328 LOTtRAGlNACLyE. (BORAGE FAMILY.) 



1. T. Canadense, I* Stem tomentose, erect, simple or branched; leaves 

 short-petioled, ovate-lanceolate, acute, serrate, pubescent above, white-velvety 

 beneath ; flowers mostly alternate, in a long hoary spiked raceme, longer than 

 the subulate bracts; calyx bell-shaped. (T. Virginicum, L.) — Swamps and 

 low ground, Florida to Mississippi, and northward. July -Sept. 1J. — Stem 

 2°- 3° high. Leaves 2'- 6' long. Flowers purplish. 



Oiideii 95. BORUAGINACEiE. (Borage Family.) 



Herbs or shrubs, with terete or irregularly angled stems, and alternate 

 entire exstipulate mostly rough-hairy leaves. Flowers usually in 1 -sided 

 spikes or racemes, which arc coiled in the bud. — Calyx free, 5-cleft or 

 5-parted, valvate in the bud, persistent. Corolla regular (except No. G). 

 hypogynous, 5-lobed, imbricated or (in Myosotis) convolute in the bud. 

 Stamens 5, equal, inserted on the tube of the corolla and alternate with 

 its lobes. Ovary 4-celled, with a single ovule in each cell. Style single. 

 Fruit various. Albumen scarce or none. Cotyledons iiat or folded. 

 Radicle superior. 



Synopsis. 



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

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

 heads or spikes. 



1. COIiDIA. Calyx opening regularly, not circumscissile. 



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

 fruit a 4-secded berry. Cotyledons flat. Albumen scanty. — Shrubs. 



2. EHKETIA. Style slender. Flowers corymbose 



3. TOUUNEFORTIA. 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 4 nutlets, each 1-seeded. 

 o. IIKLIOI'IIYTI M. Fruit separating into 2 nutlets, each 2-seeded. 



Tribe IV. BORRAGE1!. 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. 

 ■*- Corolla irregular. 

 0. ECIIIUM. Corolla funnel-shaped, unequally lobed. 

 ■»- -i- Corolla regular 



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



8. LITHOSPERMUM. Lobes of the corolla ronnded. Nutlets smooth or rugose. 

 <l. MEUTKNSIA Lobes of the corolla rounded. Nutlets somewhat fleshy. 



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



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



11. CYNOGLOSSUM. Corolla funnel-shaped. Nutlets depressed. 



