364 YERBEXACEAE. 



7. Heliotropium nanum Northrop, Mem. Torr. Club 12: 61. 1902. 



Shrubby, usually mucli branched, densely strigose-canescent, 8-15 cm. 

 high, the branches nearly erect or ascending, slender. Leaves oblong or elliptic, 

 sessile, appressed, about 2 mm. long, acute; flowers solitary at the axils, 

 scattered, a little shorter than the leaves; calyx-lobes lanceolate, acute; 

 corolla white, somewhat longer than the calyx, its lobes short, ovate-oblong; 

 stamens borne at about the middle of the corolla-tube; style short; stigma 

 annular; fruit depressed-globose, 4-lobed, separating into 4 pubescent nutlets. 



Savannas, white-lands and sand dunes, Little Harbor Cay, Andros, New Provi- 

 dence. Endemic. Low Ashy Heliotrope. 



8. Heliotropium inaguense Eritton, Bull. N. Y. Bot. Gard. 4: 122. 1905. 



A low shrub, 5-20 cm. high, intricately much-branched, very densely 

 appressed-strigose all over with nearly Vvhite hairs. Leaves opposite, ascending 

 or appressed, lanceolate or oblong-lanceolate, 3-5 mm. long, about 1 mm. 

 wide, sessile, acutish, somewhat revolute-margined, mostly longer than the 

 internodes ; flowers few, solitary and very nearly sessile in the upper axils ; 

 sepals similar to the upper leaves; corolla white, its tube 2 mm. long, its 5 ovate 

 acute lobes about 1 mm. long, spreading; stamens nearly sessile on the corolla- 

 tube below the middle; style very short, stout; stigma 4-lobed. 



White-lands, scrub-lands and sand dunes, Exuma Chain, Eleuthera. Cat Island. 

 Conceution Island, Little San Salvador, Long Island, Fortune Island, Great Ragged 

 Island, Caicos, Turk's Islands and Inagua. Endemic. Ixagua Heliotrope. White 



PUSSLEY. 



9. Heliotropium diffusum Britton, Bull. X. Y. Bot. Gard. 4: 122. 1905. 



Perennial by a slender deep root. Stem slender, 4 cm. high or less, the 

 bpanches difi'usely spreading, very slender, longer than the stem, 8 cm. long or 

 less, appressed-strigose ; leaves linear, 3-4 mm. long, about 1 mm. wide, sessile, 

 acute, appressed-strigose; flowers white, minute, enclosed in the tufts of upper 

 leaves; sepals lanceolate to ovate-lanceolate, acute, about 2 mm. long, very 

 hairy; ovary deeply 4-lobed; fruit 4-lobed, depressed, about 1 mm. wide, and 

 about one half as high as wide, the very short style capped by a broad abruptly- 

 tipped stigma. 



Moist scrub-lands. Rum Cay, Acklin's, Mariguana, South Caicos, Grand Turk, 

 Sand Cay, Little Inagua. Endemic. Diffuse Low Heliotrope. 



10. Heliotropium Nashii Millsp. Field Mus. Bot. 2: 309. 1909. 



Heliotropium hrevicaule Urban, Repert. 13: 474. 1915. 



Diffusely branched, perennial, the branches very slender, prostrate or 

 nearly so, the young twigs appressed-pubescent. Leaves sessile, ovate, about 

 2 mm. long and 1 mm. wide, acute, appressed-pubescent on both sides, the 

 margins flat ; flowers solitary and sessile in the upper axils ; calyx a little more 

 than 1 mm. long, its lobes ovate-lanceolate, acutish; corolla white, 1.5-2 mm. 

 broad, its lobes ovate, acute; fruit about 1 mm. in diameter. 



Scrub-lands, Inagua. near Matthew Town. Endemic. Referred by Hitchcock to 

 H. microphyllum Sw. Nash's Heliotrope. 



Family 7. VERBENACEAE J. St.Hil. 



Vervaix Family. 



Herbs, shrubs or some tropical genera trees, with opposite verticil- 

 late or rarely alternate leaves, and perfect irregular, or sometimes regu- 

 lar flowers, in sjDikes, racemes, cymes or panicles. Calyx inferior, mostly 



