326 ACANTHACE^. Ruellia. 



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 in herb., unpublished.)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

 ./. Hale. Arkansas, Birjelow, Mrs. Harris. Corolla about an inch and a half long. 



* * * Flowers subsessile and commonly glomerate in the axils, when short-peduncled with 

 foiiaceoiis ])iimary bracts or bractlets: stamens of almost equal length: capsule at most 8-seeded : 

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

 uncoiling spiricles. 



-1— Suffrutescent : leaves rigid: corolla white: capsule oblong, with hardly any stipe-like base. 

 R. Parryi. A span high, much branched from the lignescent 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 cystolitbs) : flowers mostly solitary in the 

 axils, on a peduncle siiorter than the jjetiole or subsessile : bractlets oblong, surpassing 

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

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

 lobes. — Dipleracanthns siiffrulicosus, Torr. Bot. Mex. Bound. 122 (but there is a R.sujfru- 

 iicosa, Woxh.). — South-western borders of Texas: at Presidio del Norte, Panv/, in flower. 

 Valley of the Pecos, in fruit, Wriyht, 



•(— -1— Herbaceous: stems mostly simple: corolla usually blue or violet, except in R. tubljlura: 

 capsule more broadly clavate and obcompressed. 



++ Calyx-lobes Hliform-attenuate, longer than the capsule: cleistoganious flowers seldom seen. 



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

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

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

 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 funnelfcn-m. — R. htbijhra, LeConte in Ann. Lye. N. Y. i. 142, not HBK. 

 Dqileracanlhus )iocHJJon(s, Nees in DC. I.e., partly; Chapm. Fl. 304. — Low pine-barrens. 

 Lower Georgia, LeConle. W. Florida, Rwjel, Chapman, &c. S. Mississippi, Iwjalls. Night- 

 blooming ? 



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

 long) filiform 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 rarely 2 inches long. — Fl. i. 420 ; Gray, Man. 

 ed. 5, 3;j9. Diplerucanlhus ciliosus, Nees in Linn. xvi. 294, & Prodr. 1. c, with var. hijbrldus, 

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



Var. longiflora. Pubescence 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 obovate-spatulate, usually small : slender tube of 

 corolla 1 or 2 niches long. — R. humilis, Nutt. in Trans. Am. Phil. Soc. n. ser. v. 182. Jus- 

 tirla, with char. & no name, Torr. in Ann. Lye. N. Y. ii. 235. Dijileracaiil/ius Driimmondii, 

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

 hiimilis, also /) riliosiis, var. lujhridus, 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 peti<des : tube of the corolla 

 shorter than the throat and limb, sometimes shorter than the linear-setaceous caly.x-lobcs, 

 which often want the hirsute hairs. — R. Ii>/hrida, Pursh, Fl. ii. 420 ; LeConte in Ann. 

 Lye. 1. c. R. shrpens, L. as to Dill. Elth. t. 240, at least in part. R. Idrsuta, Ell. Sk. ii. 109. 

 D;i>leracnnthm ciliosux, var. hi/hridiiff, in part, & D. ^fit(•htllia)uts, Nees, 1. c. D. strepens, var. 

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



Var. ambigua. Sparingly hirsute-])ubescent or glabrate : leaves ovate-oblong, tisu- 

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

 Dipterorarpns ciHomis, var. jiarrifloni.t^'SvQS, 1. c. — Virginia and Kentucky to Alabama. As 

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

 the former. 



R. Drummondiana. Cinereous-pubernlent, tall : leaves ovate, 3 to G inches long, peti- 

 oh'd : flliform-sc'taceous and canescent calyx-lobes (commonly an inch or more long) more 

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

 vwudianus, Nees in DC. 1. c. D. Lindlieimerianus, Schcele in Linn. xxi. 704, 1848. — Texas, 

 DniiiiiHOitd, Lindhcimer. 



