22 NORTH AMERICAN FLORA [VOLUME 32 
usually longer than the leaves; stipules 2-3 mm. long, the lobes usually long-bicuspidate, 
sometimes with numerous lobes or teeth, often white-hirsutulous; leaves sessile, the blades 
usually ovate-oblong or elliptic-oblong, 8-25 mm. long, 2.5—6 mm. wide, acute or acuminate at 
the apex, mucronulate, acute or obtuse at the base, yellowish-green, scaberulous on the margins 
and sometimes on the costa, the lateral veins usually obsolete; flowers solitary or densely clus- 
tered in the axils, sessile or nearly so; hypanthium less than 1 mm. long, glabrous, the calyx- 
lobes usually shorter, ovate-deltoid or oblong-ovate, acute, mucronate, scaberulo-ciliolate, 
approximate in fruit; corolla rotate, white, much shorter than the calyx-lobes; capsule sub- 
globose, 2 mm. long, bisulcate, smooth, glabrous; seeds minute, angulate. 
TYPE LocALity: Alabama. 
DISTRIBUTION: In wet sandy soil, Florida to Mississippi; Porto Rico. 
ILLUSTRATIONS: Mem. Accad. Bologna 2: pl. 17, f. 2; Contr. U. S. Nat. Herb. 6: #l. 8. 
9. Oldenlandia crystallina Roxb. Fl. Ind. 2: 443. 1824. 
Annual, 5-8 em. high, diffusely branched, the branches stout, angulate, scaberulous, the 
internodes shorter than the leaves; stipules about 1 mm. long, bicuspidate; petioles stout, 
1-3 mm. long; leaf-blades elliptic or lance-elliptic, 6-17 mm. long, 2.5-6 mm. wide, acute or 
obtuse at the apex, acute or obtuse at the base, thin, dark-green above and sparsely scaberulous, 
paler beneath and scaberulous along the costa, the lateral veins obsolete, the margins scaberu- 
lous; flowers axillary, solitary, or rarely on 2-flowered peduncles, the pedicels slender, 5 mm. 
long or shorter; hypanthium 1 mm. long, glabrous, the calyx-lobes about as long, triangular- 
lanceolate, acuminate, ciliolate, approximate and somewhat accrescent in fruit; corolla 
salverform, about equaling the calyx-lobes, white; capsule obovoid, 2.5 mm. long, shallowly 
bisulcate, angulate, glabrous; seeds minute, subangulate, blackish-brown. 
TYPE LOCALITY: Bengal. 
DISTRIBUTION: Adventive in Jamaica; native of India and the East Indies. 
10. Oldenlandia herbacea (I,.) DC. Prodr. 4: 425. 1830. 
Hedyotis herbacea I,. Sp. Pl. 102. 1753. 
Hedyotis commutata Schultes, in R. & S. Syst. Veg. Mant. 3: 134. 1827. 
Erect or procumbent annual, glabrous throughout, the stems usually much branched, 
2-10 dm. long, slender, subangulate, the internodes equaling or longer than the leaves; stipules 
2-3 mm. long, bicuspidate or tricuspidate; leaves sessile, spreading or reflexed, the blades 
usually linear, sometimes linear-lanceolate, 1.5—7 cm. long, 1-8 mm. wide, long-attenuate at the 
apex or rarely acute or acutish, acute to attenuate at the base, thin, pale beneath, the lateral 
veins usually obsolete; flowers axillary, solitary or clustered, the pedicels filiform, 8-25 mm. long, 
usually reflexed in fruit; hypanthium about 1.5 mm. long, the calyx-lobes about as long, lanceo- 
late, acuminate, distant in fruit, sometimes ciliolate; corolla salverform, white, about as long 
as the calyx-lobes; capsule depressed-globose, 2.5-3 mm. long, 3—4.5 mm. wide, shallowly 
bisulcate, smooth: seeds minute, pale-brown, subangulate, finely reticulate. 
TYPE LOCALITY: Ceylon. 
DISTRIBUTION: Honduras to Panama; West Indies; also in South America, Africa, India, and 
the East Indies. 
ILLUSTRATIONS: Rheede, Hort. Mal. 10: pl. 23, 35; Gaertn. Fruct. pl. 30; Lam. Tab. Encye. pl. 62. 
11. Oldenlandia callitrichoides Griseb. Mem. Am. Acad. II. 8: 506. 
1863. 
Prostrate perennial, forming dense mats, the branches filiform, glabrous, the internodes 
longer than the leaves; stipules minute, cuspidate; petioles slender, often as long as the blades; 
leaf-blades suborbicular or ovate-orbicular, 1.5-3.5 mm. long and broad, obtuse or broadly 
rounded at the apex, usually truncate at the base and abrupily short-decurrent, thin, bright- 
green, sparsely white-hirsutulous on the upper surface or glabrate, glabrous beneath, the lateral 
veins obsolete, the costa obscure; flowers axillary, solitary, the pedicels slender-filiform, 5—25 
mm. long, often flexuous; hypanthium less than 1 mm. long, the calyx-lobes ovate-triangular, 
obtuse or acutish, slightly separated in fruit, ciliolate; corolla salverform, white, about 2 mm. 
long, much exceeding the calyx-lobes; stamens usually exserted; capsule narrowly turbinate, 
