

 Mex. Bound. 122. Hillsides, western borders of Texas and adjacent parts of New Mex- 

 ico, Wriyht, Gen. Pope, &c. 



6. BERG-lNIA, Harvey. (In honor of Mr. Bergin, of Dublin.) Benth. 

 & Hook. Gen. ii. 1096. A single species. 



B, virgata, Harvey. Low and branching, apparently suffruticose, minutely cinereous- 

 puberulent: branches slender: leaves linear-oblong, nearly sessile (half inch long); the 

 upper smaller and passing into obscurely 3-nerved bracts of the loose and interrupted 

 spike: calyx rather longer than the bracts, 2-bracteolate : corolla probably white, less 

 than half inch long ; its lower lobe bearded at and below the base. Gray, Bot. Calif. 

 i. 588. " California," Coulter. Probably Arizona : not since found. 



7. CARLOWRlG-HTIA, Gray. (Charles Wright, the discoverer of one 

 species, the earliest explorer of the district it inhabits, a most assiduous and suc- 

 cessful collector and investigator of the botany of several parts of the world.) - 

 Much branched undershrubs, minutely cinereous-puberulent or glabrate ; with 

 slender branchlets, small and narrow entire leaves, and rather small loosely 

 spicate or paniculate-racemose flowers : corolla purple. Gray, Proc. Am. 

 Acad. xiii. 364. 



C. linearif 61ia, Gray, 1. c. A foot high, ericoid-leafy : leaves filiform-linear, 4 to 8 lines 

 long; uppermost passing into similar bracts and bractlets of the somewhat paniculate in- 

 florescence: calyx deeply 5-parted; the divisions similar to and equalled by the bractlets: 



