358 BORRAGINACE.E. (BORAGE FAMILY.) 



TRIBE. IV. BORRAGE^E. Ovary deeply 4-parted, enclosing the base of the simple 

 style. Fruit of 1 - 4 one-seeded nutlets. Herbs. 



* Throat of the corolla naked. Nutlets not hispid. 

 t- Corolla irregular. 



5. ECHIUM. Corolla funnel-shaped, unequally lobed. 



+- -t- Corolla regular. 



6. ONOSMODIUM. Lobes of the corolla erect, acute. Nutlets smooth and stony. 



7. LITHOSPERMUM. Lobes of the corolla rounded. Nutlets smooth or rugose. 



8. MERTENSIA. Lobes of the corolla rounded. Nutlets somewhat fleshy. 

 0. MYOSOTIS. Lobes of the corolla convolute in the bud. Nutlets smooth. 



* * Throat of the corolla closed with scales. Nutlets hispid. 



10. CYNOGLOSSUM. Corolla funnel-shaped. Nutlets depressed, spreading. 



11. ECHINOSPERMUM. Nutlets erect, hispid on the back or margins. 



1. CORDIA, Plum. 



Calyx ovate or bell-shaped, 4 - 5-toothed, not circumscissile. Corolla funnel- 

 or salver- form, 4-5 lobed. Stamens 4-5. Ovary entire, 4-celled. Style ter- 

 minal, twice 2-cleft, mostly e.xserted. Drupe ovate or globose, pulpy, 1-4- 

 seeded, commonly enclosed iu the enlarged calyx. Trees or shrubs. Leaves 

 toothed or entire. Flowers cymose or capitate. 



1. C. bullata, L. Rough throughout with white bristly hairs ; leaves 

 oblong-ovate, serrate-toothed, rugose, abruptly petioled ; flowers capitate, on 

 peduncles which are shorter than the leaves, and nearly terminal, but elon- 

 gated and lateral in fruit ; calyx ovoid, the subulate bristly teeth spreading ; 

 corolla short, hairy in the throat; stigmas club-shaped; drupe 1-seeded. 

 South Florida. Leaves %' - l long. Heads 4" - 5" in diameter. 



2. C. Sebestena, L. (GEIGER TREE.) Rough-pubescent ; leaves large 

 (4' -8' long), ovate; cyme loose, many-flowered; calyx cylindrical, 2-5- 

 toothed, half as long as the tube of the large red corolla ; stamens 5-8. 

 Keys of South Florida. A large shrub. 



2. BOURRERIA, P. Browne. 



Calyx ovoid or globular, 2 -5-toothed. Corolla bell-shaped, 4-5-lobed. 

 Fruit drupaceous, composed of four more or less separable 1-seeded nutlets. 

 Tropical shrubs, with entire leaves, and corymbose white flowers. 



1. B. Havanensis, Miers. Smooth; leaves obovate or oblong-obovate ; 

 corymb many-flowered, divaricate ; calyx leathery, the teeth acute, pubescent 

 on the margins; stigmas depressed; nutlets 4, 1-seeded, finely furrowed on 

 the back. South Florida. A small tree. Leaves l-J'-S' long. Flowers 

 fragrant. 



2. B. Radula, Don. Stem smooth ; leaves obovate, very rough, and at 



length tubercular-hispid above ; corymb few-flowered ; calyx 4 - 5-toothed ; 

 lobes of the corolla rounded, wavy ; drupe ovate, separable into four 1-seeded 

 nutlets. South Florida Leaves 1'- 1 J' long. Corolla 6" long. 



