AoKiMo.MA. HOSACK/K. .l.jl 



12-15, inserted with llie petals into the glandular ring in tlio tliroat of the 

 calyx. Ovaries 2 : style terminal. Aehenia included in the indurated tube 

 of the calyx. Seed suspended. — Perennial herbs, with pinnate leaves, and 

 yellow flowers in slender spicatc racemes. IJracts 3-clefl: ])editels 2-lirac- 

 teolate. — Agrimomj. 



-f~ 1. A. Eiq)a((ma (Linn.) : stem and jjelioles liirsule ; leaves interruptedly 

 ' pinnate: leatleLs oblong-obovate, 5-7, wiili minute ones intermixed, coarsely 

 toothed, hirsute-pubescent or nearly glalirous beneath ; sli|>ules with a few 

 coarse teeth ; calyx sulcate towards the base ; petals twice tlie length of the 

 calyx.— Fwrs/i / //. \. p. 335; Engl. hof. /. 1335 ; Torr.! fi. 1. 7?. 473,• 

 Z)C..' /. c; Honk.! J!. Bor.-Am. I. p. 19G. 



fi. hirsuta (Torr. 1. c.) : smaller and more hairy. 



y. wollis : up})er part of the stem, petioles, and lower surface of the leaves 

 clothed with a dense and soft ajipressed ])ubescence. 



6. parviftora : smoother ; racemes more slender, with the flowers rather 

 remote. — Hoolc. I. c. (excl. syn.) A. striata, Michx.! ft. 1. p. 287. A. 

 parviflora, DC. ! I. c. 



Borders of woods, Canada ! to Georgia ! Kentucky ! and Louisiana ! 

 y. Red River, Dr. Pitcher! .Tidy. — Stem 2-4 feet high. Spikes virgate. 

 Flowers variable in size, rather distant in fruit. — Thepetals in Michaux's 

 specimen of A. striata are not white, as he has stated tliem to be, but 

 yellow. 



. ' 2. A. parviflora (Ait.) : stem and petioles ver}^ hirsute with brownish 

 spreading hairs; leaves interruptedly ])innate ; leaflets numerous (11-19), 

 crowded, with smaller ones intermixed, lanceolate, acute, deepl}^ serrate- 

 incised with numerous and regular teeth, scabrous above, pid)escent beneath ; 

 stipules acutely incised : ?-;ieemes virgate ; flowers small. — Ait. ! Keu\ (ed. 

 1.) 2. p. 130 ;' Pursh ! ft. 1. p. 336. A. suaveolens, Pursh! I. c. ; Ell. sk. 

 1. p. 636 (ex descr.) A. Eu])atoria, Michx. ! ft. 1. p. 287 (chiefly). 



Woods and dry meadows, Pennsylvania to Virginia ! and the upper dis- 

 tricts of S. Carolina ! and Georgia ! west to Kentucky ! and Tennessee. 

 July-Aug. — Stem 4-5 feet high. Leaflets 2-3 inches long, narrow, often 

 nearly linear, serrate with 10-12 deep acute teeth on each side. Racemes 

 many-flowered : pedicels distinct, longer than the bracts. Petals small, 

 pale yellow. — The resinous dots, whicli are to be found on the lower surface 

 of the leaves in nearly all the species, are in this particularly abundant 

 throughout, among tiie hairs, rendering the plant somewhat viscous, and 

 giving it an agreeable balsamic scent. In foliage it somewhat resembles 

 A. repens ; but the leaflets are still narrower, the flowers about half the 

 size, and the bracts inconspicuous ; the raceme loose, &c. 



3. A. incisa : stem and petioles clothed with a soft ajipressed pubescence, 

 and liirsute spreading hairs intermixed ; leaves inteniptedly pinnate ; leaf- 

 lets 3-5 pairs, with smaller ones interj)Osed, oblong, short, deeply incised 

 with 3-6 spreading unequal teeth on each side, nearly glabrous above, can- 

 escently hairy beneath ; stipules deeply cleft ; racemes Virgate ; die flowers 

 small and remote, on veTy short pedicels. 



N. Carolina? Georgia, Le Conte ! Alabama, Dr. Gates ! Tampa Bav, 

 V\or'u\ii, Dr. Bvrroics ! — This seems to be a very distinct species, and to 

 prevail in the southern Atlantic States; while the preceding prefers the 

 mountains, and has a more western range. The flowers are rather larger 

 than in A. parviflora ; the lobes of the calyx very short ; the leaflets not 

 half the length of that species, incisely puinatifid. A fragment exists in 

 Michaux's herbarium, confounded with his A. Eupatoria. 



