326 ACANTHACE^. Ruellia. 



form: capsule puberulent. (Torr. in herb., unpublished.) — Dry woods, in W. Louisiana, 

 J. Hale. Arkansas, Bigelow, Mrs. Harris. Corolla about an inch and a half long. 



* * * Flower.s subsessile and commonly glomer.ite in the axils, when short-peduncled with 

 foliaceous primary bracts or bractlets: stamens of ahnost e(|iial length: capsule at most 8-seeded : 

 short hispid liairs of the seed spreading when wet, containing a fixed spiral libre or band, but no 

 uncoiling spiricles. 



->— Suffrutescent : leaves rigid: corolla wliite: capsule oblong, with hardly any stipe-like base, 



R. Parryi. A span higli, much brancliod from the ligncscent base : leaves obovate-oblong, 

 or the upper oblong-lanceolate, tapering into a distinct petiole, hispid-ciliate, otherwise 

 glabrate, an inch or less long (the older have cystolitlis) : flowers mostly solitary in the 

 axils, on a peduncle shorter than the petiole or subsessile : bractlets oblong, surpassing 

 the slender-subulate often unequal calyx-lobes: tube of the corolla (inch long) slender, 

 dilated at tiie summit into a small narrowly funnelform throat, which is shorter than the 

 lobes. — Dipleracanlhus sujfriiticosus, Torr. Bot. Mex. Bound. 122 (but there is a R.sxffru- 

 ticosa, Koxh.}. — South-western borders of Texas; at Presidio del Norte, Anr^/, in flower. 

 Valley of the Pecos, in fruit, Wri(jht. 



•i— -t— Herbaceous: stems mostly simple: corolla usually blue or violet, except in R. tiihl flora : 

 capsule more broadly clavate and obcompressed. 



■H- Calyx-lobes filiform-attenuate, longer than the capsule: cleistogamoiis flowers seldom seen. 



R. noctiflora. Puberulent, or very young parts soft-villous, a foot or less high : leaves 

 narrowly oblong (1 to 3 inches long), mostly with tapering base, but sessile: bracts and 

 bractlets of the solitary or few flowers linear-lanceolate: calyx generally sof tpuberulent ; 

 its lobes somewhat linear-filiform and hardly widened at base (sometimes 18 Imes long), 

 barely half the length of the elongated (fully 2 inch) tube of the white corolla, the throat 

 of which is funnelform. — A', tnhijlora, LeConte in Ann. Lye. N. Y. i. 142, not IIBK. 

 Dipleracunllais iioclijfwiis, Nees in DC. I.e., partly; Chapm. Fl. .304. — Low pine-barrens. 

 Lower Georgia, LeConte. W. Florida, Rugel, Chapman, &c. S. Mississippi, Imjalls. Night- 

 blooming ? 



R. ciliosa, Pursh. Usually hirsute with long spreading hairs, especially the (about inch 

 long) flliform attenuate calyx-lobes : leaves oblong or the lower oval (an inch or two long), 

 almost sessile: tube of the blue corolla commonly twice the length of the calyx and of the 

 limb with the obconical throat, the whole not rarel\' 2 inches long. — Fl. i 420; Gray, Man. 

 ed. 5, 339. Dipleracantlms ciliosns, Nees in Linn. xvi. 204, & Prodr. 1. c, with var. In/liritlus, 

 mainly. — Dry ground, Michigan and Illinois to Florida and Louisiana : in various forms. 



Var. longiflora. I'ubesccnce sometimes cinereous, with or without long hirsute 

 hairs : stems sometimes flowering when 2 or 3 inches high, sometimes tall and slender : 

 leaves narrowly oblong or the lower oliovate-spatulate, usually small ; slender tube of 

 corolla 1 or 2 inches long. — R. hitmilis, Nutt. in Trans. Am. Phil. Soc. n. scr. v. 182. Jus- 

 tir.ia, with char. & no name, Torr. in Ann. Lye. N. Y. ii. 2."..5. iJlplcrucanthns Dnimmondii, 

 Torr. & Gray in PI. Lindh. i. 50. D. nodijlorm, Nees, in DC 1. c, as to Texan pi. and var. 

 hiimi/is, also D. rihosiis, var. hijJiridns, in part. — Louisiana, Arkansas, and Texas. 



Var. hybrida. Either hirsute or cinereous-pubescent, sometimes almost velvety- 

 pubescent : leaves from ovate to oblong, mostly with distinct petioles : tube of the corolla 

 shorter than the throat and limb, sometimes shorter than the linear-setaceous calyx-lobes, 

 which often want the hirsute hairs. — /?, /ii/brida, Pursh, Fl. ii. 420; LeConte in Ann. 

 Lye. 1. c. R. slrepens, L. as to Dill. Elth. t. 240, at least in part. R. hirsuta, Ell. Sk. ii. 100. 

 Dfpleracnnthtts riliosns, var. /i;/hridiis, in part, & D. MItduUianus, Nees, 1. c. D. strepens, var. 

 Dillcnli, Nees, 1. c. -— S. Carolina to Florida. Verges to the two following species. 



Var. ambigua. Sparingly hirsute-pubescent or glabrate : leaves ovate-oblong, usu- 

 ally short-pctioled, larger: tube of corolla little exceeding the liardly hirsute calyx.— 

 Dipteracauthus ciliosns, \nr.pnrrlJ1onis,'SL'CS, 1. c. — Virginia and Kentucky to Alabama. As 

 if a hybrid between /'. ciliosa and R. slrcprns, with aspect of the latter, but the calyx of 

 the former. 



R. Drummondiana. Cinereous-puberulent, tall : leaves ovate, 3 to 6 inches long, peti- 

 oled : filiform-setaceous and canescent calyx-lobes (commonly an inch or more long) more 

 or less shorter than the tube of the (inch and a half long) covoWn. — Dipleracantlms Drum- 

 mondianus, Nees in DC. 1. c. D. Lindheimcrianus, Schcele in Linn. xxi. 764, 1848. — Texas, 

 Drnmmond, /Jiid/teiincr. 



