PA PI LION A CEA E. 5 6 1 



(I. F. f. 2177.) Erect, 6-12 dm. high, uncinate-pube scent. Stipules small, de- 

 ciduous; leaflets obtuse at each end, nearly glabrous above, reticulate-veined and 

 pubescent beneath, 2-8 cm. long; flowers 4-6 mm. long; loment 1-3 -jointed, the 

 joints about 4 mm. long, obliquely obovate, hispid, somewhat twisted, less convex 

 above than below ; stipe not exceeding the calyx-lobes. In dry soil, Mass., R. I. 

 and Conn, to Mich., Ky., Ark. and Tex. July-Sept. 



9. Meibomia stricta (Pursh) Kuntze. Stiff Tick-trefoil. (I. F. f. 2178.) 

 Erect, slender, finely pubescent, 6-12 dm. high. Stipules subulate, deciduous; 

 leaves petioled; leaflets obtuse, glabrous, thick, reticulate-veined, 2.5-6 cm. long, 

 about 6 mm. wide; flowers 2-4 mm. long; loment small, 1-3 -jointed; joints semi- 

 olx>vate or semi-rhomboid, uncinate-pubescent, about 4 mm. long; stipe about equal- 

 ling the calyx-lobes. Pine barrens of N. J. to Fla., west to La. July-Sept. 



10. Meibomia canescens (L.) Kuntze. Hoary Tick-trefoil. (I. F. f. 

 2179.) Erect, densely pubescent, 1-1.7 m. high. Stipules ovate, acuminate, 

 somewhat cordate, persistent; leaflets ovate, 1. 5-10 cm. long, scabrous above, pu- 

 bescent beneath, ciliate, the terminal one commonly rhomboid and larger than 

 the lateral ones; racemes compound; flowers 4-5 mm. long; loment 4-6-jointed, 

 joints longer than wide, unequally rhomboid, 9-13 mm. long; stipe about equalling 

 the upper lobe of the calyx. In rich soil, Ont. to Mass., Fla., Minn, and Tex. 

 July-Sept. 



Meibomia canescens hirsuta (Hook. ) Vail. Stem and branches more densely 

 villous-pubescent ; leaflets narrower. Mo. 



11. Meibomia longifolia (T. & &.) Vail. Long-leaved Tick-trefoil. 

 (I. F. f. 2180.) Erect, 6-15 dm. high, the angled stems and panicle minutely pu- 

 bescent. Stipules lanceolate-setaceous; leaflets 5-12 cm. long, lanceolate-ovate or 

 ovate, scabrate above, lighter, appressed-pubescent or villous beneath; flowers 

 showy, purple; loment 2.5-8 cm. long, 4-6-jointed, the joints triangular-oblong or 

 lozenge-shaped, unicinate-pubescent throughout; stipe about the length of the 

 calyx-lobes. In rich soil and low woods. 111. to La. and Ala. June-Sept. 



12. Meibomia bractedsa (Michx.) Kuntze. Large-bracted Tick-trefoil. 

 (I. F. f. 2181.) Erect, 9-18 dm. high, glabrous or nearly so below, the panicle 

 finely pubescent. Stipules lanceolate, cuspidate, somewhat cordate; leaflets 

 5-20 cm. long, ovate or ovate-lanceolate; flowers purple, 9-1 1 mm. long; bracts 

 cuspidate, striate, deciduous; loment 2.5-8 cm. long. 3-7-jointed, the joints ob- 

 liquely oblong, about twice as long as wide, uncinate-pubescent; stipe about the 

 length of the lower calyx lobes. In thickets, Me. to Ont., Fla., Mo. and Tex. 

 Aug. -Sept. 



13. Meibomia paniculata (L.) Kuntze. Panicled Tick-trefoil. (I. F. f. 

 2182.) Erect, slender, 6-12 dm. high. Stipules small, subulate; leaflets oblong- 

 lanceolate or linear-lanceolate, obtuse, 2.5-5 cm - l° n g; racemes compound; flowers 

 purple, 6-9 mm. long ; loment 2.5 cm. long or more, 4-6 jointed, the joints ob- 

 liquely triangular or rhomboid, minutely uncinate-pubescent; stipe nearly equal- 

 ling the lower lobes of the calyx. In dry soil, Ont. to Minn., Mass., Fla. and Tex. 

 July-Sept. 



Meibomiapaniculata Chapmanf Britton. More slender; leaflets linear. Intermediate 

 forms also occur. In dry, sandy soil, Va. to Fla., Ky. and Tex. 



Meibomia paniculata pubens (T. & G.) Vail. Stems puberulent ; leaflets coriaceous 

 when old, oblong-lanceolate, sometimes scabrous above, pubescent beneath ; loment- 

 joints strongly angled on the back. In sandy soil, Va. to Fla., the Ind. Terr, and Tex. 



14. Meibomia laevigata (Xutt.) Kuntze. Smooth Tick-trefoil. (I. F. f. 

 2183.) Stem terete, glaucous, erect or ascending. 6-12 dm. high, glabrous; stipules 

 subulate, deciduous; petioles 2.5-5 cm. long, leaflets ovate, acutish. the terminal 

 one more or less rhomboid; racemes compound, slightly putrescent; bracts decid- 

 uous; calyx scabrous; flowers pink, n-13 mm. long; loment 3-4-jointed, the 

 joints triangular, angled on the back, uncinate-pubescent; stipe 4-6 mm. long. 

 In dry woods, S. N. V. to Fla., Mo. and Tex. Aug. -Sept. 



15. Meibomia rhombifMia (Ell.) Vail. Rhomb-leaved Tick-trefoil. 

 (I. F. f. 2184.) Erect or ascending. 6-0 dm. high or more, uncinate pubescent. 

 Stipules subulate, taper-pointe ovate, often mucronulate, scabrous above, 

 villous and reticulated beneath, 5-9 cm. long, the terminal rhomboid, the lateral 



