BOBAGINACEAE. 363 



cm. long or less, acute or short-acuminate at the apex, narrowed at the base, 

 the petioles 5-15 mm. long; spikes solitary or 2 together, slender, 5-15 cm. 

 long; calyx-lobes acute; corolla white, bearded in the throat, about 2 mm. 

 broad, its tube about as long as the calyx; fruit didymous, depressed, 3-4 mm. 

 broad ; finely pubescent. 



Waste grounds, street sides, coppices, and scrub-lands, Great Sturrup, Little 

 Harbor Cay, North Cat Cay, Andros, New Providence, Eleuthera, Cat Island, Wat- 

 ling's, Great Guana, Great Exuma, Long Island, Great Ragged Island, Fortune 

 Island, East Caicos and Inagua : Florida ; West Indies and continental tropical 

 America. HORSE-BUSH. SORE-BUSH. SCORPION-TAIL. 



3. Heliotropium curassavicum L. Sp. PI. 130. 1753. 



Annual, fleshy, more or less glaucous, diffuse, the branches 1.5-4.5 dm. 

 long. Leaves linear, or linear-oblong, entire, inconspicuously veined, 2-5 cm. 

 long, 3-G mm. wide, obtuse, narrowed into petioles, or the upper sessile; 

 scorpioid spikes dense, bractless, mostly in pairs; flowers about 4 mm. broad; 

 calyx-segments acute; corolla white with a yellow eye or changing to blue; 

 stigma umbrella-shaped; anthers acuminate; fruit globose. 



Salinas, sea-beaches, margins of salt-ponds, Gun Cay, Andros, New Providence, 

 Eleuthera, Little San Salvador, Cat Island, Watling's, Great Exuma, Long Island, 

 Fortune Island, Acklin's, Grand Turk, Inagua, and Cay Sal : 'Bermuda ; Florida to 

 Texas; coasts of the West Indies and continental tropical America. SEASIDE 

 HELIOTROPE. POND-WEED. 



4. Heliotropium inundatum Sw. Prodr. 40. 1788. 



Annual, often branched from the base, 16 dm. tall, the stems and leavea 

 gray-strigose. Leaves oblong to oval or oblong-spatulate, 2-5 cm. long, obtuse 

 at the apex, narrowed at the base, short-petioled ; spikes 1 or few, slender, at 

 length 3-6 cm. long; calyx 2-3 mm. long, its lobes linear-lanceolate; corolla 

 white, about as long as the calyx, its lobes lanceolate; nutlets subglobose, about 

 1 mm., in diameter. 



Dry soil, Acklin's Island, Inagua : Louisiana to California, Panama and Para- 

 guay ; Cuba ; Hispaniola ; Porto Rico ; Jamaica : Trinidad. Recorded from Guade- 

 loupe. SLENDER HELIOTROPE. Erroneously called WILD THYME. 



5. Heliotropium Eggersii Urban, Symb. Ant. 5: 481. 1908. 



Annual, branched from the base, procumbent, 2 dm. long or less, the 

 pubescence appressed or spreading. Leaves oblong-elliptic, 5-10 mm. long, 

 densely sericeous, acute or short-acuminate at the apex, narrowed at the base, 

 the slender petioles 1-3 mm. long; spikes solitary or rarely in pairs, 4 cm. long 

 or less, many-flowered, pilose; sepals unequal, four of them linear and 1 mm. 

 long, the fifth oblong and 1.5 mm. long; corolla 1.5 mm. long, its lobes sub- 

 orbicular, much shorter than the tube; nutlets about 1.3 mm. in diameter, 

 strigose, twice as wide as long. 



Fortune Island. Endemic. EGGERS' HELIOTROPE.. 



6. Heliotropium ternatum Vahl, Symb. 3: 21. 1794. 



Tournefortia humilis L. Sp. PI. 141. 1753. Not H. humile Lam. 1791. 



A strigose-pubescent, bushy -branched shrub 6 dm. high or less, the branches 

 slender, ascending. Leaves lanceolate or linear, sessile, subverticillate in 3's, 

 or opposite, or alternate, 1-3 cm. long, 1.5-8 mm. wide, acutish, revolute- 

 margined, rough-strigose on both sides; flowers white, in short terminal spikes; 

 calyx about 3 mm. long, its lobes ovate, acute; corolla-tube somewhat longer 

 than the calyx, the limb 3-4 mm. wide; nutlets subglobose. 



Scrub-lands, Great Ragged Island : Cuba to Virgin Gorda and Martinique ; con- 

 tinental tropical America. BUSHY HELIOTROPE. 



