214 American Midland Naturalist MoNOGRAprf No. 2 



1. Stem hispidulous; plant perennial; lower leaves oval; inflorescence few- 

 flowered, leafless; corolla blue; woods, s. 111. May. Wild Comfrey 



C. virgmianum L. 



3. Lappula Moench — Stickseed 

 (Hacl(elia Opiz) 



1. Basal leaves ovate or cordate; flowers white; fruit globose, the nutlets prick- 

 ly all over the back; woods and thickets throughout III. July-Sept 



L. virginiana (L.) Greene 



1. Basal leaves spatulate; flowers blue; fruit pyramidal, the nutlets prickly only 



along the margins; waste places; nat. from Eur. June-July 



L. echinata Gilib. 



4. Mertensia Roth 

 M. virginica (L.) Link. Bluebells. Woods, common. Apr. -May. 



5. Myosotis L. — Forget-me-not 

 1. Calyx strigose. 



2. Corolla 6-9 mm. broad; calyx-lobes shorter than the tube; wet ground, 



occasional; escaped from cult.; introd. from Eur. May-Sept 



M. scorpioides L. 



2. Corolla 3-5 mm. broad; calyx-lobes about equalling the tube; n.w. Ind., 



but no 111. specimens seen M. laxa Lehm. 



1 . Calyx-tube with uncinate or glandular pubescence, at least toward the base; 

 corolla 2-3 mm. broad. 



3. Fruiting pedicels longer than the calyx; reported from Cook Co. by 



Pepoon M. arvensis (L.) Hill 



3. Fruiting pedicels not longer than the calyx. 



4. Calyx-lobes equal; corolla blue; nutlets about 1 mm. long; waste places, 



occasional; nat. from Eur -M. micrantha Pall. 



4. Calyx-lobes unequal; corolla white. 



5. Fruiting calyx 4-5 mm. long, bearing few hooked hairs; nutlets about 

 1.5 mm. long; stem 5-30 cm. tall; sandy soil in open woods and 

 fields. May-July. [M. virginica of auth., doubtfully Lycopsis vir- 

 ginica L.} M. verna Nutt. 



5. Fruiting calyx 5-7 mm. long, with many hooked hairs; nutlets 2-2.5 

 mm. long; stem 30-50 cm. tall; rich soil in woods, s. 111., not 

 common. May-June M. macrosperma Engelm. 



6. Lithospermum L. — Gromwell 



1. Perennials; corolla yellow; nutlets white, smooth, glossy. 

 2. Corolla greenish yellow, 4-5 mm. long. 



3. Leaves lanceolate, acute; nutlets ovoid, 3 mm. long; corolla longer than 



the calyx; waste ground, occasional; nat. from Eur. May-Aug 



L. officinale L. 



3. Leaves ovate, acuminate; nutlets globose-ovoid, 4 mm. long; corolla 



shorter than the calyx; dry soil. May-June L. latifo'inni Michx. 



2. Corolla bright yellow or orange, 1-2 cm. long. 



