Ruellia 



ACANTHACEAE 



865 



o 5o 



Map 1890 



Utnculana macrorhiza Le Conte 



Corolla convolute in the bud, nearly regular; stamens 4; seeds densely short- 

 pubescent 7965. Ruellia, p. 865. 



Corolla imbricate in the bud, bilabiate; stamens 2; seeds prickly 



8031. Diapedium, p. 866. 



Plants growing in the water or on muddy shores and bars in streams; leaves linear- 

 •lanceolate, elongated, gradually acute or acuminate 8094. Dianthera, p. 866. 



7965. RUELLIA [Plunder] L. Ruellia 



Calyx lobes linear-filiform, much exceeding the capsules, generally 2-2.5 cm long and 

 rarely 1 mm wide; plants villous and sometimes with shorter, recurving hairs. 



Corolla tube much longer than the calyx lobes 1. R. caroliniensis. 



Corolla tube shorter or nearly as long as the calyx lobes; flowers smaller than those 



of the species la. J?, caroliniensis var. parviflora. 



Calyx lobes linear-lanceolate, about equaling the capsules, generally 1.5-2 cm long; 

 plants glabrate or sparingly pubescent. 



Flowers solitary in the axils of the leaves; none of the flowers cleistogamous 



2. R. strepens. 



Flowers clustered in the axils of the leaves: some or all of the flowers cleistogamous; 

 calyx lobes usually much more glandular 2a. R. strepens f. cleistantha. 



1. Ruellia caroliniensis (Walt.) Steud. (Blake. Neglected names in 

 Walter's Flora. Rhodora 17: 137. 1915.) (Ruellia ciliosa Pursh.) Hairy 

 Ruellia. Map 1892. This species prefers a dry, sandy soil and is found 

 mostly in open places along roadsides and railroads, on dry, open wooded 

 slopes, and in prairie habitats. 



N. J. to Mich, and Kans., southw. to Fla. and La. 



la. Ruellia caroliniensis var. parviflora (Nees) Blake. Map 1893. Has 

 the habitat of the species. 



Md. to Ind., southw. to Fla. and Tex. 



2. Ruellia strepens L. Smooth Ruellia. Map 1894. This species pre- 

 fers moist, alluvial soil in open woodland along streams, but is also found 

 in moist, open woodland and rarely in moist, open places. It is sometimes 

 found in dry soil on the slopes of high, wooded banks and ridges. 



Pa. to Wis. and Kans., southw. to Fla. and Tex. 



