Order 90.— BORRAOEWORTS. 201 



jtoijcers seldom yellow, generally in a coiled (circinate) inflorescence • 

 sepals 5 ; petals 5, united below, almost always regular; 

 stamens 5; ovary deeply 4-lobed, forming in fruit 4 separate, 1-seeded 

 nuts or nutlets, generally without albumen. 



Analysis of the Genera. 



§ Ovary not 4-lobed, but separating when ripe irto several aclicnia a 



§ Ovary 4-lobed or parted, becoming 4 achenia around the style. . . .2 



2 Corolla irregular, with unequal lobes or a bent tube b 



2 Corolla perfectly regular 3 



3 Achenia or ovary prickly. Corolla throat closed with 5 scales. . . .f 



3 Achenia and ovary not prickly 4 



4 Corolla throat closed by 5 scales c 



4 Corolla throat open, no scales, sometimes 5 ridges d 



a Corolla tube with open throat. Achenia 4. lldiotrope. T'M/'nsoZ. IIeliotro'i'ium. 1 



a Corolla tube with constricted throat. Achenia 2. False Helio. nKLioTiiopu''YTUM. 



b Corolla irregularly 5-lobed. Tliroatopen. Blue. Viper'' s Bugloss.'E.ow'w:-^. 



b Corolla with the slender tube bent, closed. Blue. Bughss. Lycop'sis. 



c Corolla wheel-form, anthers exserted. '"Blue, Barrage. Borra'go. 



c Corolla tubular bell-form. Style exserted. White. Comfrey. Sym^phytum, 



d Cor. tubular, with erect, acute lobes. White. False Gromwell. Onosmo'dium. 



d Corolla lobes rounded, spreading, e 



e and imbricated in the bud. White or yellow. Gromwell. LiTiiosPER'iiuM. 2 



e and imbricated in the bud. Purple or blue, large. Merten'sia. 3 



e and convolute in the bud. Blue or white, small. Myoso'tis. 4 



f Corolla salver-form. Ach. prickly on the edge. Burr-seed. Eciiinosper'mum. 



f Corolla funnel-form. Achenia prickly all over, nound's-tongue. Cynoglos'sum. 5 



1. IIELIOTROTIUM. Turusol. Heliotrope. 



Corolla salver-form, lobes shorter than the tube. Anthers sessile. Style 

 short, terminal. Ovary entire, splitting at length into 4 achenia. — Herbs 

 or shrubs. Flowers in one-sided, coiled spikes. 



1 H. Europae'um. Wild IT. Herb downy. Leaves oval, obtuse. Spikes single or 



forked. Wliite. S. [obtuse. Blue. W. 



2 H. curassav'icum. Glaucous IF. Herb smooth, glaucous. Lvs. linear-lanceolate, 



3 H. Peruvia'num. Common JJ. Shrubby, whitish-downy. Spikes many, clus- 



tered, w.-p. t 



2. LITIIOSPER'MUM. Gromwell or Grammell. 



Calyx 5-parted. Corolla fiumel-form or salver-form, tlie limb 5-lobed, 

 throat open, naked or with ."> itiojections. Stamens included. Achenia 



