306 CONVOLVULUS FAMILY. 



11. LYCOFSIS, BUGLOSS. (Greek: wolf and face.) European 

 weed. (D 



L. arvensis, Linn. Field or Small Bugloss. Very rough-bristly 

 weed, about 1° high, in sandy fields E. ; with lance-oblong leaves, and 

 small blue corolla little exceeding the calyx. 



12. ECHITJM, VIPER'S BUGLOSS. (Greek word for viper.) © 



E. vulgare, Linn. Common V. or Blueweed. Cult, from Eu., in old 

 gardens, and a weed in fields, E.; l°-2° high, very rough-bristly, with 

 lanceolate sessile leaves, and showy flowers in racemed clusters, the 

 purple corolla changing to bright blue, in summer. 



LXXIX. CONVOLVULACEjE, convolvulus family. 



Twining, trailing, or rarely erect plants (ours herbs), com- 

 monly -with some milky juice, alternate leaves, no stipules; 

 regular monopetalous flowers with 5 (rarely 4) imbricated 

 sepals, as many separate stamens, corolla convolute or twisted 

 in the bud, a 2— 4-celled ovary (or 1-celled and ovaries several 

 or many in Nolana) and pod with only 1 or 2 ovules erect 

 from the base of each cell, becoming large seeds, containing 

 a curved or coiled conspicuous embryo in some mucilaginous 

 (or, when dry, harder) albumen. 



I. CONVOLVULUS SUBFAMILY proper; with or- 

 dinary foliage, axillary peduncles bearing one or more usually 

 showy flowers, and embryo with broad leaf-like cotyledons 

 folded and crumpled in the seed. (Lessons, Fig. 40-43.) 

 Calyx of 5 separate sepals. 



* Style single and entire; stigmas 1-8. 



1. IPOMCEA. Calyx naked, i.e. not in closed by a pair of leafy bracts. Corolla nearly 



salver-shaped or trum pet-shaped, with a long tube, the border not twisted in the bud. 

 Stamens and style included or protruded. Stigma capitate, 2-8-lobed. Pod 2-4- 

 celled; cells 1-seeded. (Lessons, Figs. 250, 251.) 



2. CONVOLVULUS. Calyx naked or surrounded and inclosed by a pair of large, leafy 



heart-shaped bracts. Corolla open funnel-form or almost bell-shaped. Stamens in- 

 cluded. Stigmas 2, linear. Pod 2-celled ; cells 2-seeded. 

 8. NOLaNA. Calyx 5-cleft, foliaceous. Corolla short and open funnel-form, plaited in the 

 bud. Stamens 5. Style 1 ; stigma capitate or club-shaped. Ovaries 8-40 collected 

 In a circle or heap around the base of the style, becoming 1-4-oelled drupelets or nut- 

 lets, each cell 1-seeded. 



* * Style 2-cleft or 2 separate styles, rarely 8. Spreading or trailing, not twining. 



4. BREWERIA. Like Convolvulus, but the styles 2 or sometimes 8, or in one species 



2-cleft, and stigmas capitate. Peduncles 1-T-flowered. 



5. EVOLVULUS. Corolla short and open funnel-form, or almost wheel-shaped. Styles 



2, each 2-cleft ; the 4 stigmas obtuse. Pod 2-celled ; cells 2-seeded. 



