306 CONVOLVULUS FAMILY. 



11. LYCOPSIS, BUGLOSS. (Greek: irolf and fare.) European 

 weed, (i) 



L. arvinsiSt Linn. Filld or Smam- Bioi.oss. Very rough-bristly 

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

 small blue corolla little exceeding the calyx. 



12. ECHIUM, 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. 



IXXIX. CONVOLVULACEiE, COXVOLAX^LUS FAMILY. 



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

 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 separate sepals. 



* style single and entire ; stigmas 1-3. 



1. IPOMCEA. Calyx naked, i e. not inclosed by a pair of Icafv braes. Corolla nearly 



salver-shaped or trumpet-shaped, witli a lonp tube, the border not twisted in tli.' bud. 

 Stamens and style included or protruded. Stigma capitate, 2-3-lobed. Pod 2-1- 

 c«lled ; cells l-seeded. (Lessons, Fijrs. 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. Caly-x 5-cleft, foliaceous. Corolla short and open funnel-form, plaited in the 

 bud. Stamens 5. Style 1 ; stigma capitate or club-shaped. Ovaries 3^0 collected 

 in a circle or heap around the base of the style, becoming 1-4-celled drui)elets or nut- 

 lets, each cell l-seeded. 

 • • Style 2-cleft or 2 separate styles, rarely H. Spreading or trailing, vot twining. 



4. BREWEllL^. Like Convolvulus, but the styles 2 or sometimes 3, or in one species 



2-cleft. and stigmas capitate. Peduncles 1-7-flowered. 



5. EVOLVX'LUS. Corolla .short and open funnol-f(irni, or almost wheel-shaped. Styles 



2, each 2-clcft ; the 4 stigmas obtuse. Pod 2-celIoil ; cells '.'-seeiU-d. 



