GENUS I. MADDER FAMILY. 253 
6. Houstonia purptirea L. Large Houstonia. 
Venus’-pride. Fig. 3917. 
Houstonia purpurea L. Sp. Pl. 105. 1753. 
Hedyotis purpurea T.& G. Fl. N. A. 2: 40. 1841. 
Oldenlandia purpurea A. Gray, Man. Ed. 2, 173. 1856. 
Houstonia purpurea pubescens Britton, Mem. Torr. Club 4: 
125. 1894. 
Perennial, stout, erect, tufted, branched or simple, 
glabrous or pubescent, 4’-18’ high. Leaves ovate or 
ovate-lanceolate, sessile, or the lower ones short- 
petioled, 3-5-nerved and pinnately veined, obtuse or 
acute, 4’-2’ long, 3-15” wide, the margins often ciliate; 
flowers in terminal cymose clusters; pedicels 1-4” 
long; corolla purple or lilac, funnelform, 3-4” long, 
the tube at least twice as long as the lobes; capsule 
compressed-globose, 13”” broad, somewhat didymous, its 
upper half free and considerably shorter than the subu- 
late-linear calyx-lobes. 
In open places, Maryland to Iowa, Kentucky, Missouri, 
Georgia, Alabama and Mississippi, especially in the moun- 
tains. May-Sept. 
7. Houstonia ciliolata Torr. Fringed Hous- 
tonia. Fig. 3918. 
Houstonia ciliolata Torr. Fl. N. U.S. 1: 173. 1824. 
Houstonia purpurea var. ciliolata A. Gray, Man. Ed. 5, 
212, 1867. 
Perennial, tufted, erect or ascending, 4’-7’ high. 
Lower and basal leaves petioled, thick, 1-nerved, obo- 
vate or oblanceolate, obtuse, 6-10” long, their margins 
conspicuously ciliate; stem leaves oblong or oblanceo- 
late, sessile or nearly so; flowers in corymbed cymes; 
pedicels filiform, 1’-4” long; corolla funnelform, lilac 
or pale purple, about 3” long, the lobes about one- 
third the length of the tube; capsule little compressed, 
obscurely didymous, 13” wide, overtopped by the linear- 
} lanceolate calyx-lobes. : ‘ 
On rocks and shores, Ontario to Minnesota, south to 
Pennsylvania, West Virginia, Kentucky and Arkansas. 
May-Aug. 
8. Houstonia longifolia Gaertn. Long- 
leaved Houstonia. Fig. 3919. 
see conee longifolia Gaertn. Fruct. 1: 226. pl. 49. f. 8. 
I . 
er purpurea var. longifolia A. Gray, Man. Ed. 
5, 212. 1868. 
Perennial, usually tufted, erect, glabrous or pu- 
berulent, 5’-10’ high. Basal leaves spatulate or ob- 
lanceolate, obtuse, not’ ciliate, very short-petioled ; 
stem leaves linear or linear-oblong, acute or obtuse, 
I-nerved, 6”’-12” long, 1’-23” wide; flowers in 
corymbed cymes; calyx-lobes subulate; corolla pale 
purple or nearly white, 23’-3” long, its lobes about 
one-third the length of the tube; capsule little com- 
pressed, globose, ovoid, about 1” in diameter, its upper 
half free and much exceeded by the subulate calyx- 
lobes. 
In dry open places, Maine and Ontario to Manitoba, 
Saskatchewan, Georgia, Mississippi and Missouri. May- 
Sept. 
