588 ACANTHACE.E. Raellia. 



1. RUELLIA, Limi. 

 Calyx 5-parted into narrow and nearly equal divisions. Corolla broadly I'unuel- 

 form, almost regularly 5-lobed ; the lobes broad and Hat, convolute in the bud. 

 Stamens 4, didynamous, included : lUanients united at the base in pairs : anthers 

 sagittate, 2-celled ; the cells nearly parallel and equal. Capsule obloiig or club- 

 shaped, nearly terete, 8- IG-seeded. Seeds flat, rounded or somewhat lieart-siiai)ed. 

 — Perennials and chiclly herbs; with ovul or oblong and petioled leaves, and rather 

 largo blue or i)urple Uowers ; many of the most fertile ones never unfolding, being 

 close- fecundated in the hud. 



1. R. tuberosa, Linn. Pubescent, 2 or 3 feet high: loaves oval or ovate: 

 llowers in a nearly naked tcirminul panicle: corolla (1| to 2 inches long) with a 

 slender tube suddenly expantled into an ample throat : stigma single (the other fork 

 wanting) : capsule 12 — 16-seeded. — Cryphiacaathus liurbadeasis, Nees, 



California, Coidter. But his plant (No. 556) very likely collected in Arizona, whence thia 

 species extends to Texas, and is common in ilcxico, W. Indies, kc. 



2. BERGINIA, Harvey. 



Calyx 5-parted into narrow chartaceous and striate nearly equal divisions. Corolla 

 with tube about equalling the calyx and the irregular rather bilabiate limb ; upper 

 lip nearly erect, 2 parted, the lobes oblong, interior in the bud ; lower longer and 

 spreading, 3-parted or eleft ; the lobes somewhat obovate, the middle one with a 

 bearded patch at and below its base. Stamens 4, inserted in the throat : filaments 

 subulate, the anterior pair bearded inside next the anther : anthers ovate-lanceolate, 

 tho acute tips at first lightly cohering by a minute board. Stylo thickened at aj)ex: 

 stigma naked, truncate and a little cui)ped. Caps\do not at all stalk-liko or nar- 

 ntwod at base, ovate, appurenlly thin-walled and not compressed, 4-8eodi!d from 

 near tho base. — A single species. 



1. B. virgata, Harvey, in herb. Apparently a low and somewhat shrubby 

 plant, minutely puberulent, with slender branches : leaves linear-obhjng, entire, 

 sessile or nearly so, scabrous (half an inch or so in length), with midrib prominent 

 underneath ; tlie upper reduced to ovate-lanceolate bracts of the loose interrupted 

 spike, barely o(iualling the 2-bracteolato calyx : corolla ajjjjarently white, less than 

 half an inch long. — l^jnth. & Hook. Gen. J'l. ii. lODG. 



California, No. (503, Cuallcr. Not sinco met witli ; more probably collected in Arizona or 

 within the borders of Mexico. 



3. BELOPERONE, Nees. 



Calyx equally 5-parted, subtended by a pair of small bractlets. Corolla tubular, 

 bilabiate ; the upper lip interior in the bud, concave, erect or arching, entire or 

 emarginato; the lower sprea<ling and 3-lobed. Stamens 2: anthers 2-celled ; tho 

 cells disjoined, one higher than the other, the lower one with a short spur at base. 

 Style filiform : stigma mostly entire. Capsule clavate, having a long empty stalk- 

 like base ; the short cells each 2-seeded. — ^lostly shrubs, of Tnqjieal America; 

 with flowers in spikes or racemes ; the briicts and bractlets small and narrow. — 

 Benth. & Hook. Gen. PI. ii. 1110. 



1. B. Californica, IJenth. Tomentose or hoary : stems shrubby, slender, often 

 becoming leafless : leaves ovate, round-oval, or somewhat cordate, nearly entire, 



