BOEAGINACEAE. 267 



3. Hydrofhyllum Qanadense L. M. p. 763. Woods. Summer. 



Bucks— Nockamixon. Lancaster— Peach Bottom (Ca,), York Furnace 

 (Cr.) (Le.), island in Susquehanna below Columbia (Pr.). 



2. MACBOCALYX Trew, 

 1. Maorooalyx Nyctblea (L.) Kuntze. M. p. 764. Moist soil. Spring. 

 Philadelphia — Girard, Point (Ja.). Bucks — Opposite Trenton (P.). 

 Lancaster— Safe Harbor, York Furnace (Pr.)-, 



3. PHACELJA Juss. 



Corolla with entire or merely crenulate lobes. 1. P. dubia. , 



Corolla with fimbriate lobes. 2. P. Purshii. 



1. Phacelia dubia (L.) Small. M. p. 765. Shaded banks. Spring. 



Bttcfc* r- Near Telford (Fr.). Lancaster — York Furnace, Columbia, 

 Porter (B. C). 



2. Phacelia Purshii Buckl. M. p. 765. Moist woods or thickets. Spring. 



M ontgomery— Walnut Hill (VP.). Lancaster— (P.). 



Family 5. BORAGINACEAE Lindl. Borage Family. 



Ovary entire or 2-4-grooved; style terminal. 1. Heliotropiwm. 



Ovary 4-divided or deeply 4-lobed, the style arising from the center. 



Flowers regular. ^ 



Nutlets armed with barbed prickles. 



Nutlets spreading or divergent, covered by the prickles. 



2. Cynoglossum. 

 Nutlets erect or incurved, the prickles on their, backs or mar- 

 gins. 3. La-ppula. 

 Nutlets unarmed. 



Nutlets attached laterally to the receptacle, sometimes just 

 above their bases. 

 Fruiting calyx not greatly enlarged nor membranous. 



4. Mertensia. 

 > Fruiting calyx much enlarged, membranous, veiny. 



5. Asperugo. 

 Nutlets attached to the receptacle by their very bases. 



Scar of the attachment small, flat. 



Corolla salverf orm or funnelformj its lobes rounded or 

 spreading. .-,.., 



, Bacemes not bracted; corolla- tube short. 



6. Myosotis. 

 Bacemes bracted; corolla-tube cylindric, usually 



slender.' 7; Lithospermum. 



Corolla tubular, its lobes erect, acute. 



8. Onosmodium. 

 Scar of attachment large, concave. 9. Symphytum. 



Flowers irregular. 



Stamens included, throat of the corolla closed by scales. 



JO. Lycopsis. ' 

 Stamens exserted; throat of the corolla dilated, open. 



11. Echium. 



1. HELIOTEOPIT7M L. Heliotrope. 



Fruit 4-lobed, each lobe separating as a 1-seeded nutlet. 



Plant rough-puberulent ; leaves oval. 1. H. Europaewk. 



Glabrous, fleshy; leaves linear or spatulate.i 2. H. Curassavicum. 



Fruit 2-lobed or of 2 carpels. 3. H. Indicum. 



