VOL. II.] 



PEA FAMILY. 



315 



4. Meibomia arenicola Vail. Sand 

 Tick- trefoil. (Fig. 2173.) 



Hedysarum lineatum Michx. Fl. Bor. Am. 2: 72. 



1803. Not L. 1759. 



Desmodium lineatum DC. Prodr. 2: 330. 1825. 

 Meibomia arenicola Vail, Bull. Torr. Club, 23: 140. 



1806. 



Decumbent or prostrate, pubescent or gla- 

 brate, slender, i-2 long. Stipules subulate, 

 persistent; petioles about % f long; leaflets 

 ovate-orbicular, ^ / -i / long, glabrous or nearly 

 so, coriaceous, reticulate- veined ; racemes 

 terminal and axillary, elongated, usually pu- 

 bescent ; flowers purple, about 2 // -3 // long ; 

 pedicels slender; loment small, 2-4-jointed, the 

 joints uncinate-pubescent, less convex above 

 than below, i^ // -2^ // long; stipe about 

 equalling the calyx-lobes. 



In dry woods, Maryland to Florida, west to 

 Louisiana. July-Sept. 



5. Meibomia Michauxii Vail. 

 Prostrate Tick-trefoil. (Fig. 2174.) 



Hedysarum rolundifolium Michx. Fl. Bor. Am. 



2: 72. 1803. Not Vahl. 1791. 

 Desmodium rotundifolium DC. Prodr. 2: 330. 



1825. 

 Meibomia rolundifolia Kuntze, Rev. Gen. PI. 



197. 1891. 

 M. Michauxii Vail, Bull.Torr.Club, 23: 140. 1896. 



Prostrate, 2-6 long, softly pubescent, or 

 densely villous. Stipules ovate or triangular- 

 ovate, persistent, acuminate, somewhat cor- 

 date, striate, ciliate; leaves petioled; leaflets 

 nearly orbicular, pubescent, i / -2^ / long; pan- 

 icles terminal and axillary, loose; bracts decid- 

 uous; flowers purple, $"-$" long; calyx-lobes 

 ciliate; loment i' long or more, 3~5-jointed; 

 joints obliquely rhomboid below, slightly con- 

 vex above, uncinate-pubescent; stipe equal- 

 ling or longer than the calyx-lobes. 



Dry woods, Maine and Ontario to Minnesota, 

 south to Florida and Louisiana. July-Sept. 



6. Meibomia ochroleuca (M. A. Curtis) 



Kuntze. Cream-flowered Tick-trefoil. 



(Fig. 2175.) 



Desmodium ochroleucum M. A. Curtis; Canby, Proc. 



Acad. Phil. 1864: 17. 1864. 

 Meibomia ochroleuca Kuntze, Rev. Gen. PI. 198. 1891. 



Procumbent or decumbent, hirsute, i-3 long. 

 Stipules ovate, persistent, cordate, striate; petioles 

 %'-i%' long; leaflets yellowish green, rugose or 

 nearly smooth above, reticulate-veined and some- 

 what scabrous beneath, 8 // -2 / long, the terminal 

 one rhomboid, the lateral obliquely ovate, smaller, 

 or sometimes wanting; racemes terminal and axil- 

 lary, simple; bracts deciduous; flowers whitish; 

 upper calyx-lobe minutely 2-toothed, the others at- 

 tenuate; loment 2-3-jointed, the joints only slightly 

 more convex below than above, twisted, oval, pale 

 green, glabrous except the uncinate-pubescent 

 sutures; stipe about as long as the calyx-lobes. 



In woodlands, New Jersey to Georgia; also in Ten- 

 nessee and Stoddard Co., Mo. Aug. -Sept. 



