Ordee 90.— BOBRAGEWORTS. 261 



flowers seldom yello-w-, generally in a coiled (oircinate) inflorescence • 

 sepah 5 ; petah 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 into several acbenia. . . .a 



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



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



2 Corolla perfectly regular 3 



S Aohenia or ovary prickly. Corolla throat closed with 5 scales f 



8 Aohenia and ovary not prickly 4 



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

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

 a Corolla tube with open throat. Aohenia 4. Heliotrope. Tamsol. Hbliotbo'pium. 1 

 a Corolla tube with constricted throat. Achenia2. Jfe&e ZfeZio. Heliotkoph'ttdm. 

 b Corolla irregularly 5-lobed. Throat open. Blue. Viper's Bughss. Eoh'ium, 

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



Corolla wheel-form, anthers exserted. Blue. Barrage. Bobba'qo. 

 c Corolla tubular bell-form. Style exserted. White. Comfrey, Sym'phttom. 



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. GromweU. Lithospbb'mdji. 2 

 e and imbricated in the bud. Purple or blue, large. MESTBsr'siA. 8 



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



1 Corolla salver-form. Ach. prickly on the edge. Burr-seed. Eohinospbe'mdm. 



f CbroUa funnel-form. Achenia prickly all over. Hound? s-tongue. Cymoqlob'stjm. 5 



1. HELIOTRO'PIUM. Turnsol. HeUotrope. 



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

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

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



1 H. Europse'iim. Wild S. Herb downy. Leaves oval, obtuse. Spikes single or 



forked. White. S. [obtuse. Blue. W. 



2 H. cnrassav'icum, Glamcous HI Herb smooth, glaucous. Lvs. linear-lanceolate, 



3 H. Pemvia'num. Comnum H. Shrubby, whitish-downy. Spikes many, clus- 



tered, w.-p. t 



2. LITHOSPEE'MUM. GromweU or Grammell. 



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

 throat open, naked or with 5 projections. Stamens included. Achenia 



