186 



CONTKIBUTIONS FROM THE NATIONAL, HERBARIUM. 



Leaflets broadly ovate or oval, most of them well over 2 cm. wide, glaucous 

 beneath 9, M. laevigata. 



Stems and leaves conspicuously hairy. 



Leaflets densely velvety beneath, the hairs spreading 10. M. viridiflora. 



Leaflets not velvety beneath, the hairs appressed. 

 Joints of the pod triangular, with a conspicuous angle on the lower side; 



pods conspicuously stalked 11. M. dillenii. 



Joints of the pod oval, rounded on the lower side; pods sessile or nearly so. 

 Racemes of flowers dense, with numerous large bracts just before flower- 

 ing; corolla 8-12 mm. long; joints of the pod usually 4-6. 



12. M. canadensis. 



. R acemes very loosely flowered , the bracts very small ; corolla about 5 mm . 



long; joints of the pod usually 2 13. M. rigida. 



1. Meibomia nudiflora (L.) Kuntze. 



Dry woods; frequent. July-Sept. Eastern N. Amer. (Desmodiuvi nudifloruvi 

 DC.) 

 Plants with white flowers are found occasionally. 



2. Meibomia paucifiora (Nutt.) Kuntze. 



A single specimen seen, collected near Pierce's Mill, Sept., 1878, by Ward. Eastern 

 U. S. (Desmodium pauciflorum DC.) 



3. Meibomia grandiflora (Walt.) Kuntze. 



Woods; occasional. June-July. Eastern N. Amer. (Desmodium acuminatum 

 DC; D . grandiflorum DC.) 



4. Meibomia michauxii Vail. 



Dry woods; occasional. Aug. -Sept. Eastern U. S. {Desmodium rotundifolium 

 DC; D. rotundifolium glabratum A. Gray.) 



5. Meibomia ochroleuca (M. A. Cm*tis) Kuntze. 



Mount Hamilton, Oct., 1882 (Ward). N. J. to Ga. and Mo. (Desmodium ochroleu- 

 cum M. A. Curtis.) 



6. Meibomia bracteosa (Michx.) Kuntze. 



Woods along the upper Potomac; occasional. Aug.-Sept. Eastern U. S. (Des- 

 inodium bracteosum Michx.) 



7. Meibomia canescens (L.) Kuntze. 



Thickets along the Potomac and Rock Creek; occasional. July-Sept. Eastern 

 U. S. (Desmx)dium canescens DC) 



8. Meibomia paniculata (L.) Kuntze. 



Woods and thickets; frequent. Aug.-Sept. Eastern U- S. (Desmodium panicu- 

 latum DC.) 



9. Meibomia laevigata (Nutt.) Kuntze. 



Dry woods; occasional. Aug.-Sept. Eastern U. S. (Desmodium laevigatum DC.) 



10. Meibomia viridiflora (L.) Kuntze. 



Woods anS thickets; occasional. Aug.-Sept. Eastern U. S. (Desmodium viridi- 

 florum Beck.) 



11. Meibomia dillenii (Darl.) Kuntze. 



Woods and thickets; common. Aug.-Sept. Eastern U. S. (Desmodixim dillenii 

 Darl.) 



12. Meibomia canadensis (L.) Kuntze. 



Low ground along the Potomac below Washington. Aug.-Sept. Eastern N. Amer. 

 (Desmodium canadense DC.) 



13. Meibomia rigida (Ell.) Kuntze. 



Dry soil; rare. Aug.-Sept. Eastern U. S. (Desmodium rigidum DC.) 



