¢ 
BORAGINACEAE. Vor, III. 
2. Heliotropium curassavicum L. Sea- 
side Heliotrope. Fig. 3503. 
Heliotropium curassavicum L. Sp. Pl. 130. 1753. 
Annual, fleshy, glabrous throughout, more or 
less glaucous, branched, diffuse, the branches 
6-18 long. Leaves linear, or linear-oblong, 
entire, very inconspicuously veined, 1’-2’ long, 
14-3” wide, obtuse at the apex, narrowed into 
petioles, or the upper sessile, sometimes with 
smaller ones fascicled in the axils; scorpioid 
spikes densely flowered, bractless, mostly in pairs; 
flowers about 2” broad; calyx-segments lanceo- 
late, acute; corolla white with a yellow eye or 
changing to blue; stigma umbrella-shaped ; anthers 
acuminate; fruit globose, at length separating 
into 4 nutlets. 
On sandy seashores, Delaware to Texas and Mex- 
ico. Widely distributed in saline and maritime soil 
in the West Indies, South America and the Old 
World. In ballast about the northern seaports. 
May-Sept. 
3. Heliotropium spathulatum Rydb. Spatulate- 
leaved Heliotrope. Fig. 3504. 
H. spathulatum Rydb. Bull. Torr. Club 30: 262. 1903. 
Perennial, glabrous, fleshy, glaucous, branched, 1°-14° 
high, the branches ascending. Leaves spatulate, indis- 
tinctly veined, 2’ long or less, obtuse at the apex; 
scorpioid spikes 2-5; flowers 3’-4” broad, white, or 
bluish; calyx-segments ovate-lanceolate, acute; fruit 
rather larger than that of H. curassavicum. 
Prairies, plains and meadows, Iowa to North Dakota, 
Assiniboia, Chihuahua and California. June-Sept. 
4. Heliotropium tenéllum (Nutt.) Torr. 
Slender Heliotrope. Fig. 3505. 
Lithospermum tenellum Nutt. Trans. Am. Phil. Soc. (II.) 
5: 188. 1833-37. 
H. tenellum Torr. in Marcy’s Rep. 304. pl. 14. 1853. 
Annual, strigose-canescent; stem erect, slender, 
paniculately branched, commonly leafless below, 
6-18’ high. Leaves linear, entire, 3’-13’ long, 1-2” 
wide, narrowed at both ends, sessile, or the lower 
petioled; flowers white, about 24” long, sessile at the 
ends of short lateral branches, bracted by I or 2 
leaves; calyx-segments unequal, the 2 or 3 larger 
ones about as long as the corolla; corolla-tube canes- 
cent, slightly longer than the limb, its lobes entire; 
anthers obtuse; stigma subulate-tipped; fruit de- 
pressed, 4-lobed, strigose-pubescent, separating into 
4 1-seeded nutlets. 
In dry soil, Kentucky to Kansas, south to Alabama,’ 
Texas and New Mexico. April—Aug. 
