862 FLORA. 



at least twice as long as the lobes; capsule compressed- globose, 3 mm. broad, some* 

 what didymous, its upper half free, shorter than the subulate-linear calyx-lobes. 

 In open places, Md. to Ky., Ga. and Ala. May-Sept. 



Houstonia purpurea pub^scens Britton. Pubescent ; leaves lanceolate to oblong- 

 lanceolate. Va. 



7. Houstonia ciliolata Torr. Fringed Houstonia. (I. F. f. 3398.) 

 Perennial, tufted, 1-2 dm. high. Lower and basal leaves petioled, thick, 1- 

 nerved, obovate or oblanceolate, obtuse, 1-2 cm. long, their margins conspicuously 

 ciliate; stem leaves oblong or oblanceolate, sessile or nearly so; pedicels filiform, 

 2-8 mm. long; corolla funnelform, lilac or pale purple, about 6 mm. long, the lobes 

 about one-third the length of the tube; capsule little compressed, obscurely didy- 

 mous, 3 mm wide, overtopped by the linear-lanceolate calyx-lobes. On rocks and 

 shores, Me (?), Ont. to Mich., Penn., W. Va., Ky. and Ark. May-Aug. 



8. Houstonia longifolia Gaertn. Long- leaved Houstonia. (I. F. f. 3399.) 

 Perennial, usually tufted, erect, glabrous, 1.2-2.5 dm. hhg n « Basal leaves spatu- 

 late or oblanceolate, obtuse, not ciliate, short-petioled ; stem leaves linear or linear- 

 oblong, 1 -nerved, 1-2.5 cm. long, 2-5 mm. wide; corolla pale purple or nearly 

 white, 5-6 mm. long, its lobes about one-third the length oi the tube; capsule little 

 compressed, globose-ovoid, about 2 mm. in diameter, its upper half free and much 

 exceeded by the subulate calyx-lobes. In dry open places, Me. and Ont. to Mani- 

 toba, Ga. and Mo. May-Sept. 



9. Houstonia tenuifolia Nutt. Slender-leaved Houstonia. (I. F. f. 

 3400.) Perennial, somewhat tufted, slender, branching, erect, glabrous, 1.5-3 dm. 

 high, sometimes pubescent below. Basal and lowest stem leaves ovate or oval, 

 obtuse, petioled, 8-12 mm. long; upper leaves narrowly linear or filiform, blunt, 

 1-3 cm. long, 1-3 mm. wide; pedicels filiform, 4-12 mm. long; corolla purple, 

 narrow, 4-6 mm. long, its lobes short; capsule compressed-globose, didynamous, 

 about 2 mm. in diameter, its upper half free and slightly exceeded by the subulate 

 caly%-\obes. In dry soil, Va. to Ohio, N. Car. and Tenn. May-July. 



10. Houstonia angustifolia Michx. Narrow-leaved Houstonia. (I. F. f. 

 3401.) Perennial by a deep root, erect, stiff, glabrous, usually branched, 3-6 dm. 

 high. Leaves linear, 1-3.5 cm - l° n g> 2_ 4 mm - wide, or the lowest narrowly spatu- 

 late, usually with smaller ones fascicled in the axils, or on short axillary branches; 

 corolla white or purplish, between funnelform and salverform, about 4 mm. long, 

 its lobes shorter than the tube; capsule compressed-obovoid, 3 mm. wide, its sum- 

 mit free and scarcely exceeded by the calyx-lobes. In dry open places, 111. to 

 Mo., Kans., Tex., Tenn. and Fla. May-July. 



2. OLDENLANDIA L. 



Herbs, with opposite leaves, and small white or pink flowers. Calyx-tube obo- 

 void or subglobose, the limb 4-toothed. Corolla rotate or salverform, 4-lobed. Sta- 

 mens 4, inserted on the throat of the corolla; anthers oblong. Ovary 2-celled; 

 ovules numerous in each cavity; style slender, 2-lobed. Capsule small, ovoid, top- 

 shaped, or hemispheric, wholly adnate to the calyx -tube, loculicidally dehiscent at 

 the summit. Seeds angular, not peltate; endosperm fleshy; embryo club-shaped. 

 [Named for H. B. Oldenland, a Danish botanist.] About 175 species, mostly of 

 tropical distribution. Besides the following, 2 others occur in the Southern States 

 and 1 in N. Mex. 



1. Oldenlandia uniflora L. Clustered Bluets. (I. F. f. 3402.) Annual, 

 weak, usually tufted, more or less hirsute-pubescent, diffuse or ascending; stems 

 2.5-35 cm. long. Leaves short-petioled or sessile, mostly thin, entire, 3-5-nerved, 

 ovate, oblong, or oval, acute at the apex, narrowed at the base, I-2.5 cm. long; 

 flowers sessile or nearly so, white, about 2 mm. broad, terminal and axillary, clus- 

 tered or solitary; calyx hirsute, hemispheric in fruit, the ovate or oval lobes erect 

 and nearly equalling the tube. In low grounds, N. Y. to Fla. and Tex. Also in 

 Cuba. June-Sept. 



3. CEPHALANTHUS L. 



Shrubs, or sometimes small trees, with opposite or verticillate entire deciduous 

 leaves, and densely capitate bracteolate small white or yellow flowers. Calyx- 

 tube obpyramidal, its limb with 4 obtuse lobes. Corolla tubular-funnelform, with 



