108 
little understood, and a more extensive exploration of Arizona, 
Texas and New Mexico will doubtless reveal new or Mexican — 
species within our borders, and perhaps change the status of some 
here recognized. 
My thanks are due to Dr. N. L. Britton for his help and 
many valuable suggestions, and also to Captain John Donnell 
Smith, Mr. Redfield, Dr. Sereno Watson and Prof. Macoun for 
their kindness in loaning their collections to me for examination. 
§ 1. Pods constricted into separate semi-rhomboidal joints. 
+ Pod not constricted above, deeply constricted below, long-stiped ; 
leaflets broad. 
* Panicle arising from the base of the plant. 
1. MEIBOMIA NUDIFLORA, (L.) 
Hedysarum nudiflorum, L. Spec. Pl. 749 (1753). 
Desmodium nudiflorum, DC. Prodr. ii. 330 (1825). 
Meibomia nudiflora, O. Kuntze, Rev. Gen. Plant. i. 197 (1891): 
Distr.— Ontario to Florida, west to Missouri and Louisiana. 
** Panicle arising from the summit of the plant, leaves crowded at its base. 
2. MEIBOMIA GRANDIFLORA (Walter). 
Hedysarum grandiflorum, Walter, F). Car. 185 (1788). er 
Hedysarum glutinosum, Mil. in Willd. Spec. iii. 1198 (1803). 
Hedysarum acuminatum, Michx. F\. Bor. Am. ii. 72 (1803). 
Desmodium acuminatum, DC. Prodr. ii, 329 (1825). 
Desmodium Srandifiorum, DC. Prodr. ii. 338 (1825). 
Metbomia grandiftora,O. Kuntze, Rev. Gen. Plant. i. 196 (1891): 
Distr.—Ontario to Florida, west to Minnesota, Nebraska and 
Texas. : 
*** Panicle terminal, leaves scattered. 
3. MEIBOMIA PAUCIFLORA, (Nutt.) 
Hedysarum pauciflorum, Nuttall, Gen. ii. 109 (1818). 
Desmodium pauctflorum, DC. Prodr. ii. 330 (1825). 
Meibomia pauciflora, O. Kuntze, Rev. Gen. Pl. i. 198 (1891): 
Distr.—New York to Florida, west to Missouri and Louisiana. 
+ Pod slightly constricted above, much constricted below, joints rhomboidal 
or semi-rhomboidal, 
} Trailing or reclining vines, 
* Leaflets orbicular or nearly so (except in AV. /ineata, var. polymorp 
| Leaflets 1’ or less long, racemes simple, elongated, leafless. 
4. MEIBOMIA LINEATA, (Michx.) ' 
Hedysarum lineatum, Michx. F. Bor. Am. ii 72 (1803). 
