ORDER 90. BORRAGEWORTH. 275 



flowers seldom yellow, generally in a coiled (circinate) inflorescence 

 zepals 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-lcbed, but separating when ripe ir to several achenia. . . .a 

 5 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 

 8 Achenia and ovary not prickly ... .4 



4 Corolla throat closed by 5 scales. . . .c 

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



<i Corolla tube with open throat. Achenia 4. Heliotrope. Turnsol. HELIOTRO'PIITII. 1 

 a Corolla tube with constricted throat. Achenia 2. False Ilelio. HELIOTUOPH'TTUM. 

 b Corolla irregularly 5-lobed. Throat open. Blue. Viper's Bugloss. ECH'IUM. 

 b Corolla with the slender tube bent, closed. Blue. Buqluss. LTCOP'SIS. 

 c Corolla wheel-form, anthers exserted. Blue. Borrage. BORRA/OO. 



c Corolla tubular bell-form. Style exserted. White. Comfrey. SYM'PHYTDM. 

 a uor. tubular, with erect, acute lobes. White. False Gromwdl. ONOSMO'DIUM. 

 d Corolla lobes rounded, spreading, ... .e 



e and imbricated in the bud. White or yellow. Gromwdl. LITHOSPER'MUM. 2 



e and imbricated in the bud. Purple or blue, large. MERTEN'SIA. 3 



e and convolute in the bud. Blue or white, small. MTOSO'TIS. 4 



f Corolla salver-form. Ach. prickly on the edge. Burr-seed. EOHINOSPEP/MUM. 



f Corolla funnel-form. Achenia prickly all over. BouncCs-tongue. CYNOGLOS'SUM. 5 



1. HELIOTRO'PIUM. Turnsol. 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. Europie'um. Wild II. Herb downy. Leaves oval, obt-ase. Spikes single or 



forked. White. S. "[oMuse. Blue. W. 



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

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

 tered, w.- -p. f 



2. LITHOSPER'MUM. Gromwell or Grammell. 



Calyx 5-parted. Corolla funnel-form or salver-forrn, the limb 5-lobed, 

 ;hroat open, naked or with 5 projections. Stamens included. Achenia 



