240 BORAGINACEAE. 



10-15 mm. long. Common, near dwellings or gardens, or in fence-rows. Nat. 

 of Eu. Early sum. MATRIMONY-VINE. 



6. DATURA L. Herbs (ours annual) , or shrubs or trees. Leaf -blades 

 undulate or lobed. Flowers solitary in the axils. Calyx tubular, sometimes 

 prismatic, more or less lobed. Corolla white or colored, funnelf orm. Filaments 

 slightly unequal. 



1. D. Stramonium L. Plant green or purple-tinged, 2-12 dm. tall: leaf-blades 

 ovate to oblong, 10-20 em. long, sinuate or laciniate-toothed : calyx 3-5 cm. 

 long; lobes 5-7 mm. long: corolla white, violet, or lavender, 6-10 mm. long: 

 capsules 4-6 cm. long, the prickles equal or the lower ones rather shorter than 

 the upper. [D. Tatula L.] Kather common, in waste places. Nat. of trop. 

 Sum. THORN-APPLE. JIMSON-WEED. JAMESTOWN-WEED. STRAMONIUM. 



7. PETUNIA Juss. Herbs. Leaf -blades entire. Flowers solitary in the 

 axils. Sepals united to below the middle. Corolla white or colored, funnel- 

 form or salverf orm. Filaments unequal, 4 of them didynamous. 



1. P. axillaris (Lam.) B.S.P. Stem and branches rather stout, clammy- 

 pubescent: leaf -blades oblong to ovate-oblong, 3-6 cm. long, those of the lower 

 leaves petioled: calyx 1.5-2 cm. long; lobes mostly oblong: corolla white, 

 almost salverf orm ; limb mostly 4-5 cm. wide. M. Occasional, in waste 

 places. Nat. of Brazil. Sum. 



FAMILY 6. BORAGINACEAE. BORAGE FAMILY. 



Herbs or shrubby plants, the foliage usually bristly pubescent. Leaves 

 alternate: blades mostly entire. Flowers typically perfect, the spikes or 

 racemes often scorpioid. Calyx of 4 or 5 slightly united sepals. Corolla 

 of 4 or 5 partly united petals. Androeciuna of 4 or 5 stamens, the fila- 

 ments partly adnate to the corolla. Gynoecium of 4 nearly distinct 

 carpels, the style arising from between the lobes. Fruit of 4 or fewer 

 nutlets. 



Corolla regular. 



Nutlets armed with barbed prickles. 



Nutlets spreading, covered with prickles. 1. CYNOGLOSSUM. 



Nutlets erect or incurved, with prickles on the back 



or angles. 2. LAPPULA. 



Nutlets unarmed. 



Nutlets attached laterally to the receptacles : free por- 

 tions of the filaments elongate. 3. MERTEXSIA. 

 Nutlets attached to the receptacles by their bases : 



free portions of the filaments very short. 

 Nutlets each with a small flat scar where attached : 



scales in the throat of the corolla broad. 

 Corolla funnelf orm or salverf orm ; lobes obtuse, 



spreading, broad. 

 Racemes without bracts : calyx-lobes about 



as long as the tube. 4. MYOSOTIS. 



Racemes with bracts : calyx-lobes much longer 



than the tube. 

 Corolla slightly longer than the calyx : 



style as long as the ovary or longer. 5. LITHOSPERMUM. 

 Corolla much longer than the calyx : 



style much elongate. 6. BATSCHIA. 



Corolla tubular ; lobes acute or acuminate, 



erect, narrow. 7. OXOSMODIUM. 



Nutlets each with a large hollow scar where at- 

 tached : scales in the throat of the corolla 

 narrow. 



Corolla tubular. 8. STMPHTTUM. 



Corolla rotate. 9. BORAGO. 



Corolla irregular. 10 ECHIUM 



