BORRAGINACE.E. (BORAGE FAMILY.) 357 



3. H. afQ.nis, Gray. Stem glabrous ; lobes of the calyx ovate. Other- 

 wise like the last, and growing in similar situations. — Mississippi, and 

 westward. 



4. H. ovata, Nutt. Spiny, closely pubescent ; stem branching near the 

 summit; leaves short (I'-l^' long), ovate ; flowers crowded at the end of the 

 branches ; calyx lobes lanceolate, villous, sliorter than the corolla ; stamens 

 exserted. — Central Georgia, and westward. — Stem l°-2° high. Corolla 1' 

 wide. 



5. NAM A, L. 



Calyx 5-parted. Corolla tubular-funnel-shaped, 5-cIeft. Stamens included, 

 the filaments equal : anthers reniform. Ovules numerous, pendulous. Styles 

 2, distinct. Capsule oblong, many-seeded, seemingly 2 celled by the meeting 

 of the placentte at the axis, 2- or at length 4-valved. Seeds pitted. — Diffuse 

 hairy herbs, with alternate entire leaves, and axillary and terminal single, 

 clustered, or cymose purple or white flowers. 



1. N. Jamaicensis, L. Pubescent ; stems prostrate, diffusely branched, 

 angled or slightly winged ; leaves spatulate-obovate, tapering into a petiole ; 

 flowers solitary or 2-3 together, short peduncled ; calyx lobes linear, ciliate, 

 as long as the corolla; capsule oblong. — South Florida. — Stem 12'- 18' 

 long. Leaves I' - r long. Corolla small, jnirple. 



Order 99. BOJFtRAGIKACE^. (Borage Family.) 



Herbs or shrubs, "with terete or irregularly angled stems, and alter- 

 nate entire exstipulate mostly rough-hairy leaves. Flowers usually in 

 1-sided spikes or racemes, which are coiled in the bud. — Calyx free, 

 5-cleft or 5-parted, valvate in the bud, persistent. Corolla regular 

 (except No. 6), hypogynous, 5-lobed, imbricated or (in Myosotis) con- 

 volute in the bud. Stamens 5, equal, inserted on the tube of the 

 corolla and alternate with its lobes. Ovary 4-celled, witn a single 

 ovule in each cell. Style single. Fruit various. Albu.men scarce or 

 none. Cotyledons flat or folded. Radicle superior. 



Synopsis. 



Tribe I. CORDIE^. Ovary undivided. Style terminal, twice 2-lobed at the apex. 

 Fruit a 4-celled drupe. Cotyledons folded. Albumen none. — Shrubs. Flowers in 

 heads or cymes. 



i. CORDIA. Calyx opening regularly, not circumscissile. 



Tribe II. EHRETIE^. Ovary undivided. Style terminal, 2-lobed at the apex. 

 Fruit a 4-seeded berry. Cotyledons flat. Albumen scanty. — Shrubs. 



2. BOURRERIA. Style slender. Flowers corymbose. 



3. TOURNEFORTIA. Style short. Flowers cymose or spiked. 



Tribe III. HELIOTROPES. Ovary undivided. Style terminal, simple. Fruit 

 separating into 2 or 4 nutlets. — Chiefly herbs. 



4. HELIOTROPIUM. Fruit separating into four l-seeded, or into two 2-seeded nutlets. 



